Title :
An indirect doppler rate estimation scheme of SAR in low-contrast scene
Author :
Li, Wenchao ; Huang, Yulin ; Yang, Jianyu ; Wu, Junjie
Author_Institution :
Sch. of Electron. Eng., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
Doppler rate is an important parameter in synthetic aperture radar (SAR) imaging. Incorrect Doppler rate would cause great degradation of image quality. In this paper, by estimating the Doppler rate in high-contrast scene first, and then utilizing the fact that Doppler rate is inversely proportional to range, the Doppler rate in low-contrast scene is estimated indirectly and effectively.
Keywords :
Doppler radar; geophysical image processing; remote sensing by radar; synthetic aperture radar; SAR imaging; image quality degradation; indirect Doppler rate estimation scheme; low contrast scene; synthetic aperture radar; Doppler effect; Estimation; Flowcharts; Indexes; Synthetic aperture radar; Time frequency analysis; Transforms; Doppler rate estimation; Indirect estimation; Low contrast scene; SAR;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2011 IEEE International
Conference_Location :
Vancouver, BC
Print_ISBN :
978-1-4577-1003-2
DOI :
10.1109/IGARSS.2011.6050219
