Multi-objective optimization scheduling method and system for remote-sensing satellite earth stations

Abstract

The invention provides a multi-objective optimization scheduling method and system for remote-sensing satellite earth stations. According to the multi-objective optimization scheduling method, a complicated resource scheduling process can be refined and decomposed through five stages of screening processes such as ability screening, state screening, conflict screening, optimization screening and configuration screening so as to obtain a multi-objective resource scheduling result; and the optimization screening process can be designed on the basis of a weighted summation method so as to realizea multi-objective resource scheduling method architecture. Through the method and system, the using rate of resources of current earth stations and the balance of resource loads can be enhanced, andmeanwhile, the influences, on system task quality and task success rate, of performance differences between the resources are reduced.

Description

technical field [0001] The invention relates to the application field of satellite ground stations, in particular to a multi-objective optimal scheduling method and system for remote sensing satellite ground stations. Background technique [0002] With the development of aerospace technology and applications, more and more remote sensing satellites are in orbit at the same time, making the receiving resources of satellite ground stations face more and more serious multi-satellite scheduling conflicts. Therefore, it is of great significance to study the scheduling strategy and optimization method of multi-satellite equipment and realize the unified scheduling and optimal utilization of satellite ground station system equipment to improve the quality of space data transmission tasks and the use efficiency of ground station equipment. [0003] According to the existing domestic ground station operation experience, the allocation of resources often adopts a first-come, first-ser...

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Problems solved by technology

[0003] According to the existing domestic ground station operation experience, the allocation of resources often adopts a first-come, first-served strategy. Due to this prerequisite, resource conflicts between tasks often occur and subsequent tasks have to be rejected, resulting in resource usage of the ground station. The saturation has remained at a very low level for a long time; at the same time, most of the resources used by the ground station adopt a fixed priority allocation strategy. This allocation method will lead to polarization in the utilization rate of ground station resources, and some resources with high priority will continue to In a high-load working state, resources with low priority are idle for a long time; even if the indicators of various resources of the ground station are the same, there may be deviations in performance, and there may be differences in the support capabilities for different satellite tasks. The resource scheduling of the ground station has not given special consideration in this direction, ignoring the impact of such differences on the mission. In the long run, the improvement of the mission execution quality and mission success rate of the ground station has been restricted.

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