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WO2014067345A1 - 卫星定位方法、装置及系统 - Google Patents

卫星定位方法、装置及系统 Download PDF

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Publication number
WO2014067345A1
WO2014067345A1 PCT/CN2013/083015 CN2013083015W WO2014067345A1 WO 2014067345 A1 WO2014067345 A1 WO 2014067345A1 CN 2013083015 W CN2013083015 W CN 2013083015W WO 2014067345 A1 WO2014067345 A1 WO 2014067345A1
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WO
WIPO (PCT)
Prior art keywords
satellite data
location
satellite
terminal
sharing center
Prior art date
Application number
PCT/CN2013/083015
Other languages
English (en)
French (fr)
Inventor
魏向林
黄小燕
王渡华
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2014067345A1 publication Critical patent/WO2014067345A1/zh

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/03Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers
    • G01S19/07Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers providing data for correcting measured positioning data, e.g. DGPS [differential GPS] or ionosphere corrections
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/38Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
    • G01S19/39Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/40Correcting position, velocity or attitude
    • G01S19/41Differential correction, e.g. DGPS [differential GPS]
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/03Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers
    • G01S19/05Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers providing aiding data
    • G01S19/06Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers providing aiding data employing an initial estimate of the location of the receiver as aiding data or in generating aiding data
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/38Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
    • G01S19/39Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/42Determining position
    • G01S19/45Determining position by combining measurements of signals from the satellite radio beacon positioning system with a supplementary measurement
    • G01S19/46Determining position by combining measurements of signals from the satellite radio beacon positioning system with a supplementary measurement the supplementary measurement being of a radio-wave signal type

Definitions

  • a location based service refers to a value-added service in which a mobile network acquires location information of a mobile terminal through a specific positioning technology, thereby providing an additional service for the terminal user, and can be widely applied to emergency rescue.
  • mobile positioning technology has received more and more attention, especially the growing maturity of 3G and 4G technologies has provided support for the development of mobile positioning technology.
  • A-GPS Assisted Global Positioning System
  • GPS Global Positioning System
  • the advantage of this technology is mainly in its positioning accuracy. It can reach 5 ⁇ 10m in normal working environment in outdoor and other open areas. It is the positioning technology with the highest positioning accuracy.
  • using the auxiliary information transmitted from the network can enhance the Time To First Fix (TTFF), and the time for capturing the GPS signal for the first time is greatly reduced, generally only a few seconds, unlike the global positioning system.
  • the first capture time Global Position System, GPS for short
  • the first capture time may take 2 to 3 minutes (min).
  • the A-GPS positioning response time is between 3 and 10 seconds (s).
  • A-GPS obtains the location information of the mobile terminal through the mobile terminal and the GPS-assisted positioning information, so it is necessary to add an A-GPS receiver module (or an external A-GPS receiver) in the mobile terminal. ), at the same time to build a location server on the network, reference receivers and other equipment.
  • the positioning procedure of A-GPS is as follows: (1) The mobile terminal first transmits its own base station address to the location server through the network.
  • the location server transmits satellite auxiliary data related to the location according to the approximate location of the terminal, for example: GPS ephemeris.
  • the terminal's A-GPS module can quickly capture the satellite to improve the first lock time (ie, TTFF) capability of the GPS signal, and receive the GPS original signal. After demodulating the signal, the terminal is calculated.
  • the pseudorange of the satellite where the pseudorange is the distance affected by various GPS errors.
  • the terminal completes the calculation of the precise position based on the measured GPS pseudorange and GPS satellite auxiliary information.
  • the reference receiver obtains reference data (e.g., clock, ephemeris, available constellation, reference location, etc.) from the satellite in real time, and provides it to the location server over the network.
  • the location server provides A-GPS assistance data to the terminal through the wireless network to enhance its TTTF, thereby greatly improving the sensitivity of the A-GPS receiving module.
  • the shortcomings of the current practical application of AGPS services are as follows: 1. The problem of reference receiver distribution, because the number of reference receivers is small and unevenly distributed, this will result in inaccurate and accurate data, and thus the positioning speed is slow.
  • the construction of the reference receiver itself requires large-scale capital investment, or lease. In view of the low accuracy of data and the large construction investment in the AGPS service in the related art, no effective solution has been proposed yet.
  • the present invention provides a satellite positioning solution to solve at least the above problems, in view of the problem that the data in the AGPS service is low in accuracy and the construction investment is large.
  • a satellite positioning method including: a terminal transmitting its own location-related information to a satellite data sharing center on a network side, where the satellite data sharing center is used to share the received Satellite data; the terminal receives satellite data from a location corresponding to the location related information of the satellite data sharing center; the terminal performs satellite positioning according to the satellite data, and acquires an accurate location of the terminal and the The updated satellite data corresponding to the precise location; the terminal transmitting the precise location and the updated satellite data corresponding to the precise location to the satellite data sharing center.
  • the terminal performs normal GPS satellite positioning, and acquires an accurate location of the terminal and a satellite corresponding to the precise location.
  • Data the terminal transmits the precise location and satellite data corresponding to the precise location to the satellite data sharing center.
  • the satellite data comprises at least one of the following: GPS capture auxiliary information, GPS positioning auxiliary information, GPS sensitivity auxiliary information, GPS satellite working status information, GPS almanac and correction data, GPS ephemeris, GPS navigation message.
  • the location related information includes at least one of: a base station identifier of the terminal, a WiFi hotspot information of the terminal, a MAC address of the terminal, and an RFID of the terminal.
  • a satellite positioning method including: receiving, by a satellite data sharing center on a network side, a precise location sent by a plurality of terminals and satellite data corresponding to the precise location, where a satellite data sharing center for sharing received satellite data; the satellite data sharing center receiving location related information from the terminal; the satellite data sharing center querying a satellite corresponding to the location related information according to the location related information Data, and transmitting the satellite data to a sender terminal corresponding to the location related information.
  • the method further includes: the satellite data sharing center to send the received multiple terminals
  • the precise location and the satellite data corresponding to the precise location are written to the shared database.
  • a satellite positioning apparatus which is located in a terminal, and includes: a first sending module, configured to send its location related information to a satellite data sharing center on a network side, where The satellite data sharing center is configured to share the received satellite data; the first receiving module is configured to receive satellite data from a position corresponding to the position related information of the satellite data sharing center; and the satellite positioning module is set according to the The satellite data is used for satellite positioning, and acquires the precise location of the terminal and the updated satellite data corresponding to the precise location; the second sending module is configured to set the precise location and the updated satellite data corresponding to the precise location Sent to the satellite data sharing center.
