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Azimuth-Switched Quantization for SAR Systems and Performance Analysis on TanDEM-X Data

Martone, Michele and Bräutigam, Benjamin and Krieger, Gerhard (2014) Azimuth-Switched Quantization for SAR Systems and Performance Analysis on TanDEM-X Data. IEEE Geoscience and Remote Sensing Letters, 11 (1), pp. 181-185. IEEE - Institute of Electrical and Electronics Engineers. DOI: 10.1109/LGRS.2013.2251603 ISSN 1545-598X

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Abstract

In synthetic aperture radar (SAR) applications, raw data quantization represents an aspect of primary importance, since the number of bits employed for radar signal digitization affects on the one hand the on-board memory consumption and the data volume to be transmitted to the ground, but also on the other hand the quality of the SAR images. In this paper, we introduce a novel azimuth-switched quantization (ASQ) technique, which allows the implementation of non-integer quantization rates in a new, efficient way. This grants higher flexibility in terms of performance design and resource allocation, without increasing the complexity and the computational load of the quantization scheme. The presented results were obtained in the frame of the TanDEM-X mission.

Item URL in elib:https://elib.dlr.de/80639/
Document Type:Article
Additional Information:©2013 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Title:Azimuth-Switched Quantization for SAR Systems and Performance Analysis on TanDEM-X Data
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Martone, MicheleUNSPECIFIEDUNSPECIFIED
Bräutigam, BenjaminUNSPECIFIEDUNSPECIFIED
Krieger, GerhardUNSPECIFIEDUNSPECIFIED
Date:January 2014
Journal or Publication Title:IEEE Geoscience and Remote Sensing Letters
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:11
DOI :10.1109/LGRS.2013.2251603
Page Range:pp. 181-185
Publisher:IEEE - Institute of Electrical and Electronics Engineers
ISSN:1545-598X
Status:Published
Keywords:Synthetic Aperture Radar (SAR), SAR Interferometry (InSAR), TanDEM-X mission, Block Adaptive Quantization (BAQ), Azimuth-Switched Quantization (ASQ)
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:14 Jan 2013 17:38
Last Modified:31 Jul 2019 19:39

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