Title :
Improved Doppler parameters´ estimation for ScanSAR data
Author :
Wang Hongyan ; Jia Xin ; Wu Yanhong
Author_Institution :
Acad. of Equip. Command & Technol., Beijing
Abstract :
Estimation of Doppler centroid and Doppler rate is important for spaceborne synthetic aperture radar system. An improved method for Doppler parameters´ estimation based on special mode of ScanSAR is presented in this paper. Differing from the traditional estimating method, Doppler centroid and Doppler rate are estimated in same process using fractional Fourier transform. It has less computing complexity and is proved accurate by simulation.
Keywords :
Fourier transforms; computational complexity; spaceborne radar; synthetic aperture radar; Doppler centroid estimation; Doppler rate estimation; ScanSAR data; computing complexity; fractional Fourier transform; improved Doppler parameter estimation; spaceborne synthetic aperture radar system; Doppler parameters; ScanSAR; estimation; fractional Fourier transform;
Conference_Titel :
Radar Conference, 2009 IET International
Conference_Location :
Guilin
Print_ISBN :
978-1-84919-010-7
