Method for iterative disk masking and automatic error repair for

Details Method for iterative disk masking and automatic error repair for Method for iterative disk masking and automatic error repair for

1996-03-20

1998-11-10

Sotomayor, John B.

Communications: directive radio wave systems and devices (e.g.,

Synthetic aperture radar

342162, 342195, G01S 1390

Patent

active

058350551

ABSTRACT:
Disclosed is a new alternative method for the phase unwrapping of the interferogram of two SAR (Synthetic Aperture Radar) images of the same area. This new method uses an iterative approach to the phase unwrapping problem by applying local circular or elliptical masks centered on the phase residues. A phase unwrapping error is detected automatically during the unwrapping process by comparing each unwrapped value with neighboring unwrapped values. This new method for phase unwrapping significantly improves the quality of unwrapped phase maps. This will allow extraction of quantitative information such as height and deformation from interferometric SAR measurements. This is significant for the routine application of SAR interferometry in fields like digital elevation mapping and large scale deformation mapping.

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Flynn, Thomas J., Consistent 2-D Phase Unwrapping Guided by a Quality Map, IEEE, pp. 2057-2059, 1996.

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