Title :
2-D target imaging of spotlight SAR based on higher-order statistics
Author :
Liang, Xingdong ; Tao, Ran ; Zhou, Siyong ; Wang, Yue
Author_Institution :
Dept. of Electron. Eng., Beijing Inst. of Technol., China
Abstract :
This paper analyzes the imaging algorithm of spotlight SAR. It is shown that the spotlight SAR imaging can be viewed as 2D harmonic retrieval when the target is mainly composed of a small number of distinct point scatterers. A new approach based on higher-order statistics for radar imaging is presented to reduce the influence of Gaussian colored noise. A new method for harmonics pairing is also presented. Compared with the Fourier transform and algorithms based on autocorrelation, such as MUSIC, the new method can effectively reduce the influence of Gaussian colored noise
Keywords :
Gaussian noise; electromagnetic wave scattering; higher order statistics; radar imaging; radar interference; radar theory; synthetic aperture radar; 2D harmonic retrieval; 2D target imaging; Gaussian colored noise; harmonics pairing; higher-order statistics; point scatterers; radar imaging; spotlight SAR; Algorithm design and analysis; Autocorrelation; Colored noise; Fourier transforms; Higher order statistics; Image analysis; Image retrieval; Radar imaging; Radar polarimetry; Radar scattering;
Conference_Titel :
Radar Conference, 2000. The Record of the IEEE 2000 International
Conference_Location :
Alexandria, VA
Print_ISBN :
0-7803-5776-0
DOI :
10.1109/RADAR.2000.851885
