A Method of Phase Unwrapping Algorithms Efficiency Analysis for InSAR Data Processing

The experimental study of algorithms for radar data interferometric processing effectiveness is complicated by the fact that a quantitative result can be obtained only after the completion of the entire processing procedure, so it is difficult to assess the effectiveness of its first stages. A method of experimental evaluation of the accuracy of the results of interferometric processing by various algorithms of phase unwrapping with such combination of image and reference data, which does not require the use of the ambiguity height parameter, is proposed. The results of the method implementation for ALOS PALSAR data in relation to areas with hilly and low-mountain terrain are presented. Estimates of the vertical accuracy of ALOS PALSAR interferometric data for Region Growing and Minimal Cost Flow phase unwrapping algorithms implemented in the SARscape software package are obtained.