2-D weighted least-squares phase unwrapping

Details 2-D weighted least-squares phase unwrapping 2-D weighted least-squares phase unwrapping

1994-06-01

1995-06-13

Sotomayor, John B.

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

Synthetic aperture radar

342159, 342162, 342191, 342195, G01S 1390

Patent

active

054247438

ABSTRACT:
Weighted values of interferometric signals are unwrapped by determining the least squares solution of phase unwrapping for unweighted values of the interferometric signals; and then determining the least squares solution of phase unwrapping for weighted values of the interferometric signals by preconditioned conjugate gradient methods using the unweighted solutions as preconditioning values. An output is provided that is representative of the least squares solution of phase unwrapping for weighted values of the interferometric signals.

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