A New Intra-pulse Feature Extraction Approach for Radar Signals Based on Modulation Domain
Guoyi Zhang · Telecommunication Engineering · 2010
In allusion to the lack of the existing modulation domain approach in extraction the intra-pulse feature of radar signals,a new extraction approach is proposed by detecting extremum points.The approach gains the extremum points of radar signals at first,and then processes the extremum points to extract the intra-pulse feature of the signals.It makes use of the maximum information of the extremum points and the thought of extracting the frequency twice to estimate the width of the subcode,which can improve the SNR performance of the approach effectively.Simulation results show that compared with the existing modulation domain approach,the proposed one has a 30% improvement in average precision estimation rate to the different intra-pulse features of the radar signals in the condition of a low SNR(Signal-to-Noise Ratio).