  • the satellite positioning module is further configured to perform normal GPS satellite positioning, and acquire the precise location of the terminal.
  • the second sending module is further configured to send the precise location and the satellite data corresponding to the precise location to the satellite data sharing center.
  • a satellite positioning apparatus is provided.
  • the satellite data sharing center located on the network side includes: a second receiving module, configured to receive an accurate position sent by the multiple terminals and the precise The satellite data corresponding to the location, wherein the satellite data sharing center is used to share the received satellite data; the third receiving module is configured to receive location related information from the terminal; and the third sending module is configured to be related according to the location The information queries the satellite data of the location corresponding to the location related information, and sends the satellite data to the sender terminal corresponding to the location related information.
  • the device further includes: a writing module, configured to write the received precise location of the plurality of terminals and the satellite data corresponding to the precise location into a shared database.
  • a satellite positioning system including the above-mentioned satellite positioning device located in a terminal, and further comprising the above-mentioned satellite positioning device located at a satellite data sharing center on the network side.
  • the terminal transmits its own location related information to the satellite data sharing center on the network side, wherein the satellite data sharing center is used to share the received satellite data; the terminal receives the above location from the satellite data sharing center.
  • Corresponding information corresponds to the satellite data of the location; the terminal performs satellite positioning according to the satellite data, and acquires the precise location of the terminal and the updated satellite data corresponding to the precise location; the terminal sends the precise location and the updated satellite data corresponding to the precise location.
  • FIG. 1 is a flow chart of a satellite positioning method according to an embodiment of the present invention
  • FIG. 2 is a structural block diagram of a satellite positioning apparatus according to an embodiment of the present invention
  • FIG. 3 is another satellite according to an embodiment of the present invention.
  • FIG. 4 is a block diagram showing the structure of another satellite positioning apparatus according to an embodiment of the present invention.
  • FIG. 5 is a block diagram showing a preferred structure of another satellite positioning apparatus according to an embodiment of the present invention
  • FIG. 7 is a block diagram of a satellite data transmission architecture in accordance with a preferred embodiment of the present invention
  • FIG. 8 is a flow chart showing a process of transmitting satellite data in a handset in accordance with a preferred embodiment of the present invention.
  • Step S102 the terminal sets its own location.
  • the related information is sent to the satellite data sharing center on the network side, wherein the satellite data sharing center is used to share the received satellite data; and in step S104, the terminal receives the satellite data corresponding to the location-related information from the satellite data sharing center;
  • S106 The terminal performs satellite positioning according to the satellite data, and acquires an accurate location of the terminal and updated satellite data corresponding to the precise location.
  • Step S108 the terminal sends the precise location and the updated satellite data corresponding to the precise location to the satellite data. Sharing center.
  • the terminal acquires corresponding satellite data from the satellite data sharing center according to its own position related information, performs satellite positioning according to the satellite data, and obtains its own precise position and corresponding update after successful positioning.
  • the satellite data is sent to the satellite data sharing center, and the reference satellite receiver is not needed to be built.
  • the data collected by the user terminal is shared by the satellite data sharing center on the network side, and the fast satellite positioning of the terminal can be realized, and due to the large number of terminals,
  • the distribution range is wide, which solves the problem that the data in the AGPS service in the related technology has low accuracy and large construction investment, enhances the TTTF of the positioning service, improves the positioning service precision, and reduces the construction cost.
  • the terminal may send the precise location and the satellite data corresponding to the precise location to the satellite data sharing center, so that other terminals in the vicinity of the terminal Use this information for fast satellite positioning.
  • the satellite data may include: GPS capture auxiliary information, GPS positioning auxiliary information, GPS sensitivity auxiliary information, GPS satellite working status information, GPS almanac and correction data, GPS ephemeris, GPS navigation message, and the like.
  • the location-related information sent by the terminal to the satellite data sharing center may be the base station identifier (Cell ID) of the terminal, or may be the wireless fidelity (Wireless Fidelity for short) hotspot information of the terminal. Or, it may be a Media Access Control (MAC) address, a Radio Frequency ID (RFID), or the like, and other location-related device information that reflects the location of the terminal. In this way, the flexibility of the use of the solution is improved.
  • a satellite positioning device is provided, which is located in the terminal, and is configured to implement the above-described embodiments and preferred embodiments, and has not been described again.
  • module may implement a combination of software and/or hardware of a predetermined function.
  • the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and conceivable.
  • 2 is a structural block diagram of a satellite positioning apparatus according to an embodiment of the present invention. As shown in FIG. 2, the apparatus includes: a first transmitting module 22, a first receiving module 24, a satellite positioning module 26, and a second transmitting module 28, Detailed description of each module.
  • the first sending module 22 is configured to send its own location related information to the satellite data sharing center on the network side, wherein the satellite data sharing center is configured to share the received satellite data; the first receiving module 24, and the first sending The module 22 is connected to be configured to receive satellite data from a location corresponding to the location related information of the satellite data sharing center.
  • the satellite positioning module 26 is connected to the first receiving module 24 and configured to perform satellite data according to the first receiving module 24. Positioning the satellite, and acquiring the precise location of the terminal and the updated satellite data corresponding to the precise location; the second transmitting module 28 is coupled to the satellite positioning module 26 and configured to update the precise location and the precise location of the satellite positioning module 26 The satellite data is sent to the satellite data sharing center.
  • the first sending module 22 of the terminal sends its own location-related information to the satellite data sharing center on the network side through the above module, and the first receiving module 24 obtains corresponding satellite data from the satellite data sharing center, and the satellite positioning module 26 Performing satellite positioning according to the satellite data, and transmitting, by the second sending module 28, the precise position acquired by the positioning and the corresponding updated satellite data to the satellite data sharing center, without separately constructing the reference receiver, through the network side
  • the satellite data sharing center shares the data collected by the user terminal, which can realize the fast satellite positioning of the terminal, and because of the large number of terminals and wide distribution range, the data accuracy and construction in the AGPS service in the related technology are solved.
  • the satellite positioning module 26 may also be configured to perform conventional GPS satellite positioning and acquire the precise location of the terminal.
  • the second sending module 28 may be further configured to send the precise location and the satellite data corresponding to the precise location to the satellite data sharing center.
  • FIG. 3 is a flowchart of another satellite positioning method according to an embodiment of the present invention. As shown in FIG.
