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

fYear

2001

fDate

2001

Firstpage

938

Lastpage

942

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Radar, 2001 CIE International Conference on, Proceedings

Conference_Location

Beijing

Print_ISBN

0-7803-7000-7

Type

conf

DOI

10.1109/ICR.2001.984865

Filename

984865