Title :
Ground resolution analysis based on gradient method in geosynchronous SAR
Author :
Zhouting Wu ; Lijia Huang ; Donghui Hu ; Chibiao Ding
Author_Institution :
Inst. of Electron., Beijing, China
Abstract :
In geosynchronous synthetic aperture radar (SAR), due to the complex relative motion between the satellite and the target, and the effect of the curvature on the earth surface, the conventional imaging geometry for ground resolution analysis should be innovated. In this paper, the imaging geometry is advanced by adding a pitch angle. Then, based on the new geometry, the range resolution and the Doppler gradient resolution in the ground plane are deduced using gradient method. Finally, the resolution analysis is verified by simulation results.
Keywords :
gradient methods; radar imaging; synthetic aperture radar; Doppler gradient resolution; complex relative motion; geosynchronous SAR; geosynchronous synthetic aperture radar; gradient method; ground resolution analysis; imaging geometry; pitch angle; Doppler effect; Geometry; Image resolution; Imaging; Orbits; Satellites; Synthetic aperture radar; Geosynchronous SAR; gradient method; ground resolution analysis;
Conference_Titel :
Signal Processing, Communication and Computing (ICSPCC), 2013 IEEE International Conference on
Conference_Location :
KunMing
DOI :
10.1109/ICSPCC.2013.6664080