  • the method includes the following steps: Step S302, Network The satellite data sharing center of the side receives the precise location sent by the multiple terminals and the satellite data corresponding to the precise location, where the satellite data sharing center is used to share the received satellite data; Step S304, the satellite data sharing center receives the terminal data from the terminal Position-related information; Step S306, the satellite data sharing center queries the satellite data of the location corresponding to the location-related information according to the location-related information, and transmits the satellite data to the sender terminal corresponding to the location-related information.
  • the satellite data sharing center acquires the precise location of the body and the corresponding satellite data sent by the multiple terminals, and then receives the location-related information sent by the terminal, and finds the related information through the location.
  • the satellite data corresponding to the location, and the satellite data is sent to the sender terminal of the location-related information, and the referenced receiver is not separately constructed, and the data collected by the user terminal is shared by the satellite data sharing center on the network side, thereby realizing the terminal.
  • the rapid satellite positioning and because of the large number of terminals and wide distribution range, solves the problem that the data in the AGPS service in the related technology has low accuracy and large construction investment, enhances the TTTF of the positioning service, and improves the accuracy of the positioning service. And reduce construction costs.
  • the satellite data sharing center may also write the precise location sent by the received multiple terminals and the satellite data corresponding to the precise location into the shared database for solid storage. In this way, the security of the data is improved.
  • the satellite data may include: GPS capture auxiliary information, GPS positioning auxiliary information, GPS sensitivity auxiliary information, GPS satellite working status information, GPS almanac and correction data, GPS ephemeris, GPS navigation message, and the like.
  • the location related information sent by the terminal to the satellite data sharing center may be the base station identifier (for example, Cell ID) of the terminal, or may be the WiFi hotspot information of the terminal, or the MAC address of the terminal, etc. Information that reflects its location. In this way, the flexibility of the use of the solution is improved.
  • the satellite data sharing center is located on the network side, and the device is configured to implement the above embodiment and the preferred embodiment.
  • the term "module" can implement software for a predetermined function and / Or a combination of hardware.
  • the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and conceivable.
  • 4 is a structural block diagram of another satellite positioning apparatus according to an embodiment of the present invention. As shown in FIG. 4, the apparatus includes: a second receiving module 42, a third receiving module 44, and a third transmitting module 46, Each module is described in detail.
  • the second receiving module 42 is configured to receive the precise location sent by the multiple terminals and the satellite data corresponding to the precise location, where the satellite data sharing center is used to share the received satellite data; and the third receiving module 44 is configured to Receiving the location-related information from the terminal; the third sending module 46 is connected to the second receiving module 42 and the third receiving module 44, and is configured to query the satellite data of the location corresponding to the location-related information according to the location-related information, and send the satellite data The sender terminal corresponding to the location related information.
  • the second receiving module 42 of the satellite data sharing center acquires the precise location of the body and the corresponding satellite data sent by the plurality of terminals, and then receives the location related information sent by the terminal through the third receiving module 44.
  • FIG. 5 is a block diagram of a preferred structure of another satellite positioning apparatus according to an embodiment of the present invention. As shown in FIG.
  • the apparatus may further include: a writing module 52 connected to the second receiving module 42 and configured to receive The precise location and precise location of the satellite data sent by multiple terminals are written to the shared database.
  • a satellite positioning system is also provided.
  • FIG. 6 is a structural block diagram of a satellite positioning system according to an embodiment of the present invention. As shown in FIG. 6, the system includes the above-mentioned terminal in FIG. The satellite positioning device 20 further includes a satellite positioning device 40 located at the satellite data sharing center as shown in FIG. 4 or 5. The following description will be made in conjunction with the preferred embodiments, and the following preferred embodiments incorporate the above-described embodiments and preferred embodiments thereof.
  • the mobile terminal field and the satellite positioning technology field are taken as an example for illustration, and a satellite data transmission scheme on a mobile terminal is provided, which provides a method for sharing satellite data, and effectively enables the mobile terminal.
  • Get the latest satellite assistance data The method is to add a satellite data sharing module to the mobile terminal (implementing the functions of the first sending module 22, the first receiving module 24, and the second sending module 28).
  • a satellite data sharing center is set up in the network to provide satellite auxiliary data. Through the satellite data sharing center, the latest satellite data can be exchanged and shared between mobile terminals.
  • FIG. 7 is a schematic diagram of a satellite data transmission architecture according to a preferred embodiment of the present invention. Referring to the architecture of FIG.
  • the satellite positioning scheme in the preferred embodiment may include the following steps: Step S702: The positioning terminal starts satellite positioning; Step S704, by satellite The data sharing module collects the positioning terminal and the location-related information (for example, Cell Identity (Cell Identity), WiFi hotspot information, Media Access Control (MAC) address, etc.); Step S706, The satellite data sharing module and the satellite data sharing center perform wireless air communication, and transmit location related information of the positioning terminal to the center; Step S708, the satellite data sharing center parses the position related information, obtains a rough position, and queries the latest satellite near the rough position in the database.
  • Step S702 The positioning terminal starts satellite positioning
  • Step S704 by satellite The data sharing module collects the positioning terminal and the location-related information (for example, Cell Identity (Cell Identity), WiFi hotspot information, Media Access Control (MAC) address, etc.);
  • Step S706 The satellite data sharing module and the satellite data sharing center perform wireless air communication, and transmit location related information of the positioning terminal to the center;
  • Step S708 the satellite data sharing center par
  • step S710 the satellite data sharing center returns the latest satellite data to the positioning terminal by wireless air communication; and in step S712, the satellite data sharing module transmits the acquired latest satellite data to the satellite positioning module (implementing the function of the satellite positioning module 26)
  • the satellite positioning module starts fast satellite positioning according to the latest satellite data, and acquires the precise location of the terminal and the updated satellite data; (If the latest satellite data in the vicinity cannot be acquired through the satellite sharing center in steps S708 and S710, then the satellite positioning module Ordinary satellite positioning can be started to obtain the precise location of the terminal and the updated satellite data.
  • the satellite data sharing module transmits the precise location and the updated satellite data to the satellite data sharing center record for use by other terminals.
  • Step S802 a positioning service on the mobile phone initiates GPS satellite positioning;
  • Step S804 the satellite data sharing module receives the positioning request, and calls the relevant API provided by the mobile phone to acquire the base station number of the mobile phone, for example, CelllD.
  • Step S806 the satellite data sharing module sends the information such as CelllD to the satellite data sharing center through the wireless data link;
  • Step S808, the satellite data sharing center receives the CelllD, and queries the latest satellite data near the CelllD.
