Designing Unimodular Waveform with Low Range Sidelobes and Stopband for Cognitive Radar via Relaxed Alternating ProjectionReport as inadecuate




Designing Unimodular Waveform with Low Range Sidelobes and Stopband for Cognitive Radar via Relaxed Alternating Projection - Download this document for free, or read online. Document in PDF available to download.

International Journal of Antennas and Propagation - Volume 2016 2016, Article ID 6280508, 9 pages -

Research ArticleSchool of Electronics and Information Engineering, Harbin Institute of Technology, No. 92 West Dazhi Street, Nan Gang District, Harbin, Heilongjiang 150001, China

Received 21 October 2015; Revised 1 February 2016; Accepted 1 March 2016

Academic Editor: Mourad Nedil

Copyright © 2016 Xiang Feng et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Cognitive radar could adapt the spectrum of waveforms in response to information regarding the changing environment, so as to avoid narrowband interference or electronic jamming. Besides stopband constraints, low range sidelobes and unimodular property are also desired. In this paper, we propose a Spectral Approximation Relaxed Alternating Projection SARAP method, to synthesize unimodular waveform with low range sidelobes and spectral power suppressed. This novel method, based on phase retrieval and relaxed alternating projection, could convert the correlation optimization into the spectrum approximation via the Fast Fourier Transform FFT. Moreover, by virtue of the relaxation factor and accelerated factor, SARAP can exploit local area and more likely converge to the global solution. Numerical trials have demonstrated that SARAP could achieve excellent performance and computational efficiency which will facilitate the real-time design.





Author: Xiang Feng, Yang-chun Song, Zhi-quan Zhou, and Yi-nan Zhao

Source: https://www.hindawi.com/



DOWNLOAD PDF




Related documents