DocumentCode :
758231
Title :
Optimizing Polyphase Sequences for Orthogonal Netted Radar
Author :
Khan, Hammad A. ; Zhang, Yangyang ; Ji, Chunlin ; Stevens, Christopher J. ; Edwards, David J. ; O´Brien, Dominic
Author_Institution :
Dept. of Eng. Sci., Oxford Univ.
Volume :
13
Issue :
10
fYear :
2006
Firstpage :
589
Lastpage :
592
Abstract :
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
Keywords :
Doppler radar; correlation methods; entropy; optimisation; radar transmitters; sequences; Doppler shift; cross entropy technique; low aperiodic autocorrelation PSL; low aperiodic cross-correlation; orthogonal netted radar transmitter; peak sidelobe level; polyphase sequence optimization; Autocorrelation; Constraint optimization; Doppler radar; Doppler shift; Entropy; MIMO; Radar theory; Resilience; Signal processing; Transmitters; Cross entropy (CE); Doppler resilience; netted radar; orthogonal functions; pulse compression radar; radar signal analysis; radar theory; sequences;
fLanguage :
English
Journal_Title :
Signal Processing Letters, IEEE
Publisher :
ieee
ISSN :
1070-9908
Type :
jour
DOI :
10.1109/LSP.2006.877143
Filename :
1703534
Link To Document :
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