Research on emergency mission planning of earth observation satellites

Emergency observations are tasks executed by earth observation satellites to support emergency ground campaigns. Different from conventional observations, they are usually unpredictable, urgent, concentrative and vital important, and the mission planning problem is difficult. Firstly, main attributes of satellites and tasks were given, and conditions for successful emergency observation tasks were analyzed. Secondly, a planning model was built, including an improved objective based on both task profit and timeliness, and the constraints to satisfy. And then genetic algorithm was used to solve the model. Finally, a case was calculated to verify the effectiveness of the model and algorithm put forward.