Optimizing polyphase sequences for orthogonal netted radar

被引：80
|
作者：
Khan, Hammad A.
Zhang, Yangyang
Ji, Chunlin
Stevens, Christopher J.
Edwards, David J.
O'Brien, Dominic
机构：
[1] Univ Oxford, Dept Engn Sci, Oxford OX1 3PJ, England
[2] Univ Cambridge, Dept Engn, Signal Proc & Commun Lab, Cambridge CB2 1PZ, England
来源：
IEEE SIGNAL PROCESSING LETTERS | 2006年 / 13卷 / 10期
关键词：
cross entropy (CE); Doppler resilience; netted radar; orthogonal functions; pulse compression radar; radar signal analysis; radar theory; sequences;
D O I：
10.1109/LSP.2006.877143
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Orthogonal netted radar transmitter signals require a very low aperiodic autocorrelation peak sidelobe level (PSL), low aperiodic cross-correlation, and a good resilience to small Doppler shifts. A new set of polyphase sequences is presented with good correlation properties as well as resilience to Doppler shifts. These sequences are built using numerical optimization based on correlation properties. A structural constraint is imposed on the optimized polyphase sequences, which maintains Doppler tolerance. Cross entropy (CE) technique is used to optimize the sequences. Correlation and Doppler results are compared with best-known sequences on various merit factors and shown to be superior.
引用
收藏
页码：589 / 592
页数：4
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