Title :
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
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;
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
DOI :
10.1109/CISP.2009.5304186
