MIMO radar range-angular-doppler sidelobe suppression using random space-time coding

Author

Shenghua Zhou ; Hongwei Liu ; Xu Wang ; Yunhe Cao

Author_Institution

Nat. Lab. of Radar Signal Process., Xidian Univ., Xian, China

Volume

50

Issue

3

fYear

2014

fDate

Jul-14

Firstpage

2047

Lastpage

2060

Abstract

To further reduce the sidelobe level of waveforms for colocated multiple-input multiple-output (MIMO) radar, a random space-time coding (STC) method is proposed, which modulates prescribed waveforms at each transmission by a random permutation matrix multiplied by a random diagonal phase matrix. With the random modulation, sidelobes at different pulse repetition periods cannot be coherently accumulated, and then the overall sidelobe level drops significantly after coherent accumulation, as verified by numerical results.

Keywords

Doppler radar; MIMO radar; antenna radiation patterns; interference suppression; matrix multiplication; radar antennas; radar interference; random codes; space-time codes; transmitting antennas; MIMO radar range-angular-doppler sidelobe suppression; coherent accumulation; colocated multiple input multiple output radar antenna; matrix multiplication; pulse repetition period; random STC method; random diagonal phase matrix; random modulation; random permutation matrix; random space-time coding method; Array signal processing; Correlation; Covariance matrices; Encoding; MIMO; MIMO radar;

fLanguage

English

Journal_Title

Aerospace and Electronic Systems, IEEE Transactions on

Publisher

ieee

ISSN

0018-9251

Type

jour

DOI

10.1109/TAES.2013.120681

Filename

6965756