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Satellite navigation time service receiver anti-spoofing method

A satellite navigation and receiver technology, applied in the field of anti-spoofing, can solve the problems of no anti-spoofing function, hidden dangers, etc., and achieve the effects of increased power consumption, simple method, and improved detection probability

Inactive Publication Date: 2015-12-16
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the satellite navigation timing receivers on the market basically do not have anti-spoofing functions, and there are a lot of security risks. Therefore, the application of anti-spoofing technology for timing receivers is imminent

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  • Satellite navigation time service receiver anti-spoofing method
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  • Satellite navigation time service receiver anti-spoofing method

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Embodiment Construction

[0042] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0043] Spoofing signals can be divided into two types according to the generation method: generation type and forwarding type. No matter what spoofing interference method is used to achieve its purpose, its whereabouts will eventually be exposed in two aspects: 1. Satellite time; 2. Satellite position. The change of the satellite time is reflected in the pseudo-range, and the change of the satellite position will affect the calculation of the distance between the satellite and the ground; the timing receiver is especially for civil use, and the application scenario has its own particularity. , often appear only after the system using the timing receiver is activated. Therefore, when spoofing in...

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Abstract

The invention discloses a satellite navigation time service receiver anti-spoofing method comprising a step 1 of enabling a time service receiver to track a new satellite signal after being powered on and initially positioned, a step 2 of determining the authenticity of a new satellite update almanac; a step 3 of determining the authenticity of a new satellite update ephemeris; and a step 4 of determining the authenticity of a new satellite measured pseudo range. Used in a spoofing interference environment, the method performs anti-spoofing at an information layer by using prior information and improves detection probability of deception jamming.

Description

technical field [0001] The invention relates to an anti-spoofing method, in particular to an anti-spoofing method for a satellite navigation timing receiver. Background technique [0002] With the development of satellite navigation technology and the continuous expansion of its application fields, it has had a major impact on the economic and social structures of the world today. The use of satellite timing can achieve accuracy that is beyond the reach of traditional measurement and control methods, and the cost is low. Satellite timing synchronization technology has been widely used in industries such as electric power, transportation, communication, banking and finance. However, when a resource becomes more and more important to human life, crimes and malicious acts against the resource will appear, and the spoofing interference disguised as a real signal will cause the timing receiver to generate the wrong position and time, thereby affecting various services of normal ...

Claims

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Application Information

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IPC IPC(8): G01S19/21
CPCG01S19/215
Inventor 葛红舞何迎利马涛张宇新
Owner STATE GRID CORP OF CHINA
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