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Wet snow depth from TanDEM-X single-pass InSAR DEM differencing

Leinss, Silvan and Antropov, Oleg and Vehviläinen, Juho and Lemmetyinen, Juha and Hajnsek, Irena and Praks, Jaan (2018) Wet snow depth from TanDEM-X single-pass InSAR DEM differencing. In: International Geoscience and Remote Sensing Symposium (IGARSS), pp. 8500-8503. IEEE. International Geoscience and Remote Sensing Symposium (IGARSS) 2018, 2018-07-22 - 2018-07-27, Valencia, Spanien. DOI: 10.1109/IGARSS.2018.8518661 ISBN 978-1-5386-7150-4 ISSN 2153-7003

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Official URL: https://ieeexplore.ieee.org/document/8518661

Abstract

Single pass radar interferometry (sp-InSAR) is a well established technique for generation of digital elevation models (DEM). Differencing two DEMs acquired at different times can reveal topographic changes. However snow depth estimation by DEM differencing is still an ongoing topic in radar research: in contrast to snow free surfaces, the snow surface elevation is difficult to detect either because of microwave penetration into dry snow or because of the weak backscatter return from wet snow which significantly decorrelates the interferometric signal. In this study we demonstrate first results of wet snow depth estimation by differencing sp-InSAR DEMs acquired by the TanDEM-X satellite mission. The results show, in contrast to dry snow, a clear sensitivity to wet snow. However, additionally to a high vertical sensitivity of a few ten centimeters a very low noise-equivalent-sigma-zero (NESZ) is crucial for successful snow depth estimation.

Item URL in elib:https://elib.dlr.de/127342/
Document Type:Conference or Workshop Item (Speech)
Title:Wet snow depth from TanDEM-X single-pass InSAR DEM differencing
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Leinss, SilvanETH ZürichUNSPECIFIED
Antropov, OlegAalto UniversityUNSPECIFIED
Vehviläinen, JuhoETH ZürichUNSPECIFIED
Lemmetyinen, JuhaFMIUNSPECIFIED
Hajnsek, IrenaDLR-HR, ETH ZurichUNSPECIFIED
Praks, JaanDLR-HRUNSPECIFIED
Date:2018
Journal or Publication Title:International Geoscience and Remote Sensing Symposium (IGARSS)
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
DOI :10.1109/IGARSS.2018.8518661
Page Range:pp. 8500-8503
Publisher:IEEE
Series Name:IEEE Xplore Digital Library
ISSN:2153-7003
ISBN:978-1-5386-7150-4
Status:Published
Keywords:snow depth ,wet snow, TanDEM-X, radar interferometry, DEM generation, DEM differencing
Event Title:International Geoscience and Remote Sensing Symposium (IGARSS) 2018
Event Location:Valencia, Spanien
Event Type:international Conference
Event Dates:2018-07-22 - 2018-07-27
Organizer:IEEE GRSS
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben Sicherheitsrelevante Erdbeobachtung
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute > Radar Concepts
Deposited By: Radzuweit, Sibylle
Deposited On:17 May 2019 12:12
Last Modified:31 Jul 2019 20:25

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