导航信号功率增强对阵列接收机的影响分析

doi:10.12305/j.issn.1001-506X.2021.09.26

Abstract

Abstract:

In order to analyze the influence of signal power enhancement on array receiver in low orbit navigation enhancement system, a mathematical model of signal propagation and array receiver is given. Based on the model, the anti-jamming performance of the least mean square error algorithm and direct matrix inverse algorithm under the condition of power enhancement is analyzed. According to theoretical analysis and simulation experiment, the influence of enhanced signal on the minimum mean square error is similar to that of direct matrix inversion. When the amount of signal enhancement under 15 dB, array anti-jamming have less effect on the signal. With the further enhancement of signal power, the enhanced signal is identified as interference and suppressed. When the signal to noise ratio of signal is enhanceed to 10 dB, the enhanced signal is suppressed by about 15 dB. The resulte shows that under the condition of the traditional array anti-jamming methods, the enhanced signal power is not the bigger the better. When the signal power is increased by 15 dB, the inflaence on the traditional array anti-jamming is small.

Key words: low orbit navigation enhanced, power enhancement, array receiver, anti-jamming, least mean square error, direct matrix inverse

CLC Number:

TN95

Zukun LU, Feiqiang CHEN, Yifan SUN, Zhe LIU, Long HUANG. Influence analysis of navigation signal power enhancement on array receiver[J]. Systems Engineering and Electronics, 2021, 43(9): 2581-2587.

Figures/Tables 8

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Influence analysis of navigation signal power enhancement on array receiver

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