Title :
Convex optimization and MIMO RADAR waveform design in the presence of clutter
Author :
Naghibi, Tofigh ; Behnia, Freidoun
Author_Institution :
Dep. of Electr. Eng., Sharif Univ. of Technol., Tehran
Abstract :
Waveform design for target identification and classification in MIMO radar systems has been studied in several recent works. While the previous works considered signal independent noise and found optimal signals for an estimation algorithm, here we extend the results to the case where clutter is also present and then we will find the optimum waveform for several estimators differing in the assumptions on the given statistics. Several different approaches to the optimal waveform design are proposed, including minimizing the error of MMSE estimator, minimizing the maximum error of the covariance shaping least square (CSLS) estimator and minimizing the MSE error of scaled least square (SLS) estimator. Choosing optimal waveform for MMSE estimator leads to the semi-definite programming (SDP) problem. Finding the optimal transmit signals for CSLS estimator results in a minimax eigenvalue problem. Finally it is shown that equal power waveforms are the best transmit signals for the SLS estimator.
Keywords :
MIMO communication; eigenvalues and eigenfunctions; least mean squares methods; minimax techniques; radar clutter; target tracking; MIMO radar waveform; MMSE estimator; convex optimization; covariance shaping least square estimator; minimax eigenvalue problem; radar clutter; semidefinite programming; target classification; target identification; Design optimization; Doppler radar; Least squares approximation; MIMO; Parameter estimation; Radar antennas; Radar clutter; Radar detection; Signal design; Signal resolution;
Conference_Titel :
Signals, Circuits and Systems, 2008. SCS 2008. 2nd International Conference on
Conference_Location :
Monastir
Print_ISBN :
978-1-4244-2627-0
Electronic_ISBN :
978-1-4244-2628-7
DOI :
10.1109/ICSCS.2008.4746864