Repeating Decoys Discrimination Based on Range Glint
Repeating decoys (based on DRFM),through the main lobe into the radar receiver,realistically simulate real targets echo in both time and frequency domain,and cause serious threat to radars search,identification and tracking.At the near distance,angular error caused by targets angular glint is an important noise source and it can be utilized to the discrimination of repeating decoys.At the remote and ultra long distance,angular glint is not applicable for the discrimination of repeating decoys.Compared with the angular glint error,the range glint error is completely independent of the targets absolute distance.Therefore,the targets range glint provides a basis to the discrimination between the repeating decoy and the actual target.This paper,based on the premise that the actual target is multi-feed radiation and the repeating decoy is single feed radiation,analyzes the range glint of extended targets by sampling ratio ranging model and explains its physical essence from the perspective of echo spectrum distortion.On the basis,by analyzing the range measuring variance of both actual targets and repeating decoys,the Neyman-Pearson theorem and GLRT are utilized to make correct discrimination.Finally,the performance of the discrimination algorithm is illustrated by Monte Carlo simulations.
range glint repeating decoys GLRT
Wang Jun-jie Zhao Feng Liu Jin Ai Xiao-feng Wang Lian-dong
Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System,National University of Defense Technology Changsha, China
国际会议
哈尔滨
英文
964-967
2016-07-21（万方平台首次上网日期，不代表论文的发表时间）