elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Quantization Effects in TanDEM-X Data

Martone, Michele and Bräutigam, Benjamin and Krieger, Gerhard (2015) Quantization Effects in TanDEM-X Data. IEEE Transactions on Geoscience and Remote Sensing, 53 (2), pp. 583-597. IEEE - Institute of Electrical and Electronics Engineers. DOI: 10.1109/TGRS.2014.2325976 ISSN 0196-2892

[img] PDF
3MB

Abstract

TanDEM-X (TerraSAR-X add-on for Digital Elevation Measurement) is an innovative space-borne bistatic synthetic aperture radar (SAR) system comprising the twin satellites TerraSAR-X and TanDEM-X. The primary objective of the mission is the generation of a worldwide, timely, and consistent digital elevation model (DEM) in bistatic SAR configuration with an unprecedented accuracy. For TanDEM-X, as well as for future space-borne SAR missions, an increasing volume of on-board data is going to be demanded. This is due to the employment of large bandwidths, high PRFs, and multiple polarizations, which implies inevitably hard requirements in terms of on-board memory and downlink capacity. In this scenario, SAR raw data quantization represents an essential aspect. The data rate employed for the digitization of the recorded radar signal affects both the amount of data to be stored and transmitted to the ground and the quality of the resulting SAR products. In this paper, the impact of quantization on TanDEM-X monostatic and interferometric data is evaluated. Key quantities in estimating interferometric and SAR performance, like coherence and phase errors, are investigated in detail. Based on the obtained results, an optimization of the resource allocation strategy for the global DEM acquisition of TanDEM-X is discussed.

Item URL in elib:https://elib.dlr.de/86510/
Document Type:Article
Title:Quantization Effects in TanDEM-X Data
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Martone, MicheleUNSPECIFIEDUNSPECIFIED
Bräutigam, BenjaminUNSPECIFIEDUNSPECIFIED
Krieger, GerhardUNSPECIFIEDUNSPECIFIED
Date:February 2015
Journal or Publication Title:IEEE Transactions on Geoscience and Remote Sensing
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:53
DOI :10.1109/TGRS.2014.2325976
Page Range:pp. 583-597
Publisher:IEEE - Institute of Electrical and Electronics Engineers
ISSN:0196-2892
Status:Published
Keywords:Synthetic aperture radar (SAR), SAR interferometry (InSAR), TanDEM-X mission, block adaptive quantization (BAQ).
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 - Projekt TanDEM-X
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute > Radar Concepts
Microwaves and Radar Institute > Spaceborne SAR Systems
Deposited By: Martone, Michele
Deposited On:10 Dec 2013 11:07
Last Modified:31 Jul 2019 19:43

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.