Satellite navigation interference prevention method for seven-array-element antenna

A satellite navigation and array element technology, applied in the field of anti-jamming, can solve the problems of high computational complexity, poor real-time performance, and large data storage, and achieve the effects of improving convergence speed, eliminating noise increase, and increasing dynamic input range.

Pending Publication Date: 2019-01-29
BEIJING INST OF REMOTE SENSING EQUIP
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Problems solved by technology

[0003] The purpose of the present invention is to provide a seven-element satellite navigation anti-jamming method, which adopts self-adaptive iterative operation to solve the problems of large data storage, high computational complexity and poor real-time performance in previous anti-jamming methods, and at the same time improves the convergence speed and reduces the steady state error

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  • Satellite navigation interference prevention method for seven-array-element antenna
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  • Satellite navigation interference prevention method for seven-array-element antenna

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Embodiment Construction

[0058] The specific steps of a seven-array element satellite navigation anti-jamming method are:

[0059] The first step is to build a seven-array satellite navigation anti-jamming system

[0060] The seven-element satellite navigation anti-jamming system includes: anti-jamming signal processing model establishment module 1, autocorrelation matrix calculation module 2, optimal equation construction module 3, adaptive iterative recursion module 4 and weight update module 5.

[0061] The function of the anti-jamming signal processing model establishment module 1 is to establish a seven-element anti-jamming signal processing model and obtain an output expression of the anti-jamming processing.

[0062] The function of the autocorrelation matrix obtaining module 2 is: to obtain the input signal autocorrelation matrix;

[0063] The function of the optimal equation building block 3 is to construct the optimal equation by using the linearly constrained minimum variance criterion;

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Abstract

The invention provides a satellite navigation interference prevention method for a seven-array-element antenna. A satellite navigation interference prevention system of a seven-array-element antenna is built. The built system includes an anti-interference signal processing model building module (1), an autocorrelation matrix calculation module (2) ), an optimal equation construction module (3), anadaptive iterative recursive module (4), and a weight updating module (5). According to the invention, with the adaptive iterative operation, the inverse operation of the input signal autocorrelationmatrix is avoided, so that that the computing load is reduced and a problem that the convergence speed and steady-state error of the traditional iterative algorithm cannot be satisfied at the same time is solved. The method is implemented clearly; the formula calculation is simple; the real-time calculation is realized; and the requirement of engineering application is met.

Description

technical field [0001] The invention relates to an anti-interference method, in particular to an anti-interference method for a seven-array element satellite navigation system. Background technique [0002] In the satellite navigation system, in order to counter the enemy's artificial interference and improve the precision strike capability of military weapons, it is necessary to add an interference suppression module at the front end of the satellite navigation system. There are two methods in the past: one is to use the airspace adaptive processing method to automatically adjust the shape of the antenna pattern, and directly perform effective zeroing suppression in the interference direction. This method is limited by the degree of freedom. When there is a large amount of interference When , more antenna arrays are needed, and the volume is too large; the other adopts the space-time adaptive processing method, which can suppress a large amount of interference by using time...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/21
CPCG01S19/21
Inventor 袁鑫吴荣刚
Owner BEIJING INST OF REMOTE SENSING EQUIP
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