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Minimum Cost Flow phase unwrapping supported by multibaseline unwrapped gradient

Lachaise, Marie and Bamler, Richard (2010) Minimum Cost Flow phase unwrapping supported by multibaseline unwrapped gradient. EUSAR 2010, 7-10 June 2010, Aachen, germany.

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Abstract

The objective of the TanDEM-X Mission is the generation of a global high resolution Digital Elevation Model (DEM). To carry out this goal, two interferograms with different baselines will be acquired. We propose a novel two-stage multibaseline phase unwrapping method. Maximum Likelihood Estimation (MLE) is used to reduce the ambiguity and errors in gradient estimation on a pixel-by-pixel basis. Based on these estimates, Minimum Cost Flow (MCF) is used to unwrap the phase accounting for the overall conservative condition of the gradient. Hence the advantages of both techniques are efficiently integrated. Results on simlated data using TerraSAR-X parameters are reported.

Document Type:Conference or Workshop Item (Poster)
Title:Minimum Cost Flow phase unwrapping supported by multibaseline unwrapped gradient
Authors:
AuthorsInstitution or Email of Authors
Lachaise, Mariemarie.lachaise@dlr.de
Bamler, Richardrichard.bamler@dlr.de
Date:June 2010
Page Range:pp. 774-777
Status:Published
Keywords:Phase unwrapping, TanDEM-X, Minimum Cost Flow
Event Title:EUSAR 2010
Event Location:Aachen, germany
Event Type:international Conference
Event Dates:7-10 June 2010
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):W - Projekt TanDEM-X (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > SAR Signal Processing
Deposited By: Marie Lachaise
Deposited On:17 Jun 2010 08:07
Last Modified:21 Mar 2014 10:14

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