基于相参处理的宽脉冲信号参数估计快速算法

摘要

提出了一种宽脉冲信号参数估计快速算法,利用抽取的方法来降低宽脉冲信号参数估计的计算量.首先,对宽脉冲正弦波信号进行抽取构造相参脉冲串,利用相参脉冲频率估计算法进行频率估计.其次,对于宽脉冲线性调频信号,对其做延时相关之后即可转化为宽脉冲正弦波信号,然后在上述抽取和相参处理方法的基础上即可得到宽脉冲线性调频信号参数估计值.性能分析和仿真结果表明,该算法在保证一定的参数估计精度前提下,大大降低了算法的计算量,有利于宽脉冲信号参数估计的实时处理.%A fast algorithm of parameter estimation for wide pulse signal is presented. The amount of calculation is reduced by using signal extraction approach. The coherent pulse train is structured by extracting wide sine pulse signal, and the frequency is estimated by using the algorithm of frequency estimation for coherent pulse train. The wide LFM pulse signal can be turned into wide sine pulse signal using the delay correlation algorithm. Then the parameter of wide LFM pulse signal can be estimated based on the signal extraction and coherent processing approach mentioned above. The performance analyses and simulation results show that the algorithm ensures the precision, reduces the amount of calculation greatly and benefits the realtime processing of wide pulse signal parameter estimation.