Title :
Motion compensation for spotlight SAR mode imaging
Author :
Wenxian, Fu ; Shaohong, Li ; Wen, Hong
Author_Institution :
Dept. of Electron. Eng., Beijing Univ. of Aeronaut. & Astronaut., China
Abstract :
In this paper the phase errors from motion errors in spotlight synthetic aperture radar (SAR) are studied, and then are decomposed into two kinds, space-invariant error caused by translation and space-variant error by rotation. Computer simulations show the above mentioned errors and their corresponding damage on spotlight SAR images. Based on the above analysis the prominent point processing (PPP) algorithm is introduced for spotlight SAR imaging with polar format algorithm (PFA). Then motion compensation with PPP not only space-invariant error but also space-variant error are almost removed and high-resolution SAR images are obtained. Finally, results are presented with simulated data
Keywords :
error analysis; motion compensation; radar imaging; radar resolution; synthetic aperture radar; PFA; PPP algorithm; computer simulations; high-resolution SAR images; motion errors; phase errors; polar format algorithm; prominent point processing algorithm; rotation; space-invariant error; space-variant error; translation; Algorithm design and analysis; Computer errors; Computer simulation; Degradation; Image analysis; Layout; Motion compensation; Radar polarimetry; Radar scattering; Radar tracking;
Conference_Titel :
Radar, 2001 CIE International Conference on, Proceedings
Conference_Location :
Beijing
Print_ISBN :
0-7803-7000-7
DOI :
10.1109/ICR.2001.984865