  • step S810 the satellite data sharing center returns the latest satellite data to the mobile phone; step S812, after receiving the satellite data, the satellite data sharing module initiates fast GPS positioning to the satellite positioning module; step S814, satellite positioning Module acquires precise location and updated satellite data via GPS satellite system
  • step S816 the satellite data sharing module transmits the precise location and the updated satellite data to the satellite data sharing center via the wireless data link; step S818, satellite data sharing The center records the location and updated satellite data (eg, ephemeris data). If the data is not queried in step S808, steps S810 and S812 may be changed as follows, and the remaining steps are unchanged. Step S810, the satellite data sharing center does not query the nearby ephemeris data, and returns the result to the mobile phone. In step S812, the satellite data sharing module initiates normal GPS positioning to the satellite positioning module.
  • satellite data sharing module initiates normal GPS positioning to the satellite positioning module.
  • the ephemeris data can be acquired without relying on a Position Determination Entity (PDE) (ie, a reference receiver), without renting or establishing a satellite reference receiving network.
  • PDE Position Determination Entity
  • software is also provided for performing the technical solutions described in the above embodiments and preferred embodiments.
  • a storage medium is also provided, the software being stored, including but not limited to an optical disk, a floppy disk, a hard disk, a rewritable memory, and the like.
  • embodiments of the invention are not limited to any specific combination of hardware and software.
  • the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.
  • the technical solution of the embodiments of the present invention can be applied to the location service field of a mobile network, and solves the problem that the data accuracy and the construction investment in the AGPS service in the related art are relatively large, and the TTTF of the location service is enhanced. Improve positioning service accuracy and reduce construction costs.

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  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

一种卫星定位方法、装置及系统,其中,该方法包括:终端将自身的位置相关信息发送给网络侧的卫星数据共享中心,其中,该卫星数据共享中心用于共享接收到的卫星数据(S102);终端接收来自卫星数据共享中心的上述位置相关信息对应位置的卫星数据(S104);终端根据该卫星数据进行卫星定位,并获取终端的精确位置以及该精确位置对应的更新的卫星数据(S106);终端将该精确位置以及该精确位置对应的更新的卫星数据发送给卫星数据共享中心(S108)。本发明能够提高AGPS的数据精度并降低建设成本,增强定位服务的TTFF。

Description

卫星定位方法、 装置及系统
技术领域 本发明涉及通信领域, 具体而言, 涉及一种卫星定位方法、 装置及系统。 背景技术 位置业务(Location Based Service, 简称为 LBS)是指移动网络通过特定的定位技 术来获取移动终端的位置信息, 从而为终端用户提供附加服务的一种增值业务, 可广 泛应用于紧急救援、 导航追踪、 运输调度、 移动黄页等诸多方面。 近年来, 随着用户需求的增加, 移动定位技术受到越来越多的关注, 特别是 3G, 4G技术的日益成熟为移动定位技术的发展提供了支持。 在 2G或 2.5G的网络里, 由 于受到网络传输速度的限制, 高精度定位技术一网络辅助的全球定位系统(Assisted Global Positioning System, 简称为 A-GPS) 的应用受到局限, 而 3G, 4G网络可以提 供高速无线下载功能, 这就为移动定位业务提供了更加广阔的发展空间。
