ANALYSIS OF PHASE UNWRAPPING ALGORITHM
Cheng Pu;Xu Caijun; and Wang Hua
School of Geodesy and Geomatics, Wuhan University, Wuhan 430079
Abstract Three kinds of phase unwrapping algorithms:Residuecut, Leastsquares and Networkflow algorithm in common use today are reviewed and compared. Besides, a modified phase unwrapping algorithm of Residuecut is proposed. By converting GPS heights to the proper phases in the unwrapping, this algorithm can help us identify the location of branch cuts and initial points properly, avoid the influence of the lowquality zones on the highquality ones and unwrap the zones with high noises so as to get a better result.
Key words ：
InSAR
phase unwrapping
Modified Residue-cut
Least-squares
Statistical-Cost Network-Flow algorithm
Received: 01 January 1900
Corresponding Authors:
Cheng Pu
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