CN106850958A - A kind of positional information in mobile phone position service forges recognition methods and device - Google Patents

Abstract

The present invention provides a method and device for identifying forgery of location information in mobile phone location services, comprising: a step or a device for obtaining information collected by a sensor on a mobile phone; and a step or a device for processing the obtained information to obtain reference data containing the spatiotemporal physical quantity of the mobile phone or device; a step or device for obtaining data of GNSS positioning spatiotemporal physical quantity in the mobile phone location service; if it is judged that the mobile phone spatiotemporal physical quantity in the reference data is inconsistent with the GNSS positioning spatiotemporal physical quantity, then determine that there is a step in which the location information is forged in the mobile phone location service or device. The technical scheme provided by the present invention realizes the identification of whether the position information in the mobile phone location service is forged by judging whether the space-time physical quantity of the mobile phone in the reference data is consistent with the space-time physical quantity of the GNSS positioning.

Description

Method and device for identifying forgery of location information in mobile phone location service

technical field

The invention relates to the field of positioning technology, in particular to a method and device for identifying forgery of position information in mobile phone position services.

Background technique

Location Based Service (LBS, Location Based Service) for mobile phones is to obtain the longitude and latitude coordinates of the mobile phone user's location through the GNSS (Global Navigation Satellite System) navigation sensor of the mobile phone and the network of mobile communication operators, and provide corresponding services for users with the support of the electronic map platform. A value-added service.

With the popularization of smartphones with built-in GNSS navigation sensors, more and more business models based on mobile phone location services are developing rapidly. What follows is that the location information in location services is forged through virtual user locations, resulting in the existence of The problem of getting fake location information.

Contents of the invention

In order to solve the above technical problems, the present invention provides a method and device for identifying forgery of location information in mobile phone location services, which realizes the identification of whether there is forged location information in mobile phone location services.

To achieve the above object, the present invention provides the following technical solutions:

On the one hand, the present invention provides a method for identifying forgery of location information in mobile phone location services, the method comprising the following steps:

Obtain information collected by sensors on mobile phones;

Process the obtained information to obtain the benchmark data containing the spatio-temporal physical quantity of the mobile phone;

Obtain the data of GNSS positioning spatio-temporal physical quantity in the mobile location service;

If it is judged that the spatiotemporal physical quantity of the mobile phone in the reference data is inconsistent with the GNSS positioning spatiotemporal physical quantity data, it is determined that the location information in the mobile phone location service has been falsified.

Further, the acquisition of information collected by sensors on the mobile phone includes:

The acquired information is provided with a time label of the information collection time.

Further, the processing of the acquired information obtains the reference data containing the spatiotemporal physical quantity of the mobile phone, including:

Perform time synchronization processing, abnormal information elimination processing and sensor collection information conversion physical quantity processing on the acquired information.

Further, the step of obtaining the data of GNSS positioning spatiotemporal physical quantities in the mobile location service also includes:

pairing and saving the reference data and the data of the GNSS positioning space-time physical quantity.

Further, a pattern recognition method is used to judge whether the spatio-temporal physical quantity of the mobile phone in the reference data is consistent with the GNSS positioning spatio-temporal physical quantity.

Further, the space-time physical quantities include: attitude parameters, velocity parameters, position parameters, time parameters, distance parameters and direction parameters.

In another aspect, the present invention provides a device for identifying forgery of location information in mobile phone location services, the device comprising:

The collection module is used to obtain the information collected by the sensor on the mobile phone;

The data processing module is used to process the acquired information to obtain the reference data containing the spatiotemporal physical quantity of the mobile phone;

The location service acquisition module is used to obtain the data of GNSS positioning space-time physical quantity in the mobile phone location service;

The judging module is used to determine that the location information in the mobile phone location service has been forged if it is judged that the spatiotemporal physical quantity of the mobile phone in the reference data is inconsistent with the GNSS positioning spatiotemporal physical quantity data.

Further, the device also includes:

A storage unit, configured to pair and save the reference data and the data of the GNSS positioning space-time physical quantity.

Further, the collection module includes:

The tag unit is configured to set a time tag of information collection time on the obtained information.

Further, the data processing module includes:

The processing unit is used to perform time synchronization processing, abnormal information elimination processing, and sensor collection information conversion physical quantity processing on the acquired information.

It can be seen from the above technical solution that the method and device for identifying forgery of location information in mobile phone location services provided by the present invention realizes the identification of whether the mobile phone location service has There is location information being falsified.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are For some embodiments of the present invention, those skilled in the art can also obtain other drawings based on these drawings without any creative work.

