Title :
A novel range migration algorithm of GEO SAR echo data
Author :
Liu, Feifeng ; Hu, Cheng ; Zeng, Tao ; Long, Teng ; Jin, Lihua
Author_Institution :
Dept. of EE, Beijing Inst. of Technol., Beijing, China
Abstract :
The key problem of the imaging processing in geosynchronous earth orbit (GEO) SAR system is the space-variance of the Doppler parameters, which will result in the defocus of the SAR image with classical imaging algorithm. In this paper, a Modified Range Migration Algorithm (RMA) is proposed to overcome the space-variance of Doppler parameters by compensating the velocity change along the location of the target. Furthermore the simulation results fully verify the effectiveness of derived algorithm after velocity compensation.
Keywords :
Earth orbit; echo; radar imaging; synthetic aperture radar; Doppler parameter; GEO SAR echo data; geosynchronous earth orbit SAR system; imaging processing; range migration algorithm; space variance; Azimuth; Doppler effect; Focusing; Orbits; Simulation; Trajectory; GEO SAR; Range migration algorithm; space-variance of the Doppler parameters;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2010 IEEE International
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4244-9565-8
Electronic_ISBN :
2153-6996
DOI :
10.1109/IGARSS.2010.5651127
