Title :
Study on bistatic SAR ocean wave imaging mechanism
Author :
Ying, Yu ; Xiaoqing, Wang ; Minhui, Zhu ; Jinsong, Chong
Author_Institution :
Nat. Key Lab. of Microwave Imaging Technol., Chinese Acad. of Sci., Beijing, China
Abstract :
In order to develop bistatic SAR ocean investigation, the first issue is the study of bistatic SAR ocean surface imaging mechanism. And velocity bunching mechanism is a SAR inherent modulation. Thus, the intensity expression in the bistatic SAR image plane is derived in this paper. The expression describes quantificationally the displacement of the scatter elements in the image plane and a degradation in radar resolution in azimuthal direction. In addition, a bistatic SAR linear velocity bunching transfer function is obtained in the linear parameter regime. Finally, this paper analyzes qualitatively the effects that various platform observation conditions have on the bistatic SAR linear imaging range of wave spectrum.
Keywords :
geophysical image processing; ocean waves; radar imaging; synthetic aperture radar; SAR image plane; SAR inherent modulation; SAR linear imaging range; azimuthal direction; bistatic SAR ocean wave imaging mechanism; observation condition; radar resolution; velocity bunching mechanism; wave spectrum; Degradation; Electromagnetic scattering; Marine technology; Microwave imaging; Ocean waves; Radar imaging; Radar scattering; Sea surface; Surface waves; Transmitters; Bistatic SAR; Observation condition; Ocean; Velocity bunching;
Conference_Titel :
Geoscience and Remote Sensing Symposium,2009 IEEE International,IGARSS 2009
Conference_Location :
Cape Town
Print_ISBN :
978-1-4244-3394-0
Electronic_ISBN :
978-1-4244-3395-7
DOI :
10.1109/IGARSS.2009.5417994
