Title :
Squint mode SAR imaging with range-walk removal
Author :
Wang, Kaizhi ; Liu, Xingzhao
Author_Institution :
Dept. of Electron. Eng., Shanghai Jiao Tong Univ., China
Abstract :
A new point of view is proposed to correct range migration and focus highly squinted SAR data. The procedure of range-migration correction is done not only in the range-Doppler (R-D) domain and the 2D frequency domain as usual, but also in the time domain. A modified chirp scaling (CS) algorithm is described, based on the new point. A quantitative analysis and simulations show that the new algorithm can process SAR data with a squint angle as large as 70° and a range swath of 50 km or wider.
Keywords :
frequency-domain analysis; radar imaging; radar theory; synthetic aperture radar; time-domain analysis; 2D frequency domain; chirp scaling algorithm; range migration correction; range swath; range-Doppler domain; range-walk removal; squint angle; squint mode SAR imaging; time domain; Algorithm design and analysis; Apertures; Azimuth; Chirp; Data engineering; Focusing; Frequency domain analysis; Geometry; Radar antennas; Radar polarimetry;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 2005. Proceedings. (ICASSP '05). IEEE International Conference on
Print_ISBN :
0-7803-8874-7
DOI :
10.1109/ICASSP.2005.1416208
