TanDEM-X: A radar interferometer with two formation-flying satellites

被引：184

作者：

Krieger, Gerhard ^{[1
]}

Zink, Manfred ^{[1
]}

Bachmann, Markus ^{[1
]}

Braeutigam, Benjamin ^{[1
]}

Schulze, Daniel ^{[1
]}

Martone, Michele ^{[1
]}

Rizzoli, Paola ^{[1
]}

Steinbrecher, Ulrich ^{[1
]}

Antony, John Walter ^{[1
]}

De Zan, Francesco ^{[1
]}

Hajnsek, Irena ^{[1
]}

Papathanassiou, Kostas ^{[1
]}

Kugler, Florian ^{[1
]}

Cassola, Marc Rodriguez ^{[1
]}

Younis, Marwan ^{[1
]}

Baumgartner, Stefan ^{[1
]}

Lopez-Dekker, Paco ^{[1
]}

Prats, Pau ^{[1
]}

Moreira, Alberto ^{[1
]}

机构：

[1] German Aerosp Ctr DLR, Microwaves & Radar Inst, D-82234 Oberpfaffenhofen, Germany

来源：

ACTA ASTRONAUTICA | 2013年 / 89卷

关键词：

Remote sensing; Formation flying; Synthetic aperture radar (SAR); Interferometry; Digital elevation model; Earth observation; SAR INTERFEROMETRY; MULTISTATIC SAR; BISTATIC SAR; CALIBRATION;

D O I：

10.1016/j.actaastro.2013.03.008

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

TanDEM-X (TerraSAR-X add-on for Digital Elevation Measurements) is an innovative formation-flying radar mission that opens a new era in spaceborne radar remote sensing. The primary objective is the acquisition of a global digital elevation model (DEM) with unprecedented accuracy (12 m horizontal resolution and 2 m relative height accuracy). This goal is achieved by extending the TerraSAR-X synthetic aperture radar (SAR) mission by a second, TerraSAR-X like satellite (TDX) flying in close formation with TerraSAR-X (TSX). Both satellites form together a large single-pass SAR interferometer with the opportunity for flexible baseline selection. This enables the acquisition of highly accurate cross-track interferograms without the inherent accuracy limitations imposed by repeat-pass interferometry due to temporal decorrelation and atmospheric disturbances. Besides the primary goal of the mission, several secondary mission objectives based on along-track interferometry as well as new bistatic and multistatic SAR techniques have been defined, representing an important and innovative asset of the TanDEM-X mission. TanDEM-X is implemented in the framework of a public private partnership between the German Aerospace Center (DLR) and EADS Astrium GmbH. The TanDEM-X satellite was successfully launched in June 2010 and the mission started its operational data acquisition in December 2010. This paper provides an overview of the TanDEM-X mission and summarizes its actual status and performance. Furthermore, results from several scientific radar experiments are presented that show the great potential of future formation-flying interferometric SAR missions to serve novel remote sensing applications. (c) 2013 IAA. Published by Elsevier Ltd. All rights reserved.

引用

页码：83 / 98

页数：16

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