频域空时域级联导航抗干扰技术研究

徐娟; 姚如贵; 陈赟; 王伶; 张兆林

doi:10.15892/j.cnki.djzdxb.2015.02.035

2015 , Vol. 35 >Issue 2: 137 - 140,144

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2015.02.035

摘要

卫星导航接收机接收到的卫星信号非常微弱,极易受到外界的干扰,需要采用抗干扰技术。联合域抗干扰技术因其自由度高、抗干扰效果好,广泛应用于卫星导航接收机中。从联合域角度出发,结合频域滤波算法与空时自适应阵列处理技术,设计了一种频域空时域级联导航抗干扰技术,可以有效抑制卫星导航中复杂多变的干扰。仿真结果验证了所提抗干扰技术的有效性,及其在相干干扰情况下的优越性。

关键词： 卫星导航; 抗干扰; 频域空时域级联; 迭代门限; 相干干扰

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徐娟 , 姚如贵 , 陈赟 , 王伶 , 张兆林 . 频域空时域级联导航抗干扰技术研究[J]. 弹箭与制导学报, 2015 , 35(2) : 137 -140,144 . DOI: 10.15892/j.cnki.djzdxb.2015.02.035

Abstract

avigation signal arrives at receiver with low power, and is highly susceptible to intentional or unintentional interference. Therefore, anti-jamming technique has become essential satellite navigation receivers. Due to its high degree of freedom and effectiveness, multidomain joint processing is widely used. To deal with the complex interference, a cascaded frequency and spatial-time domain anti-jamming technique proposed based on iterative threshold anti-jamming technique on frequency domain and adaptive anti-jamming technique on spatial-time domain. The simulation results validate effectiveness and superiority of our proposed multi-domain anti-jamming technique in the complex interference scenario.

Key words： satellite navigation; anti-jamming; cascaded frequency and spatial-time domain; iterative threshold; coherent interference

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