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Mathematical Problems in Engineering
Volume 2015, Article ID 731734, 31 pages
http://dx.doi.org/10.1155/2015/731734
Research Article

Imaging-Duration Embedded Dynamic Scheduling of Earth Observation Satellites for Emergent Events

1State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing 100875, China
2Key Laboratory of Environment Change and Natural Disaster, Ministry of Education, Beijing Normal University, Beijing 100875, China
3School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou 221116, China

Received 22 December 2014; Revised 9 May 2015; Accepted 13 May 2015

Academic Editor: Ivanka Stamova

Copyright © 2015 Xiaonan Niu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Supplementary Material

The Supplementary Material presents the compact task merging method in satellite scheduling in detail. In the material, the constraints of task merging, including the slewing angle related constraint and the time window related constraint are given. Moreover, the method of calculations for the time window and slewing angle of a compact composite task is presented.

In section 1, the compact task merging method is proposed. In section 2, the sufficient and necessary condition when two tasks can be merged is proved by enumerating the relationship between the two tasks' time windows and durations of task execution. In section 3, the slewing angle of a compact composite task is proved to be smallest one among all of the possible imaging strategies. In section 4, a strategy regarding the construction of multiple meta-tasks to a compact composite task is introduced.

  1. Supplementary Material