| 空时自适应处理中卫星信号互相关峰值偏移分析 |
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| 引用本文： | 郭文飞,郑建生,张提升,林炳章.空时自适应处理中卫星信号互相关峰值偏移分析[J].武汉大学学报(信息科学版),2011,36(9):1077-1080. |
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| 作者姓名： | 郭文飞 郑建生 张提升 林炳章 |
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| 作者单位： | 武汉大学电子信息学院,武汉市珞喻路129号,430079 |
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| 基金项目： | 中央高校基本科研业务费专项资金资助项目(20102120101000120,20106180201000159) |
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| 摘 要： | 将空时自适应处理建模为一个有限冲激响应（FIR）滤波器,分析了空时自适应处理对导航信号的码相位偏移。该滤波器的响应同时取决于信号的频率和入射方向,将滤波器的输出与本地序列进行相关,可求得互相关峰值的偏移量。以GPS中的C/A码为例,针对空时自适应处理中典型的最小方差（MV）和最小方差无失真响应（MVDR）准则进行了仿真实验。结果表明,干扰从低仰角入射时影响范围更大,而MV准则在抑制干扰的同时,带来的互相关峰值偏移较MVDR更加明显。
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| 关 键 词： | GPS 干扰抑制 互相关峰值 最小方差 最小方差无失真响应 |
Analysis Method for Satellite Signal Cross-Correlation Peak Bias in Space Time Adaptive Processing |
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| GUO Wenfei ZHENG Jiansheng ZHANG Tisheng LIN Bingzhang.Analysis Method for Satellite Signal Cross-Correlation Peak Bias in Space Time Adaptive Processing[J].Geomatics and Information Science of Wuhan University,2011,36(9):1077-1080. |
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| Authors: | GUO Wenfei ZHENG Jiansheng ZHANG Tisheng LIN Bingzhang |
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| Institution: | GUO Wenfei1 ZHENG Jiansheng1 ZHANG Tisheng1 LIN Bingzhang1(1 School of Electronic Information,Wuhan University,129 Luoyu Road,Wuhan 430079,China) |
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| Abstract: | In the global navigation satellite system(GNSS),space-time adaptive processor(STAP) technology has been the chief method for interference suppression.However,the processor can induce different cross-correlation peak biases to different satellite signals,which could degrade the positioning performance.In order to evaluate the bias induced by STAP algorithm and thus provide theoretic guidance for selecting satellites subsequently,the space-time adaptive processor is modeled to a FIR filter structure,whose res... |
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| Keywords: | GPS interference suppression cross-correlation peak MV MVDR |
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