%0 Journal Article
%T Phase-Modulated Waveform Design for Extended Target Detection in the Presence of Clutter
%A Xuhua Gong
%A Huadong Meng
%A Yimin Wei
%A Xiqin Wang
%J Sensors
%D 2011
%I MDPI AG
%R 10.3390/s110707162
%X The problem to be addressed in this paper is a phase-modulated waveform design for the detection of extended targets contaminated by signal-dependent noise (clutter) and additive noise in practical radar systems. An optimal waveform design method that leads to the energy spectral density (ESD) of signal under the maximum signal-to-clutter-and-noise ratio (SCNR) criterion is introduced first. In order to make full use of the transmission power, a novel phase-iterative algorithm is then proposed for designing the phase-modulated waveform with a constant envelope, whose ESD matches the optimal one. This method is proven to be able to achieve a small SCNR loss by minimizing the mean-square spectral distance between the optimal waveform and the designed waveform. The results of extensive simulations demonstrate that our approach provides less than 1 dB SCNR loss when the signal duration is greater than 1 ¦Ěs, and outperforms the stationary phase method and other phase-modulated waveform design methods.
%K clutter
%K constant modulus waveform
%K radar waveform design
%K target detection
%U http://www.mdpi.com/1424-8220/11/7/7162