Multipath rejection of radar ESM signals based on the time-varying AR model

被引：0
作者：
Li L. [1 ]
Ji H.-B. [1 ]
Shi Y.-S. [1 ]
机构：
[1] School of Electronic Engineering, Xidian Univ.
来源：
Xi'an Dianzi Keji Daxue Xuebao/Journal of Xidian University | 2010年 / 37卷 / 04期
关键词：
Multipath rejection; Radar ESM signal; Time delay estimation; Time-varying AR model;
D O I：
10.3969/j.issn.1001-2400.2010.04.004
中图分类号：
学科分类号：
摘要：
Usually, there is multipath interference in radar ESM signals, which will influence the correctness of feature extraction and emitter recognition. A multipath rejection method based on the time-varying AR model is proposed in this paper. First, the nonlinear energy operator method is used for the approximate estimation of multipath time delay. Then the time-varying AR model based on the time function is used for sequence prediction. And the precise multipath time delay and amplitudes factor are obtained by the LS method, on the basis of which a stepwise rejection method is proposed for the multipath signal filtering. Finally, experiments on simulation and actual radar emitter signals verify the correctness and efficiency of the proposed method for multipath rejection.
引用
收藏
页码：602 / 607
页数：5
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