A-GPS (Assisted Global Positioning System) 即网络辅助的全球定位系统, 这种方 法需要网络和移动终端都能够接收 GPS信息, 是一种结合了网络基站信息和 GPS信 息对移动终端进行定位的技术, 可以在 2G和 3G网络中使用。此技术的优势主要在其 定位精度上, 在室外等空旷地区, 正常工作环境下其精度可达 5〜10m, 堪称目前定位 精度最高的一种定位技术。 另一方面, 利用网络传来的辅助信息可以增强首次定位时 间 (Time To First Fix, 简称为 TTFF), 其首次捕获 GPS信号的时间大大减小, 一般仅 需几秒, 而不像全球定位系统(Global Position System, 简称为 GPS)的首次捕获时间 可能需要 2〜3分钟 (min)。 A-GPS定位响应时间为 3〜10秒 (s) 之间。 作为一种高精度的移动定位技术, A-GPS通过移动终端和 GPS辅助定位信息共同 获取移动终端的位置信息, 因而需要在移动终端内增加 A-GPS接收机模块(或者外接 A-GPS接收机), 同时要在网络上加建位置服务器, 参考接收机等设备。
A-GPS的定位流程如下: ( 1 ) 移动终端首先将本身的基站地址通过网络传输到位置服务器。
(2)位置服务器根据该终端的大概位置传输与该位置相关的卫星辅助数据,例如: GPS星历等。 (3 )利用这些信息, 终端的 A-GPS模块可以很快捕获卫星, 以提升 GPS信号的 第一锁定时间 (也即 TTFF) 能力, 并接收 GPS原始信号, 在解调信号后, 计算终端 到卫星的伪距, 其中, 伪距就是受各种 GPS误差影响的距离。
(4) 终端根据测量的 GPS伪距和 GPS卫星辅助信息完成对精确位置的计算。 需要注意的是, 整个方案中的卫星辅助数据由参考接收机提供。 参考接收机实时 地从卫星处获得参考数据(例如, 时钟、 星历表、 可用星座、 参考位置等), 通过网络 提供给位置服务器。 当移动终端需要卫星数据时, 位置服务器通过无线网络给终端提 供 A-GPS辅助数据, 以增强其 TTTF, 从而大大提高 A-GPS接收模块的灵敏度。 但是, 目前 AGPS服务实际应用的缺点在于: 1、 参考接收机分布的问题, 由于参考接收机数量较少, 分布不均, 这样会导致数 据不够精细准确, 从而定位速度较慢。
2、 参考接收机的建设本身需要大规模资金的投入, 或者租用。 针对相关技术中 AGPS服务中存在的数据精确度较低且建设投入较大的问题, 目 前尚未提出有效的解决方案。 发明内容 针对相关技术中 AGPS服务中存在的数据精确度较低且建设投入较大的问题, 本 发明实施例提供了一种卫星定位方案, 以至少解决上述问题。 根据本发明实施例的一个方面, 提供了一种卫星定位方法, 包括: 终端将自身的 位置相关信息发送给网络侧的卫星数据共享中心, 其中, 所述卫星数据共享中心用于 共享接收到的卫星数据; 所述终端接收来自所述卫星数据共享中心的所述位置相关信 息对应的位置的卫星数据; 所述终端根据所述卫星数据进行卫星定位, 并获取所述终 端的精确位置以及所述精确位置对应的更新的卫星数据; 所述终端将所述精确位置以 及所述精确位置对应的更新的卫星数据发送给所述卫星数据共享中心。 优选地,在所述终端未接收到所述位置相关信息对应的位置的卫星数据的情况下, 所述终端进行常规 GPS卫星定位,并获取所述终端的精确位置以及所述精确位置对应 的卫星数据; 所述终端将所述精确位置以及所述精确位置对应的卫星数据发送给所述 卫星数据共享中心。 优选地, 所述卫星数据包括以下至少之一: GPS捕获辅助信息, GPS定位辅助信 息, GPS灵敏度辅助信息, GPS卫星工作状况信息, GPS历书以及修正数据, GPS星 历, GPS导航电文。 优选地, 所述位置相关信息包括以下至少之一: 所述终端的基站标识, 所述终端 的 WiFi热点信息, 所述终端的 MAC地址, 所述终端的 RFID。 根据本发明实施例的另一方面, 提供了一种卫星定位方法, 包括: 网络侧的卫星 数据共享中心接收多个终端发来的精确位置及所述精确位置对应的卫星数据, 其中, 所述卫星数据共享中心用于共享接收到的卫星数据; 所述卫星数据共享中心接收来自 终端的位置相关信息; 所述卫星数据共享中心根据所述位置相关信息查询所述位置相 关信息对应的位置的卫星数据, 并将所述卫星数据发送给所述位置相关信息对应的发 送方终端。 优选地, 在网络侧的卫星数据共享中心接收多个终端发来的精确位置及所述精确 位置对应的卫星数据之后, 还包括: 所述卫星数据共享中心将接收到的所述多个终端 发来的精确位置及所述精确位置对应的卫星数据写入共享数据库。 根据本发明实施例的再一方面, 提供了一种卫星定位装置, 位于终端中, 包括: 第一发送模块, 设置为将自身的位置相关信息发送给网络侧的卫星数据共享中心, 其 中, 所述卫星数据共享中心用于共享接收到的卫星数据; 第一接收模块, 设置为接收 来自所述卫星数据共享中心的所述位置相关信息对应的位置的卫星数据; 卫星定位模 块, 设置为根据所述卫星数据进行卫星定位, 并获取所述终端的精确位置以及所述精 确位置对应的更新的卫星数据; 第二发送模块, 设置为将所述精确位置以及所述精确 位置对应的更新的卫星数据发送给所述卫星数据共享中心。 优选地, 在所述第一接收模块未接收到所述位置相关信息对应的位置的卫星数据 的情况下, 所述卫星定位模块还设置为进行常规 GPS卫星定位, 并获取所述终端的精 确位置以及所述精确位置对应的卫星数据; 所述第二发送模块还设置为将所述精确位 置以及所述精确位置对应的卫星数据发送给所述卫星数据共享中心。 根据本发明实施例的再一方面, 还提供了一种卫星定位装置, 位于网络侧的卫星 数据共享中心, 包括: 第二接收模块, 设置为接收多个终端发来的精确位置及所述精 确位置对应的卫星数据, 其中, 所述卫星数据共享中心用于共享接收到的卫星数据; 第三接收模块, 设置为接收来自终端的位置相关信息; 第三发送模块, 设置为根据所 述位置相关信息查询所述位置相关信息对应的位置的卫星数据, 并将所述卫星数据发 送给所述位置相关信息对应的发送方终端。 优选地, 所述装置还包括: 写入模块, 设置为将接收到的所述多个终端发来的精 确位置及所述精确位置对应的卫星数据写入共享数据库。 根据本发明实施例的还一方面, 提供了一种卫星定位系统, 包括上述的位于终端 中的卫星定位装置, 还包括上述的位于网络侧的卫星数据共享中心的卫星定位装置。 