Satellite navigation anti-interference apparatus based on memory matrix quasi inversion and anti-interference method therefor

Abstract

The invention belongs to the field of the anti-interference research of a satellite navigation receiver, and especially relates to a satellite navigation anti-interference apparatus based on the memory matrix quasi inversion and an anti-interference method therefor. The satellite navigation anti-interference apparatus based on the memory matrix quasi inversion includes an array antenna module, a radio frequency channel module, an A / D converter module, a digital down conversion module, a memory matrix calculation module, a memory matrix quasi inversion module, a digital wave beam formation module, a digital up conversion module, and a D / A converter module. The invention provides an algorithm of the memory matrix quasi inversion, and improves the operation speed and precision by using the floating number operation. The weight is more accurate, and a Signal to Interference plus Noise Ratio (SINR) is improved. When the interference signal types, the interference signal strength, and the interference signal orientation change, the satellite navigation anti-interference apparatus based on the memory matrix quasi inversion and the anti-interference method therefor can fast and adaptively calculate the weight and inhibit the interference signals.

Description

technical field [0001] The invention belongs to the field of anti-jamming research of satellite navigation receivers, and in particular relates to a satellite navigation anti-jamming device and an anti-jamming method based on memory matrix quasi-inversion. Background technique [0002] In the 1960s, a major breakthrough occurred in navigation technology, and satellite navigation, as a very important navigation technology, began to be gradually applied in civilian and military fields. The satellite navigation system is a brand-new satellite-based radio navigation system. It not only has global, all-weather and continuous three-dimensional positioning capabilities, but also can accurately measure the speed and attitude of various military and civilian moving carriers in real time and provide precise timing. [0003] In terms of civilian use, it is widely used in the navigation of ocean, land and air transportation. In terms of military applications, satellite navigation has a...

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Problems solved by technology

[0013] The purpose of the present invention is to overcome the deficiencies in anti-jamming of existing satellite navigation receivers, and focus on solving the technical problems of inaccurate weight estimation and poor anti-jamming effect caused by matrix inversion, which is not conducive to engineering implementation and calculation accuracy. A satellite navigation anti-jamming device based on memory matrix quasi-inversion, which realizes fast and high-precision processing of sampled data and achieves better anti-jamming effect

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