Fig. 1 is a schematic flow chart of a location information forgery identification method in a mobile phone location service provided by the present invention;

2 is a schematic diagram of a mobile phone coordinate system in a method for identifying forgery of location information in a mobile phone location service provided by the present invention;

Fig. 3 is a schematic diagram of the direction angle physical quantity output by the MEMS sensor and the GNSS sensor in the location information forgery identification method in a mobile phone location service provided by the present invention;

Fig. 4 is a schematic diagram of the velocity physical quantity output by the MEMS sensor and the GNSS sensor in a location information forgery identification method in a mobile phone location service provided by the present invention;

Fig. 5 is a schematic structural diagram of a location information forgery identification device in a mobile phone location service provided by the present invention.

detailed description

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

With the popularization of smart phones with built-in GNSS navigation sensors, more and more business models based on mobile phone location services are developing rapidly, such as mobile phone taxi applications and mobile food delivery applications; The location information in the location service is forged, resulting in the problem of obtaining false location information. In order to solve the above technical problems, the present invention provides a method and device for identifying forgery of location information in mobile phone location services.

Embodiment 1 of the present invention provides a method for identifying forgery of location information in mobile phone location services. Referring to FIG. 1, the identification method includes:

S101: Obtain information collected by sensors on the mobile phone;

In this step, the sensors on the mobile phone are MEMS (Microelectro Mechanical Systems) and GNSS (Global Navigation Satellite System). MEMS sensors include: gyroscopes, accelerometers and magnetometers, which can provide information such as mobile phone speed and direction, and GNSS sensors can also provide information such as mobile phone speed and direction. The above information can be sent to the background server of the location service provider through the communication module of the mobile phone, and can also be stored locally in the mobile phone for processing.

S102: Process the acquired information to obtain benchmark data containing the spatiotemporal physical quantity of the mobile phone;

In this step, the information collected by the mobile phone sensor MEMS is obtained, and the time stamp of the data collection time is stamped, and then sent to the background server of the location service provider through the mobile phone communication module or processed locally on the mobile phone.

The local processor or background server of the mobile phone preprocesses the collected sensor information of the mobile phone, including: time synchronization, outlier elimination, etc. After the preprocessed mobile phone sensor information is fused and converted, it becomes a unified spatiotemporal information physical quantity as the reference data, including attitude, speed, position, time, distance and direction, etc.

For example: gyroscopes and magnetometers can be fused and converted into attitude and direction information of mobile phones; accelerometers can be converted into speed and position information after coordinate transformation and integration; communication information can be converted into position and distance information; network information acquired by communication modules Ephemeris data can be converted to time information.

S103: Obtain the data of the space-time physical quantity of GNSS positioning in the mobile phone location service;

In this step, the positioning spatiotemporal physical quantity data in the mobile phone location service is the data output by the GNSS navigation sensor, and the reference data of the above S102 and the GNSS positioning spatiotemporal physical quantity data are paired and stored.

S104: If it is judged that the spatiotemporal physical quantity of the mobile phone in the reference data is inconsistent with the GNSS positioning spatiotemporal physical quantity data, it is determined that the location information in the mobile phone location service has been falsified.

In this step, the local processor or background server of the mobile phone performs data pairing on the unified spatiotemporal information physical quantities converted in the above steps, and uses the pattern recognition method to judge whether the spatiotemporal physical quantities of the mobile phone in the reference data are consistent with the GNSS positioning spatiotemporal physical quantities.

As can be seen from the above description, the present invention provides a method for identifying forgery of location information in mobile phone location services, which realizes judging whether there is location forgery in the mobile phone LBS application; in addition, the present invention performs feature extraction, processing and processing on the spatio-temporal information in the mobile phone sensor. Save, it is very convenient to trace the process of forgery.

A kind of identification method provided by the present invention is specifically illustrated, referring to FIG. 2, and the present invention is applied to a smart phone with sensors such as MEMS (including gyroscope, accelerometer, magnetometer), GPS and 4G communication module. Place the smartphone horizontally in the car, the y-axis direction is consistent with the vehicle's traveling direction, and the z-axis is vertically upward, driving 15km.

There is a data acquisition program running on the mobile phone. This program collects MEMS and GPS sensor information on the mobile phone, and stamps the time stamp of the data collection moment, and then sends it to the background server of the location service provider through the 4G wireless network (here only the background processing mode is used as the embodiment of the present invention, and the mobile terminal processing Similarly).

The background server preprocesses the collected MEMS and GPS sensor information, including: time synchronization, outlier elimination, etc. The preprocessed MEMS gyroscope and magnetometer information of the mobile phone can be fused and converted into the physical quantity of the orientation angle of the mobile phone, which corresponds to the physical quantity of the orientation angle output by the GPS. See Figure 3. After the coordinate transformation and integration of the MEMS accelerometer of the mobile phone, It can be converted into the physical quantity of mobile phone speed, corresponding to the physical quantity of speed output by GPS, see Figure 4. At this time, the output information of the MEMS sensor of the mobile phone and the output information of the GPS sensor are jointly converted into a unified space-time physical quantity-direction and speed.

