PMF-FFT捕获算法部分匹配滤波器长度选取研究  

Research on the Length Selection of Partial Matched Filter of PMF-FFT Acquisition Algorithm

作　　者：黄云青 尚勇[2] 白森[1] 

机构地区：[1]中国空空导弹研究院,河南洛阳471009 [2]中国民航飞行学院洛阳分院,河南洛阳471009

出　　处：《航空兵器》2015年第5期46-51,共6页Aero Weaponry

摘　　要：高动态环境下具有较大的多普勒频移,不利于信号的快速捕获。基于PMF-FFT的快速捕获算法利用部分匹配滤波器结合FFT运算的方法可实现扩频信号的快速捕获,大大减少捕获时间,具有广泛的应用价值。本文通过建立数学模型,详细分析了PMF-FFT算法的特性,确定了部分匹配滤波器长度的影响因素和设计准则,为算法的实现解决了首要问题。It is not easy for signal fast acquisition in high dynamic environment with large Doppler frequency. The fast acquisition algorithm based PMF-FFT makes partial matched filter combine with FFT to realize the fast acquisition of the spread spectrum signal,which greatly reduces the acquisition time and has the widespread application value. By building mathematical model,the characteristics of PMF-FFT algorithm are analyzed in detail,and the influencing factors and design criteria of length selection for partial matched filter are confirmed,which solves the primary problem for the realization of algorithm.

关 键 词：PMF-FFT 部分匹配滤波器 高动态 捕获性能 

分 类 号：TN914.42[电子电信—通信与信息系统]