Coordinating complementary waveforms for sidelobe suppression

Dang, W, Pezeshki, A, Howard, S, Moran, W and Calderbank, R 2011, 'Coordinating complementary waveforms for sidelobe suppression', in Proceedings of the 45th Asilomar Conference on Signals, Systems and Computers (ASILOMAR 2011), Pacific Grove, California, United States, 6-9 November 2011, pp. 2096-2100.


Document type: Conference Paper
Collection: Conference Papers

Title Coordinating complementary waveforms for sidelobe suppression
Author(s) Dang, W
Pezeshki, A
Howard, S
Moran, W
Calderbank, R
Year 2011
Conference name ASILOMAR 2011
Conference location Pacific Grove, California, United States
Conference dates 6-9 November 2011
Proceedings title Proceedings of the 45th Asilomar Conference on Signals, Systems and Computers (ASILOMAR 2011)
Publisher IEEE
Place of publication United States
Start page 2096
End page 2100
Total pages 5
Abstract We present a general method for constructing radar transmit pulse trains and receive filters for which the radar point-spread function in delay and Doppler, given by the cross-ambiguity function of the transmit pulse train and the pulse train used in the receive filter, is essentially free of range sidelobes inside a Doppler interval around the zero-Doppler axis. The transmit pulse train is constructed by coordinating the transmission of a pair of Golay complementary waveforms across time according to zeros and ones in a binary sequence P. The pulse train used to filter the received signal is constructed in a similar way, in terms of sequencing the Golay waveforms, but each waveform in the pulse train is weighted by an element from another sequence Q. We show that a spectrum jointly determined by P and Q sequences controls the size of the range sidelobes of the cross-ambiguity function and by properly choosing P and Q we can clear out the range sidelobes inside a Doppler interval around the zero-Doppler axis. The joint design of P and Q enables a tradeoff between the order of the spectral null for range sidelobe suppression and the signal-to-noise ratio at the receiver output. We establish this trade-off and derive a necessary and sufficient condition for the construction of P and Q sequences that produce a null of a desired order.
Subjects Electrical and Electronic Engineering not elsewhere classified
Keyword(s) Across time
Cross-ambiguity function
Doppler
General method
Joint designs
Point-Spread function
Pulse train
Q sequence
Range sidelobe suppression
Range sidelobes
Receive filters
Received signals
Side-lobe suppression
Sufficient conditions
Wave forms
DOI - identifier 10.1109/ACSSC.2011.6190398
Copyright notice © 2011 IEEE
ISBN 9781467303217
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