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Automated Scheduling for TerraSAR-X/TanDEM-X

Lenzen, Christoph and Wörle, Maria Th. and Mrowka, Falk and Geyer, Michael P. and Klaehn, Rüdiger (2011) Automated Scheduling for TerraSAR-X/TanDEM-X. IWPSS 2011, 08-10 June 2011, Darmstadt, Germany.



In 2007 the satellite TSX-1 of the mission TerraSAR-X has been launched. Its primary payload is an active radar instrument, which shall supply radar images on request for commercial and scientific users. With a maximum load of up to 1000 datatake requests per day and an order deadline of six hours before uplink, the command generation process had to be fully automated. The complexity of the satellite and the evolving knowledge of its constraints exposed further challenges on implementation of the scheduling process. In 2010 a copy of TSX-1 has been launched: the TDX-1 satellite. When operating in close formation (i.e. distances of 250m-400m) this pair of satellites may execute stereoscopic datatakes which allow the generation of a digital elevation model. However several inter-satellite constraints need to be taken into account when operating at such short distances. Additionally we have two distinct missions, which need to be merged together: First, we have the old TerraSAR-X mission, for which the customers usually ingest their high-priority orders very late, for example for disaster monitoring. Second, we have the TanDEM-X mission, whose goal is a complete coverage of the earth in 3D with best possible accuracy. For this mission the datatakes are calculated up to one year in advance. This paper shows what techniques have been developed in order to cope with the challenging requirements of combining two missions and handling a two-satellites-system.

Item URL in elib:https://elib.dlr.de/74101/
Document Type:Conference or Workshop Item (Speech)
Title:Automated Scheduling for TerraSAR-X/TanDEM-X
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Lenzen, ChristophChristoph.Lenzen (at) dlr.dehttps://orcid.org/0000-0003-3542-6303
Klaehn, RüdigerHeavens AboveUNSPECIFIED
Date:8 June 2011
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:planning scheduling TerraSAR-X TanDEM-X formation multi-satellite "Resource Model" "Gliding Window" "Thermal Window"
Event Title:IWPSS 2011
Event Location:Darmstadt, Germany
Event Type:international Conference
Event Dates:08-10 June 2011
HGF - Research field:Aeronautics, Space and Transport, Aeronautics, Space and Transport (old)
HGF - Program:Space, Space (old)
HGF - Program Themes:Earth Observation, W EO - Erdbeobachtung
DLR - Research area:Raumfahrt, Space
DLR - Program:R EO - Earth Observation, W EO - Erdbeobachtung
DLR - Research theme (Project):R - Projekt TanDEM-X (old), R - Projekt TerraSAR-X Missionsbetrieb (old), W - Projekt TerraSAR-X Missionsbetrieb (old), W - Projekt TanDEM-X (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Space Operations and Astronaut Training > Mission Operations
Deposited By: Lenzen, Christoph
Deposited On:23 Jan 2012 17:50
Last Modified:31 Jul 2019 19:34

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