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GENERATION OF AN OPTIMUM TARGET TRAJECTORY FOR THE TERRASAR-X

D´Amico, S. and Arbinger, Ch. and Kirschner, M. and Campagnola, S. (2004) GENERATION OF AN OPTIMUM TARGET TRAJECTORY FOR THE TERRASAR-X. 18th Int. Symposium on Space Flight Dynamics, 11-15 Oct. 2004 , Munich.

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Abstract

TerraSAR-X (TS-X) is a new generation, high resolution synthetic aperture radar (SAR) satellite for scientific and commercial applications. The launch of the satellite into a sun-synchronous dusk-dawn orbit with an 11-day repeat period is planned on top of a Russian DNEPR-1 rocket for 2006. The requirement for the TS-X orbit is that the spacecraft shall fly over the same regions following identical flight paths relative to ground. The most important orbit control requirement is to maintain the satellite osculating orbit within a maximum absolute distance of 250 m from a target orbit. For dedicated operations this prescribed maximum distance is lowered to 10 m. This paper addresses the design and computation of the target path, the so-called reference orbit. The high accuracy orbit control requirements pose tight constraints on the generation of the target trajectory. Due to the high non-linearity of the problem, former strategies based solely on analytical calculus are not accurate enough. Instead the combination of numerical perturbation analysis and sequential optimization is shown to be more effective. It enables automation of the analysis and can be easily applied to all Earth remote sensing satellites.

Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=2005,
Title:GENERATION OF AN OPTIMUM TARGET TRAJECTORY FOR THE TERRASAR-X
Authors:
AuthorsInstitution or Email of Authors
D´Amico, S.UNSPECIFIED
Arbinger, Ch.UNSPECIFIED
Kirschner, M.UNSPECIFIED
Campagnola, S.UNSPECIFIED
Date:2004
Status:Published
Event Title:18th Int. Symposium on Space Flight Dynamics, 11-15 Oct. 2004 , Munich
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W SY - Technik für Raumfahrtsysteme
DLR - Research area:Space
DLR - Program:W SY - Technik für Raumfahrtsysteme
DLR - Research theme (Project):UNSPECIFIED
Location: Oberpfaffenhofen
Institutes and Institutions:Space Operations and Astronaut Training > Hauptabteilung Raumflugbetrieb und Astronautenausbildung
Deposited By: Sabine Klaas
Deposited On:16 Sep 2005
Last Modified:14 Jan 2010 17:33

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