Concept design of a MIMO-SAR using frequency diversity

Author

Canguan Gao ; Yunkai Deng ; Jin Feng ; Wang, Ruiqi ; He Yan

Author_Institution

Inst. of Electron., Beijing, China

fYear

2012

fDate

22-27 July 2012

Firstpage

7432

Lastpage

7435

Abstract

A MIMO-SAR framework based on frequency diversity is presented. The variety of carrier frequency causes the phase modulation and the change of FM rate in azimuth. They will bring spurious responses in the final radar imaging. The influence of phase modulation is overcome by selecting an appropriate sampling rate to the range signal. When the range cell migration can be neglected, we can assume the azimuth signal as the result of a multi-channel sampling system, and then the influence of FM rate changing is eliminated by Doppler spectrum reconstruction. The feasibility of the imaging algorithm is validated by simulation experiments.

Keywords

Doppler radar; FM radar; MIMO radar; diversity reception; phase modulation; radar imaging; Doppler spectrum reconstruction; FM rate; MIMO-SAR framework; azimuth; carrier frequency; frequency diversity; phase modulation; radar imaging; Apertures; Azimuth; Doppler effect; Frequency diversity; Frequency modulation; MIMO; Synthetic aperture radar; Frequency diversity; High-resolution; MIMO; SAR; wide-swath;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium (IGARSS), 2012 IEEE International

Conference_Location

Munich

ISSN

2153-6996

Print_ISBN

978-1-4673-1160-1

Electronic_ISBN

2153-6996

Type

conf

DOI

10.1109/IGARSS.2012.6351943

Filename

6351943