CN109141214B - Deformation monitoring multi-source evidence printing method based on Beidou meteorological model - Google Patents
Deformation monitoring multi-source evidence printing method based on Beidou meteorological model Download PDFInfo
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- CN109141214B CN109141214B CN201711026094.XA CN201711026094A CN109141214B CN 109141214 B CN109141214 B CN 109141214B CN 201711026094 A CN201711026094 A CN 201711026094A CN 109141214 B CN109141214 B CN 109141214B
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000012544 monitoring process Methods 0.000 title claims abstract description 20
- 238000012937 correction Methods 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 230000001939 inductive effect Effects 0.000 claims abstract description 7
- 238000012545 processing Methods 0.000 claims description 15
- 238000001914 filtration Methods 0.000 claims description 10
- 230000003416 augmentation Effects 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 239000005433 ionosphere Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
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Abstract
The invention provides a deformation monitoring multi-source evidence printing method based on a Beidou meteorological model, which comprises the following steps of: step (1): obtaining high-precision positioning data based on the Beidou receiver and the foundation enhancement system; step (2): calculating the correction number of the atmosphere ionized layer through a foundation enhancement system to obtain the change rule of water vapor in the atmosphere; and (3): the water vapor change rule is used as an inducing factor to filter the fluctuation and noise of the position data, and the water vapor change rule is used as an inducing factor to filter the fluctuation and noise of the position data, so that the effectiveness of deformation monitoring data can be improved, and false alarm can be reduced.
Description
Technical Field
The invention relates to the field of deformation monitoring, in particular to a deformation monitoring multi-source evidence printing method based on a Beidou meteorological model.
Background
The positioning principle of the Global Navigation Satellite System (GNSS) is as follows: the user calculates the distance from the user receiver to the satellite and the real-time position of the satellite according to the received satellite navigation signal sent by the navigation satellite, and when the user simultaneously calculates the distances to the four satellites, the user can calculate the own real-time three-dimensional position. However, the user measured satellite-to-user receiver range also actually contains errors due to satellite ephemeris, the satellite clock, ionospheric and tropospheric delays, and receiver thermal noise and multipath effects, and so the measured range is actually a pseudorange. For example, a Positioning result directly calculated by pseudo-range has an error of about 12.5 m for a Global Positioning System (GPS) user. Therefore, in order to obtain a positioning result with higher precision, some auxiliary systems, such as a Ground Based Augmentation System (GBAS), have appeared.
Disclosure of Invention
In order to overcome the defects, the invention provides a deformation monitoring multi-source evidence printing method based on the Beidou meteorological model, which can improve the effectiveness of deformation monitoring data and reduce false alarms.
The invention provides a deformation monitoring multi-source evidence printing method based on a Beidou meteorological model, which comprises the following steps of:
step (1): obtaining high-precision positioning data based on the Beidou receiver and the foundation enhancement system;
step (2): calculating the correction number of the atmosphere ionized layer through a foundation enhancement system to obtain the change rule of water vapor in the atmosphere;
and (3): and filtering the fluctuation and noise of the position data by taking the water vapor change rule as an inducing factor.
The method above, wherein the ground based augmentation system comprises a data processing and positioning service center server and a common precision receiver; wherein the data processing and location service center server comprises: the device comprises a first acquisition module, a processing module, a conversion module and a sending module.
In the above method, the first obtaining module is configured to obtain a measurement value of each reference station in the high-precision ground-based augmentation system to a global navigation satellite system constellation satellite; the processing module is used for analyzing and processing the measured value to obtain high-precision positioning difference data, and the high-precision positioning difference data is used for high-precision positioning; the conversion module is used for converting the high-precision positioning difference data in a protocol format supported by a common precision receiver to obtain positioning difference data identified by the common precision receiver, the common precision receiver is a receiver which does not need to register in high-precision positioning service, and the positioning precision of the common precision receiver is smaller than that of the high-precision receiver; and the sending module is used for sending the positioning differential data identified by the common precision receiver to the common precision receiver.
