线性调频信号参数检测是SAR对抗的一个重要问题 ,其估计参数的方法有多种 ,但对于分析部分样本LFM信号而言 ,绝大多数估计方法的误差很大。在用快速相关解线调估计和分析部分样本LFM信号存有误差的基础上 ,提出了一种改进的快速相关解线调算法运用于部分样本LFM信号的起始频率和调频斜率参数的估计 ,减小了误差。最后对改进的算法进行了仿真 ,证实了改进后的有效性。

It is important for SAR Counter to estimate parameters of Linear Frequency Modulated Signal, although there are many parameters estimation methods, most of them produce significant error. Based on methuel of analyzing partial LFM signal with rapidl correlative dechirp estimation, a improved method of estimation of modulated parameters for LFM signal is suggested to decrease error. Finally, this algorithm is valid ated by simulation. [

TN957.51