Title :
Effective velocity estimation for space-borne SAR
Author :
Wong, Frank H. ; Tan, Ngee Leng ; Tat Soon Yeo
Author_Institution :
Dept. of Electr. Eng., Nat. Univ. of Singapore, Singapore
Abstract :
This paper presents a direct and simple method to determine the “effective” velocity in the hyperbolic slant range equation used in processing of space-borne SAR data. The algorithm first uses the orbit state vector to generate the actual instantaneous slant range as a function of azimuth time, for a selected point on the ground. This is followed by fitting the set of slant ranges with a hyperbolic model, which is used in most SAR processing algorithms
Keywords :
geophysical signal processing; geophysical techniques; radar signal processing; remote sensing by radar; spaceborne radar; synthetic aperture radar; terrain mapping; SAR; SAR processing algorithm; actual instantaneous slant range; algorithm; azimuth time; effective velocity estimation; fitting; geophysical measurement technique; hyperbolic model; hyperbolic slant range equation; land surface; orbit state vector; radar remote sensing; radar signal processing; spaceborne radar; synthetic aperture radar; terrain mapping; Approximation algorithms; Azimuth; Earth; Equations; Geometry; Layout; Least squares approximation; Mathematical model; Satellites; Solid modeling;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2000. Proceedings. IGARSS 2000. IEEE 2000 International
Conference_Location :
Honolulu, HI
Print_ISBN :
0-7803-6359-0
DOI :
10.1109/IGARSS.2000.860431