通过本发明实施例, 采用终端将自身的位置相关信息发送给网络侧的卫星数据共 享中心, 其中, 该卫星数据共享中心用于共享接收到的卫星数据; 终端接收来自卫星 数据共享中心的上述位置相关信息对应位置的卫星数据; 终端根据该卫星数据进行卫 星定位, 并获取终端的精确位置以及该精确位置对应的更新的卫星数据; 终端将该精 确位置以及该精确位置对应的更新的卫星数据发送给卫星数据共享中心的方式, 解决 了相关技术中 AGPS服务中存在的数据精确度较低且建设投入较大的问题, 增强了定 位服务的 TTTF, 提高了定位服务精度, 并且降低了建设成本。 附图说明 此处所说明的附图用来提供对本发明的进一步理解, 构成本申请的一部分, 本发 明的示意性实施例及其说明用于解释本发明, 并不构成对本发明的不当限定。 在附图 中: 图 1是根据本发明实施例的卫星定位方法的流程图; 图 2是根据本发明实施例的卫星定位装置的结构框图; 图 3是根据本发明实施例的另一种卫星定位方法的流程图; 图 4是根据本发明实施例的另一种卫星定位装置的结构框图; 图 5是根据本发明实施例的另一种卫星定位装置的优选结构框图; 图 6是根据本发明实施例的卫星定位系统的结构框图; 图 7是根据本发明优选实施例的卫星数据传输架构示意图; 图 8是根据本发明优选实施例的在手机中的卫星数据的传输过程流程图。 具体实施方式 下文中将参考附图并结合实施例来详细说明本发明实施例。 需要说明的是, 在不 冲突的情况下, 本申请中的实施例及实施例中的特征可以相互组合。 在本实施例中, 提供了一种卫星定位方法, 图 1是根据本发明实施例的卫星定位 方法的流程图, 如图 1所示, 该方法包括如下步骤: 步骤 S102,终端将自身的位置相关信息发送给网络侧的卫星数据共享中心,其中, 该卫星数据共享中心用于共享接收到的卫星数据; 步骤 S104,终端接收来自卫星数据共享中心的上述位置相关信息对应位置的卫星 数据; 步骤 S106, 终端根据该卫星数据进行卫星定位, 并获取终端的精确位置以及该精 确位置对应的更新的卫星数据; 步骤 S108,终端将该精确位置以及该精确位置对应的更新的卫星数据发送给卫星 数据共享中心。 本实施例通过上述步骤, 终端根据自身的位置相关信息, 从卫星数据共享中心获 取到相应的卫星数据, 根据该卫星数据进行卫星定位, 并将定位成功后获取到的自身 精确位置以及对应的更新后的卫星数据发送给卫星数据共享中心, 无需另外建设参考 接收机, 通过网络侧的卫星数据共享中心将用户终端采集的数据进行共享, 即可实现 终端的快速卫星定位,并且由于终端数量众多,分布范围广,解决了相关技术中 AGPS 服务中存在的数据精确度较低且建设投入较大的问题, 增强了定位服务的 TTTF, 提 高了定位服务精度, 并且降低了建设成本。 优选地, 如果终端未接收到位置相关信息对应的位置的卫星数据, 例如卫星数据 共享中心中不存在该位置附近的卫星数据, 在这种情况下, 终端可以进行常规的 GPS 卫星定位业务,在通过常规 GPS卫星定位业务获取到终端的精确位置以及该精确位置 对应的卫星数据后, 终端可以将该精确位置以及该精确位置对应的卫星数据发送给卫 星数据共享中心, 以便该终端附近的其他终端采用这些信息进行快速卫星定位。 优选地, 上述卫星数据可以包括: GPS捕获辅助信息, GPS定位辅助信息, GPS 灵敏度辅助信息, GPS卫星工作状况信息, GPS历书以及修正数据, GPS星历, GPS 导航电文等。 优选地, 终端向卫星数据共享中心发送的其自身的位置相关信息可以是该终端的 基站标识 (Cell ID), 或者, 也可以是终端的无线保真技术 (Wireless Fidelity, 简称为 WiFi) 热点信息, 或者还可以是终端的介质访问控制 (Media Access Control, 简称为 MAC ) 地址, 射频标识 (Radio Frequency ID, 简称为 RFID) 等, 以及其他与位置相 关的能够反映终端位置的设备信息。 通过这种方式, 提升了方案的使用灵活性。 对应于上述卫星定位方法,在本实施例中提供了一种卫星定位装置,位于终端中, 该装置设置为实现上述实施例及优选实施方式, 已经进行过说明的不再赘述。 如以下 所使用的, 术语"模块"可以实现预定功能的软件和 /或硬件的组合。 尽管以下实施例所 描述的装置较佳地以软件来实现, 但是硬件, 或者软件和硬件的组合的实现也是可能 并被构想的。 图 2是根据本发明实施例的卫星定位装置的结构框图, 如图 2所示,该装置包括: 第一发送模块 22、 第一接收模块 24、 卫星定位模块 26以及第二发送模块 28, 下面对 各个模块进行详细说明。 第一发送模块 22, 设置为将自身的位置相关信息发送给网络侧的卫星数据共享中 心, 其中, 该卫星数据共享中心设置为共享接收到的卫星数据; 第一接收模块 24, 与 第一发送模块 22相连,设置为接收来自卫星数据共享中心的位置相关信息对应的位置 的卫星数据; 卫星定位模块 26, 与第一接收模块 24相连, 设置为根据第一接收模块 24接收到的卫星数据进行卫星定位, 并获取终端的精确位置以及该精确位置对应的更 新的卫星数据; 第二发送模块 28, 与卫星定位模块 26相连, 设置为将卫星定位模块 26获取的精确位置以及精确位置对应的更新的卫星数据发送给卫星数据共享中心。 本实施例通过上述模块,终端的第一发送模块 22向网络侧的卫星数据共享中心发 送自身的位置相关信息, 第一接收模块 24 从卫星数据共享中心获取到相应的卫星数 据, 卫星定位模块 26根据该卫星数据进行卫星定位, 并通过第二发送模块 28将定位 成功后获取到的自身精确位置以及对应的更新后的卫星数据发送给卫星数据共享中 心, 无需另外建设参考接收机, 通过网络侧的卫星数据共享中心将用户终端采集的数 据进行共享, 即可实现终端的快速卫星定位, 并且由于终端数量众多, 分布范围广, 解决了相关技术中 AGPS服务中存在的数据精确度较低且建设投入较大的问题, 增强 了定位服务的 TTTF, 提高了定位服务精度, 并且降低了建设成本。 优选地,在第一接收模块 24未接收到位置相关信息对应的位置的卫星数据的情况 下, 卫星定位模块 26还可以设置为进行常规 GPS卫星定位, 并获取终端的精确位置 以及该精确位置对应的卫星数据,第二发送模块 28还可以设置为将该精确位置以及该 精确位置对应的卫星数据发送给卫星数据共享中心。 在本实施例中还提供了另一种卫星定位方法, 图 3是根据本发明实施例的另一种 卫星定位方法的流程图, 如图 3所示, 该方法包括如下步骤: 步骤 S302, 网络侧的卫星数据共享中心接收多个终端发来的精确位置及该精确位 置对应的卫星数据, 其中, 卫星数据共享中心用于共享接收到的卫星数据; 步骤 S304, 卫星数据共享中心接收来自终端的位置相关信息; 步骤 S306,卫星数据共享中心根据位置相关信息查询位置相关信息对应的位置的 卫星数据, 并将该卫星数据发送给上述位置相关信息对应的发送方终端。 