Random switch antenna array FMCW radar and its signal processing method

Author

Hu, Chenxi ; Meng, Huadong ; Wang, Wei ; Li, Gang ; Wang, Xiqin

Author_Institution

Dept. of Electron. Eng., Tsinghua Univ., Beijing, China

fYear

2012

fDate

17-20 June 2012

Firstpage

297

Lastpage

300

Abstract

In this paper, random switch antenna array (RSAA) is proposed to apply to the switch antenna array (SAA) frequency-modulated continuous-wave (FMCW) radar system. Firstly, the signal model and signal processing method of RSAA is analyzed and it shows that RSAA can successfully solve azimuth-velocity coupling problem. Then we suppose a method by using RSAA to reduce the switching frequency and sampling rate based on sparse signal representation with multiple measurement vectors (MMV). It is shown in simulations that the proposed algorithms yield better performance in terms of azimuth-velocity decoupling and can obtain high image accuracy with less observation data.

Keywords

CW radar; FM radar; antenna arrays; radar antennas; radar imaging; signal representation; signal sampling; vectors; MMV; RSAA FMCW radar; azimuth- velocity coupling problem; azimuth-velocity decoupling; data observation; frequency-modulated continuous-wave; image accuracy; multiple measurement vector; random switch antenna array; sampling rate; signal processing method; sparse signal representation; switching frequency reduction; Antenna arrays; Arrays; Azimuth; Multiplexing; Radar; Radar antennas; Switches; Azimuth-velocity coupling; FMCW Radar; M-FOCUSS; RSAA; Time-division multiplexing antenna array;

fLanguage

English

Publisher

ieee

Conference_Titel

Sensor Array and Multichannel Signal Processing Workshop (SAM), 2012 IEEE 7th

Conference_Location

Hoboken, NJ

ISSN

1551-2282

Print_ISBN

978-1-4673-1070-3

Type

conf

DOI

10.1109/SAM.2012.6250493

Filename

6250493