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Coherent Large Beamwidth Processing of Radio-Echo Sounding Data

Heister, Anton and Scheiber, Rolf (2018) Coherent Large Beamwidth Processing of Radio-Echo Sounding Data. The Cryosphere, pp. 2969-2979. Copernicus Publications. DOI: 10.5194/tc-12-2969-2018 ISSN 1994-0416

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Official URL: https://www.the-cryosphere.net/12/2969/2018/

Abstract

Coherent processing of radio-echo sounding data of polar ice sheets is known to provide an indication of bedrock properties and detection of internal layers. We investigate the benefits of coherent processing of a large azimuth beamwidth to retrieve and characterize the orientation and angular backscattering properties of the surface and subsurface features. MCRDS data acquired over two distinct test areas in Greenland are used to demonstrate the specular backscattering properties of the ice surface and of the internal layers, as well as the much wider angular response of the bedrock. The coupling of internal layers' orientation with the bed topography is shown to increase with depth. Spectral filtering can be used to increase the SNR of the internal layers and mitigate the surface multiple. The variance of the bed backscattering can be used to characterize the bed return specularity. The use of the SAR-focused RES data ensures the correct azimuth positioning of the internal layers for the subsequent slope estimation.

Item URL in elib:https://elib.dlr.de/121816/
Document Type:Article
Title:Coherent Large Beamwidth Processing of Radio-Echo Sounding Data
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Heister, AntonAnton.Heister (at) dlr.deUNSPECIFIED
Scheiber, RolfRolf.Scheiber (at) dlr.dehttps://orcid.org/0000-0002-6833-4897
Date:19 September 2018
Journal or Publication Title:The Cryosphere
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :10.5194/tc-12-2969-2018
Page Range:pp. 2969-2979
Editors:
EditorsEmail
MacGregor, Josephjoseph.a.macgregor@nasa.gov
Publisher:Copernicus Publications
ISSN:1994-0416
Status:Published
Keywords:radar ice sounding, SAR
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 Flugzeug-SAR
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute
Deposited By: Heister, Anton
Deposited On:01 Oct 2018 09:24
Last Modified:29 May 2019 17:18

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