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Anti-cheating interference method based on bionic combined navigation assistance

A deceptive jamming and integrated navigation technology, which is applied in the field of anti-deceptive jamming, can solve the problems of poor auxiliary reliability of antenna array elements, etc., and achieve the effects of expanding applicability, improving system reliability, and strong reliability

Active Publication Date: 2018-07-03
BEIJING SATELLITE INFORMATION ENG RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The problem to be solved by the invention is to overcome the shortcomings of traditional satellite navigation anti-spoofing interference, such as multiple antenna array elements, complex algorithms, and poor reliability of auxiliary assistance at a single level of satellite signal processing, to complete the detection of deceptive interference

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  • Anti-cheating interference method based on bionic combined navigation assistance
  • Anti-cheating interference method based on bionic combined navigation assistance
  • Anti-cheating interference method based on bionic combined navigation assistance

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Embodiment Construction

[0033] Hereinafter, the present invention will be described in detail based on the drawings.

[0034] Such as figure 1 As shown, the present invention proposes an anti-spoofing jamming method based on bionic integrated navigation assistance. The system based on the method may include an integrated navigation information extraction module, an auxiliary baseband processing module, an auxiliary signal processing module, and an auxiliary positioning solution module. Use the navigation information extraction module to extract the navigation information provided by the bionic integrated navigation, and assist the GNSS navigation to resist deceptive interference. Specifically, the method of the present invention comprises the following steps:

[0035] Step 1. First, use the navigation information extraction module to extract the navigation information provided by the bionic integrated navigation. The principle is as figure 2 As shown, the carrier navigation information obtained i...

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Abstract

The invention provides an anti-cheating interference method based on bionic combined navigation assistance; the method comprises the following steps: using bionic combined navigation to obtain carriernavigation information in real time through multi-source data fusion, combining said information with a satellite ephemeris in a satellite navigation message, and calculating to obtain anti-interference detection auxiliary information; carrying out cheating interference detection on a GNSS baseband signal processing portion, detecting, identifying and removing cheating interference signals; detecting message time delays on a GNSS information processing portion, detecting whether regenerative cheating interferences exist in the cheating interference or not; carrying out cheating detection again on a GNSS positioning resolving portion, and detecting, identifying and removing cheating interference signals. The method can obtain navigation information without being affected by external environments, uses the bionic combined navigation assistance information to effectively determine whether cheating interference signals exist or not, thus detecting and preventing cheating interferences, enlarging the suitability of an anti- cheating interference algorithm, and improving the system reliability.

Description

technical field [0001] The invention belongs to the technical field of satellite applications, and relates to an anti-deception interference method based on bionic integrated navigation assistance, which can be used for normal acquisition and tracking of satellite signals in complex interference environments. Background technique [0002] Due to the complex electromagnetic interference environment outside, the satellite navigation system itself is easily affected by various types of radio frequency interference. Especially in electronic military countermeasures, targeted jamming methods have a greater impact on navigation receivers. At present, deceptive jamming has gradually become the main threat in the field of satellite navigation. Spoofing interference is to make the receiver under the seemingly normal working conditions, let the false satellite signal preferentially control the tracking loop of the navigation receiver, let the receiver lock the wrong satellite signal ...

Claims

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Application Information

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IPC IPC(8): G01S19/21
CPCG01S19/21G01S19/215
Inventor 郝晓明李春颖车欢刘金山刘骁
Owner BEIJING SATELLITE INFORMATION ENG RES INST
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