The background server pairs and compares the unified spatio-temporal information physical quantities output by the above sensors. Finally, the pattern recognition method is used to distinguish the two modes of the consistent and inconsistent physical quantities of time and space, and then judge whether there is forgery of location information. For example: when there is no falsification of mobile phone location information, see Figure 3 and Figure 4. At this time, the spatiotemporal physical quantity information of the mobile phone sensor is consistent, and the peak times of physical quantities such as direction and speed output by GPS and MEMS are close to each other. Finally, the KS test (Kolmogorov-Smirnov test) can be used to judge that the probability distribution of the time peak value of the space-time physical quantity output by MEMS and GPS is consistent.

Embodiment 2 of the present invention provides a device for identifying forgery of location information in mobile phone location services, as shown in FIG. 5 , the identification device includes:

Acquisition module 10, for obtaining the information collected by the sensor on the mobile phone;

The data processing module 20 is used to process the acquired information to obtain reference data containing the spatiotemporal physical quantity of the mobile phone;

The location service obtaining module 30 is used to obtain the data of GNSS positioning space-time physical quantity in the mobile phone location service;

The judging module 40 is configured to determine that the location information in the mobile phone location service has been falsified if it is judged that the spatiotemporal physical quantity of the mobile phone in the reference data is inconsistent with the GNSS positioning spatiotemporal physical quantity.

Further, the device also includes:

A storage unit, configured to pair and save the reference data and the data of the GNSS positioning physical quantity.

Further, the collection module includes:

The tag unit is configured to set a time tag of information collection time on the obtained information.

Further, the data processing module includes:

The processing unit is used to perform time synchronization processing, abnormal information elimination processing, and sensor collection information conversion physical quantity processing on the acquired information.

It can be seen from the above description that the present invention provides a device for identifying forgery of location information in mobile phone location services. By comparing the consistency of the spatiotemporal physical quantity of the mobile phone sensor with the spatiotemporal physical quantity information provided by the LBS, it is possible to determine whether there is a location forgery in the mobile phone LBS service. And the information collected by the mobile phone sensor is saved, which can easily trace the process of forgery.

The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be described in the foregoing embodiments Modifications are made to the recorded technical solutions, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (10)

1. a location information forgery identification method in mobile phone location service, it is characterized in that, described method comprises the steps: Obtain information collected by sensors on mobile phones; Process the obtained information to obtain the benchmark data containing the spatio-temporal physical quantity of the mobile phone; Obtain the data of GNSS positioning spatio-temporal physical quantity in the mobile location service; If it is judged that the spatiotemporal physical quantity of the mobile phone in the reference data is inconsistent with the GNSS positioning spatiotemporal physical quantity data, it is determined that the location information in the mobile phone location service has been falsified. 2. The method according to claim 1, wherein said obtaining information collected by sensors on the mobile phone comprises: The acquired information is provided with a time label of the information collection time. 3. The method according to claim 2, wherein said processing the acquired information to obtain reference data containing the spatiotemporal physical quantity of the mobile phone comprises: Perform time synchronization processing, abnormal information elimination processing and sensor collection information conversion physical quantity processing on the acquired information. 4. The method according to claim 3, characterized in that, the step of obtaining the data of GNSS positioning spatio-temporal physical quantity in the mobile phone location service also includes afterwards: pairing and saving the reference data and the data of the GNSS positioning space-time physical quantity. 5. The method according to claim 4, wherein a pattern recognition method is used to judge whether the spatiotemporal physical quantity of the mobile phone in the reference data is consistent with the GNSS positioning spatiotemporal physical quantity. 6 . The method according to claim 1 , wherein the spatiotemporal physical quantities include: attitude parameters, velocity parameters, position parameters, time parameters, distance parameters and direction parameters. 7. A device for identifying counterfeit location information in mobile phone location services, characterized in that the device includes: The collection module is used to obtain the information collected by the sensor on the mobile phone; The data processing module is used to process the acquired information to obtain the benchmark data containing the spatiotemporal physical quantity of the mobile phone; The location service acquisition module is used to obtain the data of GNSS positioning space-time physical quantity in the mobile phone location service; The judging module is used to determine that the location information in the mobile phone location service has been forged if it is judged that the spatiotemporal physical quantity of the mobile phone in the reference data is inconsistent with the GNSS positioning spatiotemporal physical quantity data. 8. The device according to claim 7, further comprising: A storage unit, configured to pair and save the reference data and the data of the GNSS positioning space-time physical quantity. 9. The device according to claim 8, wherein the acquisition module comprises: The tag unit is configured to set a time tag of the information collection time on the obtained information. 10. The device according to claim 9, wherein the data processing module comprises: The processing unit is used to perform time synchronization processing, abnormal information elimination processing, and sensor collection information conversion physical quantity processing on the acquired information.