Title :
A new technique for noise filtering of SAR interferogram phase images
Author :
Lee, J.S. ; Papathanassiou, K.P. ; Ainsworth, T.L. ; Grunes, M.R. ; Reigber, A.
Author_Institution :
Remote Sensing Div., Naval Res. Lab., Washington, DC, USA
Abstract :
This paper addresses the noise filtering problem for SAR interferogram phase images. The phase noise is characterized by an additive noise model, and a filtering algorithm based on this noise model was developed by filtering noise along fringes. In addition, this filter adaptively adjusts the amount of filtering according to the coherence. The effectiveness of this filter is demonstrated using SIR-C/X-SAR multi-pass generated interferograms
Keywords :
geophysical techniques; phase noise; radar imaging; radar theory; remote sensing by radar; spaceborne radar; synthetic aperture radar; topography (Earth); InSAR; SAR interferogram; SIR-C; X-SAR; additive noise model; filtering; filtering algorithm; fringe; geophysical measurement technique; interferometric SAR; land surface topography; multi-pass generated interferogram; noise filtering; phase image; phase noise; radar imaging; radar remote sensing; spaceborne radar; synthetic aperture radar; terrain mapping; Adaptive filters; Additive noise; Coherence; Filtering; Laboratories; Noise generators; Noise reduction; Phase noise; Pixel; Remote sensing;
Conference_Titel :
Geoscience and Remote Sensing, 1997. IGARSS '97. Remote Sensing - A Scientific Vision for Sustainable Development., 1997 IEEE International
Print_ISBN :
0-7803-3836-7
DOI :
10.1109/IGARSS.1997.609040
