Anisotropic diffusion filtering and phase unwrapping for interferometric SAR

Author

Xin, Gao ; Chao, Wang ; Hong, Zhang

Author_Institution

LARSIS, Chinese Acad. of Sci., Beijing, China

Volume

3

fYear

2002

fDate

24-28 June 2002

Firstpage

1744

Abstract

This paper describes a novel variational optimization model with anisotropic diffusion for interferometric synthetic aperture radar (SAR) phase unwrapping, which is derived with the use of a global cost function to minimize the phase discontinuities in the unwrapped phase map and reduce noise. Numerical results proved that our phase unwrapping algorithm is robust and reliable on high noisy phase data with discontinuation.

Keywords

geophysical techniques; radar signal processing; radar theory; remote sensing by radar; synthetic aperture radar; terrain mapping; InSAR; algorithm; anisotropic diffusion filtering; discontinuation; geophysical measurement technique; global cost function; interferometric SAR; land surface; noise reduction; phase discontinuities; phase unwrapping; radar remote sensing; synthetic aperture radar; terrain mapping; unwrapped phase map; variational optimization model; Anisotropic magnetoresistance; Coherence; Cost function; Filtering; Image edge detection; Image reconstruction; Noise reduction; Noise robustness; Phase noise; Synthetic aperture radar interferometry;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium, 2002. IGARSS '02. 2002 IEEE International

Print_ISBN

0-7803-7536-X

Type

conf

DOI

10.1109/IGARSS.2002.1026240

Filename

1026240