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Method used for estimating direction of arrival of deception jamming through satellite navigation receiver

A technology of deceptive interference and direction of arrival, which is applied in the field of estimation of direction of arrival of deceptive interference by satellite navigation receivers, achieving the effect of low computational complexity

Inactive Publication Date: 2015-03-25
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no anti-spoofing technology that specializes in reverse positioning. Due to the actual combat capability in the field of anti-spoofing, it will attract more attention in future research.

Method used

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  • Method used for estimating direction of arrival of deception jamming through satellite navigation receiver
  • Method used for estimating direction of arrival of deception jamming through satellite navigation receiver
  • Method used for estimating direction of arrival of deception jamming through satellite navigation receiver

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Embodiment Construction

[0016] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0017] Usually, deceptive interference sources continuously randomly select and send C / A codes of different navigation satellites. This interference signal is very likely to have a strong correlation with the navigation satellite signal, so that the receiver is easily misled and tricked, thus giving wrong positioning information. When deceptive interference is found, in order to warn or even destroy the interference source and achieve the purpose of physically eliminating the deceptive interference, the present invention proposes a method for estimating the incoming wave direction of the deceptive interference. By calculating the difference between the covariance matrix of the array received signal and the cross-correlation matrix between the array received signal vector and its own delayed signal vector, the covariance matrix with only interference an...

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Abstract

The invention discloses a method used for estimating the direction of arrival of deception jamming through a satellite navigation receiver. A covariance matrix only involving jamming and noise is obtained by working out the difference between an array received signal covariance matrix and a cross correlation matrix of an array received data vector and a delay signal vector of the array received data vector, and therefore the direction of arrival of deception jamming is estimated. According to the method, the directions of arrival of multiple types of deception jamming can be accurately estimated, and computation complexity is low.

Description

technical field [0001] The invention belongs to the field of array signal processing, and in particular relates to a method for estimating the incoming wave direction of deceptive interference by a satellite navigation receiver. Background technique [0002] At present, the anti-spoofing system can be divided into the following three links: deception detection, deception elimination and reverse positioning. The purpose of spoofing detection is to find spoofing interference, and it cannot take countermeasures against spoofing interference; spoofing elimination is to reduce or eliminate the influence of spoofing interference and restore the normal navigation and positioning function of the victim receiver under the condition of known spoofing interference; reverse positioning is When spoofing is found, the interference source is warned or even destroyed to achieve the purpose of physically eliminating spoofing interference. At present, there is no anti-spoofing technology tha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/13
CPCG01S19/215
Inventor 王纯于军琪董惠赵素文
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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