Title :
Phase distortion modelling due to motion in wave scattering mechanism applied to SAR images analysis
Author :
Gras, Vincent ; Sintes, Christophe ; Garello, René
Author_Institution :
GET - ENST Bretagne, Brest
Abstract :
In SAR image processing, taking phase distortion in radar signals into account is equivalent to considering motion as information embedded in it. In the aim of doing this, a model based on Gaussian linear frequency modulation is introduced, adapted to quantification and estimation of phase distortion. This model is based on three parameters, the Doppler frequency modulation rate K, the analysis time T a and the Doppler frequency f d, and allows practically a local representation of any quasi-punctal target echo.
Keywords :
Doppler effect; geophysical signal processing; image processing; motion compensation; radar signal processing; synthetic aperture radar; Doppler frequency modulation rate; Gaussian linear frequency modulation; SAR image processing; analysis time; motion induced phase distortion modelling; phase distortion estimation; phase distortion quantification; quasipunctal target echo; radar signal phase distortion; wave scattering mechanism; Doppler radar; Image motion analysis; Image processing; Motion analysis; Phase distortion; Radar imaging; Radar scattering; Radar signal processing; Signal processing; Synthetic aperture radar;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2007. IGARSS 2007. IEEE International
Conference_Location :
Barcelona
Print_ISBN :
978-1-4244-1211-2
Electronic_ISBN :
978-1-4244-1212-9
DOI :
10.1109/IGARSS.2007.4422843