The method above, wherein the ground based augmentation system further comprises a filtering module, and the filtering module filters fluctuation and noise of the position data.
The method described above, wherein, in the step (2): obtaining current meteorological data; and correcting atmospheric ionosphere parameters according to the meteorological data to obtain correction parameters, and calculating the change rule of water vapor in the atmosphere through the correction parameters.
The method described above, wherein, further comprising: and the processor in the ground station of the ground-based augmentation system is used for monitoring the atmospheric ionospheric correction parameters, evaluating the generated atmospheric ionospheric correction parameters in real time and sending the correction parameters to the processor in the ground station.
The invention has the following advantages: 1. the invention filters the fluctuation and noise of the position data by taking the water vapor change rule as an inducing factor, can improve the effectiveness of the deformation monitoring data and reduce false alarm.
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The invention and its features, aspects and advantages will become more apparent from reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference symbols in the various drawings indicate like elements. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the invention.
FIG. 1 is a schematic flow diagram of a deformation monitoring multi-source evidence printing method based on a Beidou meteorological model.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the invention.
In the following description, for the purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The following detailed description of the preferred embodiments of the invention, however, the invention is capable of other embodiments in addition to those detailed.
Referring to fig. 1, the invention provides a deformation monitoring multi-source evidence printing method based on a Beidou meteorological model, which comprises the following steps:
step (1): obtaining high-precision positioning data based on a Beidou receiver and a foundation enhancement system, wherein the foundation enhancement system comprises a data processing and positioning service center server and a common precision receiver; wherein the data processing and location service center server comprises: the system comprises a first acquisition module, a processing module, a conversion module and a sending module, wherein preferably, the first acquisition module is used for acquiring the measurement value of each reference station in the high-precision foundation enhancement system to the constellation satellite of the global navigation satellite system; the processing module is used for analyzing and processing the measured value to obtain high-precision positioning difference data, and the high-precision positioning difference data is used for high-precision positioning; the conversion module is used for converting the high-precision positioning difference data in a protocol format supported by a common precision receiver to obtain positioning difference data identified by the common precision receiver, the common precision receiver is a receiver which does not need to register in high-precision positioning service, and the positioning precision of the common precision receiver is smaller than that of the high-precision receiver; and the sending module is used for sending the positioning differential data identified by the common precision receiver to the common precision receiver.
Step (2): calculating the correction number of the atmosphere ionized layer through a foundation enhancement system to obtain the change rule of water vapor in the atmosphere, wherein the method also comprises the step of obtaining current meteorological data; correcting atmospheric ionosphere parameters according to the meteorological data to obtain correction parameters, calculating the change rule of water vapor in the atmosphere through the correction parameters, and further comprising: and the processor in the ground station of the ground-based augmentation system is used for monitoring the atmospheric ionospheric correction parameters, evaluating the generated atmospheric ionospheric correction parameters in real time and sending the correction parameters to the processor in the ground station.
And (3): and filtering the fluctuation and the noise of the position data by taking the water vapor change rule as an inducing factor, wherein the foundation enhancement system further comprises a filtering module, and the filtering module is used for filtering the fluctuation and the noise of the position data. The invention filters the fluctuation and noise of the position data by taking the water vapor change rule as an inducing factor, can improve the effectiveness of the deformation monitoring data and reduce false alarm.
The above description is of the preferred embodiment of the invention. It is to be understood that the invention is not limited to the particular embodiments described above, in that devices and structures not described in detail are understood to be implemented in a manner common in the art; those skilled in the art can make many possible variations and modifications to the disclosed embodiments, or modify equivalent embodiments to equivalent variations, without departing from the spirit of the invention, using the methods and techniques disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.