本实施例通过上述步骤, 卫星数据共享中心获取到多个终端发来的身精确位置以 及对应的卫星数据, 然后再接收到终端发来的位置相关信息的情况下, 通过该位置相 关信息查找到该位置对应的卫星数据, 并将该卫星数据发送给位置相关信息的发送方 终端, 无需另外建设参考接收机, 通过网络侧的卫星数据共享中心将用户终端采集的 数据进行共享, 即可实现终端的快速卫星定位, 并且由于终端数量众多, 分布范围广, 解决了相关技术中 AGPS服务中存在的数据精确度较低且建设投入较大的问题, 增强 了定位服务的 TTTF, 提高了定位服务精度, 并且降低了建设成本。 优选地, 卫星数据共享中心还可以将接收到的多个终端发来的精确位置及该精确 位置对应的卫星数据写入共享数据库进行固化存储。 通过这种方式, 提高了数据的安 全性。 优选地, 上述卫星数据可以包括: GPS捕获辅助信息, GPS定位辅助信息, GPS 灵敏度辅助信息, GPS卫星工作状况信息, GPS历书以及修正数据, GPS星历, GPS 导航电文等。 优选地, 终端向卫星数据共享中心发送的其自身的位置相关信息可以是该终端的 基站标识(例如, Cell ID), 或者, 也可以是终端的 WiFi热点信息, 或者终端的 MAC 地址等其他能够反映其位置的信息。 通过这种方式, 提升了方案的使用灵活性。 对应于上述另一种卫星定位方法, 在本实施例中还提供了另一种卫星定位装置, 位于网络侧的卫星数据共享中心, 该装置设置为实现上述实施例及优选实施方式, 已 经进行过说明的不再赘述。 如以下所使用的, 术语"模块"可以实现预定功能的软件和 / 或硬件的组合。 尽管以下实施例所描述的装置较佳地以软件来实现, 但是硬件, 或者 软件和硬件的组合的实现也是可能并被构想的。 图 4是根据本发明实施例的另一种卫星定位装置的结构框图, 如图 4所示, 该装 置包括: 第二接收模块 42, 第三接收模块 44以及第三发送模块 46, 下面对各个模块 进行详细说明。 第二接收模块 42, 设置为接收多个终端发来的精确位置及该精确位置对应的卫星 数据, 其中, 上述卫星数据共享中心用于共享接收到的卫星数据; 第三接收模块 44, 设置为接收来自终端的位置相关信息; 第三发送模块 46, 与第二接收模块 42和第三 接收模块 44 相连, 设置为根据位置相关信息查询位置相关信息对应的位置的卫星数 据, 并将卫星数据发送给位置相关信息对应的发送方终端。 本实施例通过上述步骤,卫星数据共享中心的第二接收模块 42获取到多个终端发 来的身精确位置以及对应的卫星数据,然后再通过第三接收模块 44接收到终端发来的 位置相关信息的情况下, 通过该位置相关信息查找到该位置对应的卫星数据, 并通过 第三发送模块 46将该卫星数据发送给位置相关信息的发送方终端,无需另外建设参考 接收机, 通过网络侧的卫星数据共享中心将用户终端采集的数据进行共享, 即可实现 终端的快速卫星定位,并且由于终端数量众多,分布范围广,解决了相关技术中 AGPS 服务中存在的数据精确度较低且建设投入较大的问题, 增强了定位服务的 TTTF, 提 高了定位服务精度, 并且降低了建设成本。 图 5是根据本发明实施例的另一种卫星定位装置的优选结构框图, 如图 5所示, 该装置还可以包括: 写入模块 52, 与第二接收模块 42相连, 设置为将接收到的多个 终端发来的精确位置及精确位置对应的卫星数据写入共享数据库。 在本实施例中, 还提供了一种卫星定位系统, 图 6是根据本发明实施例的卫星定 位系统的结构框图, 如图 6所示, 该系统包括上述如图 2所示的位于终端中的卫星定 位装置 20, 还包括如图 4或图 5所示的位于卫星数据共享中心的卫星定位装置 40。 下面结合优选实施例进行说明, 以下优选实施例结合了上述实施例及其优选实施 方式。 在本优选实施例中, 以移动终端领域和卫星定位技术领域为例进行说明, 提供了 一种移动终端上的卫星数据传输方案, 该方案提供一种共享卫星数据的方式, 有效地 让移动终端获取最新的卫星辅助数据。 该方式是在移动终端里增加一个卫星数据共享 模块(实现了上述第一发送模块 22、 第一接收模块 24以及第二发送模块 28的功能), 负责卫星辅助数据的获取。 同时在网络中设置一个卫星数据共享中心, 负责卫星辅助 数据的提供。 通过卫星数据共享中心, 移动终端之间能够进行最新卫星数据的交换和 共享。 通过该卫星定位方案, 由于大量移动终端的共享, 从而在数据精细程度上远超 传统 AGPS服务; 并且由于数据更精细, 使得搜星范围更小, 定位更准, 速度更快; 此外, 还避免了传统 AGPS服务中参考接收机的大规模建设。 图 7是根据本发明优选实施例的卫星数据传输架构示意图, 参考图 7的架构, 本 优选实施例中的卫星定位方案可以包括如下步骤: 步骤 S702, 定位终端开始卫星定位; 步骤 S704, 通过卫星数据共享模块收集定位终端和位置相关的信息 (;例如, 小区 识别 (Cell Identity, 简称为 CellID), WiFi热点信息, 媒体接入控制 (Media Access Control, 简称为 MAC) 地址等); 步骤 S706, 卫星数据共享模块和卫星数据共享中心进行无线空中通信, 向中心传 输该定位终端的位置相关信息; 步骤 S708, 卫星数据共享中心解析位置相关信息, 获取粗略位置, 查询数据库中 粗略位置附近的最新卫星数据; 步骤 S710, 卫星数据共享中心通过无线空中通信向定位终端返回最新卫星数据; 步骤 S712, 卫星数据共享模块将获取的最新卫星数据传给卫星定位模块(实现了 上述卫星定位模块 26的功能), 卫星定位模块根据最新卫星数据开始快速卫星定位, 获取终端的精确位置和更新的卫星数据; (如果在步骤 S708、步骤 S710中通过卫星共 享中心无法获取附近的最新卫星数据, 那么卫星定位模块则可以开始普通卫星定位, 以获取终端的精确位置和更新的卫星数据) 步骤 S714,卫星数据共享模块将精确位置和更新的卫星数据传给卫星数据共享中 心记录, 以供其他终端使用。 图 8是根据本发明优选实施例的在手机中的卫星数据的传输过程流程图, 如图 8 所示, 在手机中的卫星数据的传输过程包括如下步骤: (需要说明的是, 以下步骤主要 描述正常情况, 如发生异常情况, 可以将本过程结束) 步骤 S802, 手机上某定位业务发起 GPS卫星定位; 步骤 S804, 卫星数据共享模块接收到定位请求, 调用手机提供的相关 API获取手 机的基站号, 例如 CelllD; 步骤 S806,卫星数据共享模块通过无线数据链路将 CelllD等信息发送给卫星数据 共享中心; 步骤 S808,卫星数据共享中心接收到 CelllD,查询该 CelllD附近的最新卫星数据
