A Method for Compensation of SAS Range Cell Migration

Author

Wang Haitao ; Zhou Hao ; Tang Jinsong

Author_Institution

Dept of Weaponry Eng., Naval Univ. of Eng., Wuhan, China

fYear

2009

fDate

17-19 Oct. 2009

Firstpage

1

Lastpage

4

Abstract

Efficient and precise compensation of the range cell migration (RCM) effect is a key point for a fast and accurate synthetic aperture sonar (SAS) data processor. In particular, the range dependent nature of RCM complicates the compensation operation. It has been recently shown that an exact compensation of the range dependent RCM phenomenon can be carried out by applying the chirp Z transform procedure. A new phase preserving SAS processor that solves the range dependent RCM is presented and verified theoretically in this paper, as well as its limitations. The operations involved are only Fourier transforms and multiplications, no interpolation used. The performance of the new processor is demonstrated by experiments with simulated and real data.

Keywords

Fourier transforms; Z transforms; image resolution; sonar imaging; synthetic aperture sonar; Fourier transform; RCM phenomenon; SAS data processor; chirp Z transform procedure; high resolution imaging sonar system; interpolation; range cell migration; synthetic aperture sonar; Chirp; Data processing; Filters; Fourier transforms; Frequency domain analysis; Interpolation; Signal analysis; Signal processing; Synthetic aperture sonar; Weapons;

fLanguage

English

Publisher

ieee

Conference_Titel

Image and Signal Processing, 2009. CISP '09. 2nd International Congress on

Conference_Location

Tianjin

Print_ISBN

978-1-4244-4129-7

Electronic_ISBN

978-1-4244-4131-0

Type

conf

DOI

10.1109/CISP.2009.5304186

Filename

5304186