Title :
Partial Aperture Effect-Free Doppler Centroid Estimation Method for Airborne Side-looking SAR Based on Range-Doppler Domain Contrast Minimization
Author :
Yu Mingcheng ; Xu Jia ; Peng Yingning ; Wang Xiutan
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing
Abstract :
Based on the statistical property of the range migration (RM) in the synthetic aperture radar (SAR) range compressed range-Doppler (RD) domain, a Doppler centroid estimation method for SAR is proposed. The method can mitigate the partial aperture effect (PAE) which seriously degrades the estimation accuracy of the traditional Doppler estimators for high contrast scenes. Experimental results with real data of airborne high resolution SAR support the application of the proposed method to practical SAR processing.
Keywords :
Doppler radar; airborne radar; minimisation; synthetic aperture radar; Doppler centroid estimation; Doppler domain contrast minimization; SAR processing; airborne side-looking SAR; partial aperture effect; range migration; synthetic aperture radar; Azimuth; Bandwidth; Doppler radar; Frequency estimation; Layout; Maximum likelihood estimation; Minimization methods; Radar antennas; Synthetic aperture radar; Trajectory;
Conference_Titel :
Signal Processing, 2006 8th International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-9736-3
Electronic_ISBN :
0-7803-9736-3
DOI :
10.1109/ICOSP.2006.346007
