| INS辅助的PMF-FFT快速捕获算法 |
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| 引用本文： | 汤霞清,程旭维,武萌,高军强.INS辅助的PMF-FFT快速捕获算法[J].火力与指挥控制,2017,42(8). |
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| 作者姓名： | 汤霞清 程旭维 武萌 高军强 |
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| 作者单位： | 装甲兵工程学院,北京,100072 |
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| 摘 要： | 为了快速地捕获卫星信号,研究了部分匹配滤波(Partial Matched Filter,PMF)算法及其参数选择依据。采用惯性导航系统(INS)辅助的PMF-FFT捕获算法,该算法首先利用惯性导航系统信息缩小信号捕获的2维搜索范围;同时,为改善PMF-FFT捕获算法的性能,在PMF过程中采用窗函数加权积分。结果表明,该捕获算法能够大幅减小平均捕获时间;且加窗后的PMF-FFT算法捕获性能更优。
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| 关 键 词： | 信号捕获 惯性导航辅助 部分匹配滤波 快速傅里叶变换 |
Research on Fast Acquisition Algorithm Based on PMF-FFT with INS-Aided |
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| TANG Xia-qing,CHENG Xu-wei,WU Meng,GAO Jun-qiang.Research on Fast Acquisition Algorithm Based on PMF-FFT with INS-Aided[J].Fire Control & Command Control,2017,42(8). |
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| Authors: | TANG Xia-qing CHENG Xu-wei WU Meng GAO Jun-qiang |
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| Abstract: | Aimed to acquire the GNSS signal faster,PMF algorithm and its parameters setting are analyzed. PMF-FFT algorithm with INS-aiding is adopted,which narrows the 2-D search range substantially. To improve acquiring performance of the algorithm,the weighted means by Window function is employed,then,the algorithm performance is analyzed. Experimental results show that the method with INS-aiding greatly decrease average acquisition time. The PMF-FFT algorithm with the Windows is more effective than traditional algorithms. |
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| Keywords: | signal acquisition INS-aided partial matched filter FFT |
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