相位编码信号的自适应接收回波处理

首先建立了匹配滤波器输出随多普勒频移的变化规律模型。分析得出通过缩短匹配滤波器长度,可减小多普勒频移对压缩输出的影响,采用一组部分相关匹配滤波器对接收回波处理,估计出回波中的多普勒频率,避免了传统方法的计算量大、结构复杂难以实现等缺陷。方法结构简单,能以较高精度对回波中的多普勒频率作出估计,有利于相位编码信号在快速动目标观测方面的应用。

Adaptive Processing of Phase Coded Waveform Echo

At first,the correlation model of match filter output about Doppler frequency variation was set up.Detailed analysis indicates that the Doppler effects will be reduced by shortening the match filter length.We utilize a set of partially correlative match filters to process the echo signal,and the Doppler frequency is estimated precisely.This new method obtains simple configuration and avoids the defects of traditional methods,such as huge amount of calculation,complex configuration,and so on.As a result of precise estimation of the echo Doppler frequency,the proposed method is in favor of the application of the phase coded waveform in fast moving target observation.