Anti-jamming Method of Satellite Navigation Based on Synthetic Aperture

2022 IEEE 5th International Conference on Electronic Information and Communication Technology (ICEICT) Pub Date : 2022-08-21 DOI:10.1109/ICEICT55736.2022.9909188

Chuang Han, Shuozhe Li, Y. Gong, Zhaolin Zhang, Yuexian Wang, Ling Wang

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引用次数: 1

Abstract

A new method to extend the satellite navigation anti-jamming degree of freedom based on synthetic aperture is proposed. In this paper, by means of using the motion characteristics of single antenna, the time-domain sampling of signal is converted into spatial sampling and virtual array is synthesized. When the number of virtual elements in the array is limited, the number of interferences which can be suppressed can be greatly increased, which can solve the problem that the freedom of anti-interference is limited by the number of elements. Combined with the optimal anti-jamming weighting criterion, the space-frequency anti-jamming algorithm is used for anti-jamming processing, and the covariance matrix broadening algorithm is used to optimize the anti-jamming processing results, which solves the problem of how to deal with robust anti-jamming under the condition of unfixed anti-jamming degree of freedom. The simulation results verify the effectiveness of the method.

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基于合成孔径的卫星导航抗干扰方法

提出了一种基于合成孔径扩展卫星导航抗干扰自由度的新方法。本文利用单天线的运动特性，将信号的时域采样转换为空间采样，合成虚拟阵列。当阵列中的虚拟元素数量有限时，可以抑制的干扰数量可以大大增加，可以解决抗干扰自由度受元素数量限制的问题。结合最优抗干扰加权准则，采用空频抗干扰算法进行抗干扰处理，采用协方差矩阵展宽算法对抗干扰处理结果进行优化，解决了在抗干扰自由度不固定的情况下如何处理鲁棒抗干扰的问题。仿真结果验证了该方法的有效性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

2022 IEEE 5th International Conference on Electronic Information and Communication Technology (ICEICT)

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