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Ensemble based atmospheric phase screen estimation using least squares

Ulmer, Franz-Georg and Adam, Nico and Eineder, Michael (2012) Ensemble based atmospheric phase screen estimation using least squares. In: IEEE Geoscience and Remote Sensing Society, pp. 5606-5609. IGARSS 2012, 22.27. July 2012, München.

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Abstract

It is a matter of fact that atmosphere causes a significant effect in interferometric measurements. A stack of acquisitions is needed to reduce this nuisance influence. Another approach is to use numerical weather predictions (NWP). However, it is not straight forward to choose parameters of a NWP--system to get the best possible result. Also, different input data can be used. Ensemble methods are well established to get a most reasonable forecast which is a mixture of differently initialized forecasts. Based on these weather predictions (NWPs), a collection of possible atmospheric phase screens (APSs) is computed and a most reasonable atmospheric phase screen (APS) is estimated. The idea behind this ensemble is, that the difference between every two pixels in an interferogram should match the difference of the corresponding pixels of a restricted linear combination of different estimated APS which results from different NWPs. This paper describes the technique in detail and provides an example demonstration using real data.

Document Type:Conference or Workshop Item (Speech)
Title:Ensemble based atmospheric phase screen estimation using least squares
Authors:
AuthorsInstitution or Email of Authors
Ulmer, Franz-Georgfranz-georg.ulmer@dlr.de
Adam, Niconico.adam@dlr.de
Eineder, MichaelMichael.Eineder@dlr.de
Date:2012
Journal or Publication Title:IEEE Geoscience and Remote Sensing Society
Page Range:pp. 5606-5609
Status:Published
Keywords:InSAR, APS, NWP, PSI
Event Title:IGARSS 2012
Event Location:München
Event Type:international Conference
Event Dates:22.27. July 2012
HGF - Research field:Aeronautics, Space and Transport, Aeronautics, Space and Transport (old)
HGF - Program:Space, Space (old)
HGF - Program Themes:Earth Observation, W EO - Erdbeobachtung
DLR - Research area:Raumfahrt, Space
DLR - Program:R EO - Erdbeobachtung, W EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben hochauflösende Fernerkundungsverfahren, W - Vorhaben hochauflösende Fernerkundungsverfahreen (old), W - Vorhaben Geowissenschaftl. Fernerkundungs- und GIS-Verfahren (old), R - Vorhaben Geowissenschaftl. Fernerkundungs- und GIS-Verfahren
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > SAR Signal Processing
Deposited By: Franz-Georg Ulmer
Deposited On:10 Jul 2012 07:34
Last Modified:21 Mar 2014 10:00

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