(例如, 星历数据); 步骤 S810, 卫星数据共享中心将最新卫星数据返回给手机; 步骤 S812, 卫星数据共享模块接收到卫星数据后, 对卫星定位模块发起快速 GPS 定位; 步骤 S814, 卫星定位模块通过 GPS卫星系统获取到精确位置和更新的卫星数据
(例如, 星历数据), 将之返回给卫星数据共享模块; 步骤 S816,卫星数据共享模块通过无线数据链路将精确位置和更新的卫星数据发 送给卫星数据共享中心; 步骤 S818, 卫星数据共享中心记录该位置和更新的卫星数据 (例如, 星历数据)。 其中, 如果在步骤 S808中查询不到数据, 则可以将步骤 S810和 S812改变如下, 其余各步骤不变。 步骤 S810, 卫星数据共享中心没有查询到附近星历数据, 将结果返回给手机; 步骤 S812, 卫星数据共享模块对卫星定位模块发起普通 GPS定位。 通过本优选实施例中的上述方案, 可不依赖于定位实体 (Position Determination Entity, 简称为 PDE) (即参考接收机) 获取星历数据, 无需租借或建立卫星参考接收 网络。 在另外一个实施例中, 还提供了一种软件, 该软件用于执行上述实施例及优选实 施例中描述的技术方案。 在另外一个实施例中, 还提供了一种存储介质, 该存储介质中存储有上述软件, 该存储介质包括但不限于光盘、 软盘、 硬盘、 可擦写存储器等。 显然, 本领域的技术人员应该明白, 上述的本发明实施例的各模块或各步骤可以 用通用的计算装置来实现, 它们可以集中在单个的计算装置上, 或者分布在多个计算 装置所组成的网络上, 可选地, 它们可以用计算装置可执行的程序代码来实现, 从而, 可以将它们存储在存储装置中由计算装置来执行, 并且在某些情况下, 可以以不同于 此处的顺序执行所示出或描述的步骤, 或者将它们分别制作成各个集成电路模块, 或 者将它们中的多个模块或步骤制作成单个集成电路模块来实现。 这样, 本发明实施例 不限制于任何特定的硬件和软件结合。 以上所述仅为本发明的优选实施例而已, 并不用于限制本发明, 对于本领域的技 术人员来说, 本发明可以有各种更改和变化。 凡在本发明的精神和原则之内, 所作的 任何修改、 等同替换、 改进等, 均应包含在本发明的保护范围之内。 工业实用性 本发明实施例的技术方案可以应用于移动网络的位置业务领域, 解决了相关技术 中 AGPS 服务中存在的数据精确度较低且建设投入较大的问题, 增强了定位服务的 TTTF, 提高了定位服务精度, 并且降低了建设成本。

Claims

权 利 要 求 书
1. 一种卫星定位方法, 包括:
终端将自身的位置相关信息发送给网络侧的卫星数据共享中心, 其中, 所 述卫星数据共享中心用于共享接收到的卫星数据;
所述终端接收来自所述卫星数据共享中心的所述位置相关信息对应的位置 的卫星数据;
所述终端根据所述卫星数据进行卫星定位, 并获取所述终端的精确位置以 及所述精确位置对应的更新的卫星数据;
所述终端将所述精确位置以及所述精确位置对应的更新的卫星数据发送给 所述卫星数据共享中心。
2. 根据权利要求 1所述的方法, 其中, 在所述终端未接收到所述位置相关信息对 应的位置的卫星数据的情况下,
所述终端进行常规全球定位系统 GPS卫星定位,并获取所述终端的精确位 置以及所述精确位置对应的卫星数据;
所述终端将所述精确位置以及所述精确位置对应的卫星数据发送给所述卫 星数据共享中心。
3. 根据权利要求 1或 2所述的方法, 其中, 所述卫星数据包括以下至少之一:
GPS捕获辅助信息, GPS定位辅助信息, GPS灵敏度辅助信息, GPS卫星 工作状况信息, GPS历书以及修正数据, GPS星历, GPS导航电文。
4. 根据权利要求 1至 3中任一项所述的方法, 其中, 所述位置相关信息包括以下 至少之一:
所述终端的基站标识,所述终端的无线保真技术 WiFi热点信息,所述终端 的介质访问控制 MAC地址, 所述终端的射频标识 RFID。
5. 一种卫星定位方法, 包括:
网络侧的卫星数据共享中心接收多个终端发来的精确位置及所述精确位置 对应的卫星数据, 其中, 所述卫星数据共享中心用于共享接收到的卫星数据; 所述卫星数据共享中心接收来自终端的位置相关信息; 所述卫星数据共享中心根据所述位置相关信息查询所述位置相关信息对应 的位置的卫星数据, 并将所述卫星数据发送给所述位置相关信息对应的发送方 终端。 根据权利要求 5所述的方法, 其中, 在网络侧的卫星数据共享中心接收多个终 端发来的精确位置及所述精确位置对应的卫星数据之后, 还包括:
所述卫星数据共享中心将接收到的所述多个终端发来的精确位置及所述精 确位置对应的卫星数据写入共享数据库。 一种卫星定位装置, 位于终端中, 包括:
第一发送模块, 设置为将自身的位置相关信息发送给网络侧的卫星数据共 享中心, 其中, 所述卫星数据共享中心用于共享接收到的卫星数据;
第一接收模块, 设置为接收来自所述卫星数据共享中心的所述位置相关信 息对应的位置的卫星数据;
卫星定位模块, 设置为根据所述卫星数据进行卫星定位, 并获取所述终端 的精确位置以及所述精确位置对应的更新的卫星数据;
第二发送模块, 设置为将所述精确位置以及所述精确位置对应的更新的卫 星数据发送给所述卫星数据共享中心。 根据权利要求 7所述的装置, 其中, 在所述第一接收模块未接收到所述位置相 关信息对应的位置的卫星数据的情况下,
所述卫星定位模块还设置为进行常规 GPS卫星定位,并获取所述终端的精 确位置以及所述精确位置对应的卫星数据;
所述第二发送模块还设置为将所述精确位置以及所述精确位置对应的卫星 数据发送给所述卫星数据共享中心。 一种卫星定位装置, 位于网络侧的卫星数据共享中心, 包括:
第二接收模块, 设置为接收多个终端发来的精确位置及所述精确位置对应 的卫星数据, 其中, 所述卫星数据共享中心用于共享接收到的卫星数据; 第三接收模块, 设置为接收来自终端的位置相关信息;
第三发送模块, 设置为根据所述位置相关信息查询所述位置相关信息对应 的位置的卫星数据, 并将所述卫星数据发送给所述位置相关信息对应的发送方 终端。
10. 根据权利要求 9所述的装置, 其中, 所述装置还包括:
写入模块, 设置为将接收到的所述多个终端发来的精确位置及所述精确位 置对应的卫星数据写入共享数据库。
11. 一种卫星定位系统,包括如权利要求 7或 8所述的位于终端中的卫星定位装置, 括如权利要求 9或 10所述的位于网络侧的卫星数据共享中心的卫星定位装
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