A Regional Task Decomposition Method for Space-Earth-Earth Observation

Abstract

The invention provides a region task decomposition method of ground-air-space earth observation. The method comprises that a region task is decomposed into resource observing subtasks according to time constrained conditions; and according to positional relation among the subtasks, and the regional task is decomposed into meta-tasks. The region task is decomposed into the meta-tasks that can be observed by four types of observation resources in a combined way, and the method can adapt to the ground-air-space integrated development trend and the coordinated observation requirement. The capacity of the observation resources and the time constraint conditions of the tasks are taken into consideration, space errors of task boundaries in a grid decomposition method are avoided effectively, the quantity of meta-tasks is reduced effectively, and the subsequent meta-task distribution efficiency is improved greatly.

Description

technical field [0001] The invention relates to the field of space-space-ground integrated earth observation, and more specifically, to a regional task decomposition method for space-space-ground earth observation. Background technique [0002] At present, in order to cope with the increasingly serious geological disasters such as landslides, debris flows and earthquakes in my country, and the post-disaster monitoring and remote sensing data acquisition needs of man-made disasters such as forest fires and marine oil spills, my country has gradually formed a variety of temporal and spatial resolutions, a variety of spectral information, Multi-sensor space-space-ground integrated observation system. Since space-to-ground observation resources such as satellites, unmanned aerial vehicles, airships, and ground monitoring vehicles are different in their operating modes, maneuverability, and load indicators, the coordinated observation of multiple types of space-to-earth observatio...

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Problems solved by technology

[0005] However, the existing technology also lacks pertinence. It is only a regional task division method for a single type of observation resources such as satellites, without considering the observation characteristics of unmanned aerial vehicles, airships, etc. that are not restricted by orbits, and the differences of ground sensors such as ground monitoring vehicles. , obviously cannot meet the needs of collaborative planning of space-space-ground heterogeneous resources

The advantage of the grid-based task decomposition method is that it is easy to understand and easy to implement. However, in order to complete the observation of a single grid at one time for space and ground resources, the size of the grid division should be determined according to the minimum width of multiple types of observation resources. As a result, the number of grid meta-tasks has exploded, resulting in extremely low efficiency in the constraints between meta-tasks, the determination of conflict relationships, and the matching between observation resources and tasks. When disasters occur, observation efficiency is often low. The first priority of mission execution

[0006] Secondly, since the real world entities do not have clear grid boundaries, the essence of gridding the observation tasks is a rough simulation of the real space, so the gridded geographical tasks will cause certain spatial errors to the observation tasks

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