Claims (4)
1. A deformation monitoring multi-source evidence printing method based on a Beidou meteorological model is characterized by comprising the following steps:
step (1): obtaining high-precision positioning data based on the Beidou receiver and the foundation enhancement system;
step (2): calculating the correction number of the atmosphere ionized layer through a foundation enhancement system to obtain the change rule of water vapor in the atmosphere;
and (3): filtering fluctuation and noise of position data by taking the water vapor change rule as an inducing factor, wherein the foundation enhancement system comprises a data processing and positioning service center server and a common precision receiver; wherein the data processing and location service center server comprises: the system comprises a first acquisition module, a processing module, a conversion module and a sending module, wherein the first acquisition module is used for acquiring the measurement value of each reference station in the high-precision ground-based augmentation system to a global navigation satellite system constellation satellite; the processing module is used for analyzing and processing the measured value to obtain high-precision positioning difference data, and the high-precision positioning difference data is used for high-precision positioning; the conversion module is used for converting the high-precision positioning difference data in a protocol format supported by a common precision receiver to obtain positioning difference data identified by the common precision receiver, the common precision receiver is a receiver which does not need to register in high-precision positioning service, and the positioning precision of the common precision receiver is smaller than that of the high-precision receiver; and the sending module is used for sending the positioning differential data identified by the common precision receiver to the common precision receiver.
2. The deformation monitoring multi-source evidential method based on the Beidou meteorological model according to claim 1, wherein the foundation enhancement system further comprises a filtering module, and the filtering module filters fluctuation and noise of position data.
3. The deformation monitoring multi-source evidence printing method based on the Beidou meteorological model as set forth in claim 2, wherein in the step (2): obtaining current meteorological data; and correcting atmospheric ionosphere parameters according to the meteorological data to obtain correction parameters, and calculating the change rule of water vapor in the atmosphere through the correction parameters.
4. The deformation monitoring multi-source evidence printing method based on the Beidou meteorological model as set forth in claim 3, further comprising: and the processor in the ground station of the ground-based augmentation system is used for monitoring the atmospheric ionospheric correction parameters, evaluating the generated atmospheric ionospheric correction parameters in real time and sending the correction parameters to the processor in the ground station.
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| US6067852A (en) * | 1997-08-26 | 2000-05-30 | University Corporation For Atmospheric Research | Method and apparatus using slant-path water delay estimates to correct global positioning satellite survey error |
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| CN103454656A (en) * | 2013-07-26 | 2013-12-18 | 山东华戎信息产业有限公司 | Precision single-point location observation data processing method |
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| CN100437142C (en) * | 2007-07-12 | 2008-11-26 | 北京航空航天大学 | Error separation method based on foundation strength system and foundation strength system |
| CN103471544B (en) * | 2013-09-18 | 2016-04-20 | 柳州天运寰通科技有限公司 | A kind of high precision displacement deformation monitoring application system based on the Big Dipper |
| CN104950320B (en) * | 2015-04-20 | 2021-06-22 | 中国电子科技集团公司第二十研究所 | Method and system for monitoring troposphere correction parameters of foundation enhancement system |
| CN204595246U (en) * | 2015-04-27 | 2015-08-26 | 张京江 | A kind of atmosphere vapour measuring instrument |
| CN105629263B (en) * | 2015-12-21 | 2019-04-02 | 广州中海达卫星导航技术股份有限公司 | A kind of troposphere atmosphere delay estimation error correcting method and correction system |
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|---|---|---|---|---|
| US6067852A (en) * | 1997-08-26 | 2000-05-30 | University Corporation For Atmospheric Research | Method and apparatus using slant-path water delay estimates to correct global positioning satellite survey error |
| CN102331582A (en) * | 2010-05-30 | 2012-01-25 | 天宝导航有限公司 | GNSS atmosphere estimation utilizing combined iron layer filter |
| CN103076616A (en) * | 2013-01-04 | 2013-05-01 | 中国电子科技集团公司第二十二研究所 | Integrated real-time correction device for atmosphere convection layer and ionized layer radio wave refraction error |
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