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Satellite navigation anti-deception method and device

A satellite navigation and anti-spoofing technology, which is applied in the direction of measuring devices, satellite radio beacon positioning systems, instruments, etc., can solve problems such as spoofing and interference, and achieve the effect of high upgrade cost, complex algorithm and high versatility

Pending Publication Date: 2022-03-25
NO 20 RES INST OF CHINA ELECTRONICS TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] the civil signal structure of satellite navigation systems is public, making them very vulnerable to corresponding spoofing

Method used

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  • Satellite navigation anti-deception method and device

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Embodiment Construction

[0039] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0040] The steps of the satellite navigation anti-spoofing method of the present invention are as follows:

[0041] Step 1, set the receivers 103 and 203 to be separated by a fixed distance, start the initial positioning of the satellite navigation receivers 103 and 203, and obtain positioning information;

[0042] In step 2, the control part 104 of the receiver 103 and the control part 204 of the receiver 203 respectively send the positioning information to the storage parts 105 and 205 for storage after obtaining the positioning information.

[0043] The specific process is as follows:

[0044] A1: Calibrate the difference beam antennas 101 and 201 respectively, and calibrate the orientation of the zero point beam relative to the antenna structure (only need to be performed once);

[0045] A2: Make circular angle marks on the casings of the antenna ...

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PUM

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Abstract

The invention provides a satellite navigation anti-deception method and device, and the method comprises the steps: receiving a satellite navigation signal, obtaining positioning information, storing the positioning information, carrying out the capturing, tracking and resolving through a difference beam antenna, transmitting the resolved positioning information to a storage part for storage, reading the positioning information from the storage part, comparing the positioning information, and carrying out the recognition of the positioning information. And a satellite navigation deception signal is judged, the difference value between the calculated spacing distance and the actual spacing distance is smaller than a set threshold value, the deception signal is suppressed by using the directivity of a difference beam antenna, and the purpose of anti-deception normal positioning is achieved. The method is easy to implement, and the problems that an algorithm needed by an existing application is complex and the design algorithm cost is high are solved; the anti-cheating purpose can be achieved only by replacing the antenna and upgrading the program without changing the existing satellite navigation receiver terminals deployed and applied in a large scale, and the problem that the upgrading cost is high for adding the anti-cheating function of the existing satellite navigation equipment is solved.

Description

technical field [0001] The invention relates to the field of fraud signal detection, in particular to a satellite navigation anti-spoofing method and device. Background technique [0002] The global navigation satellite system is a high-tech field that has long been concerned by the world. Its work has the excellent characteristics of not being restricted by time, weather and climate, and it can provide users with navigation information in real time and continuously. The navigation information provided has high positioning accuracy. At the same time, it provides users with additional functions such as speed measurement and timing service. The global navigation satellite system is more and more widely used in people's production and life, and the military field is also increasingly dependent on the global navigation satellite system. [0003] Qianxun location service belongs to the network RTK differential data service and is also the Beidou ground-based augmentation system....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/21G01S19/01
CPCG01S19/015G01S19/21
Inventor 舒钰丁华钰张凌飞张帆张文华李帅张骅陈尔钐
Owner NO 20 RES INST OF CHINA ELECTRONICS TECH GRP
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