Multi-satellite multi-station data downloading scheduling method and system

A scheduling method and data technology, applied in the field of satellite scheduling, can solve the problem of high ground station load, achieve low sensitivity, improve solution efficiency and effect

Active Publication Date: 2021-04-30
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Aiming at the deficiencies of the prior art, the present invention provides a multi-satellite and multi-station data downlink scheduling method and system, which solves the pro...

Method used

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  • Multi-satellite multi-station data downloading scheduling method and system
  • Multi-satellite multi-station data downloading scheduling method and system
  • Multi-satellite multi-station data downloading scheduling method and system

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Embodiment 1

[0066] First aspect, such as figure 1 As shown, the embodiment of the present invention provides a multi-satellite multi-station data downlink scheduling method, which specifically includes:

[0067] S1. According to the cut-off time of the imaging request required by the user, determine the latest download end time of the task.

[0068] The deadline dt for the imaging request requested by the user i , set as the latest download end time of the observation task Lde i The upper bound of Lde i ≤dt i .

[0069] S2. Set the imaging weights of the tasks to be planned, arrange them in descending order, and store them in the task set.

[0070] The imaging weight of the set observation task to be planned is calculated by the following formula:

[0071]

[0072] Among them, w i Indicates the task weight, p i Indicates the priority of the observation task to be planned, p i ∈[1,10], the task priority is usually directly obtained according to user needs, p i The larger the v...

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Abstract

The invention provides a multi-satellite multi-station data downloading scheduling method and system, and relates to the technical field of satellite scheduling. According to the imaging request deadline requirement required by a user, the latest task downloading end time is calculated, the task imaging weight is defined, clustering is carried out according to a satellite downloading time window, and an available ground station is selected for data downloading. Different from data downloading scheduling based on greedy rules and the like in previous research, a downloading scheduling strategy based on task deadline is provided, so that the downloading time sensitivity of a currently planned task is relatively low, and the solving efficiency and effect are improved.

Description

technical field [0001] The invention relates to the technical field of satellite scheduling, in particular to a multi-satellite and multi-station data downlink scheduling method and system. Background technique [0002] Multi-satellite multi-station integrated scheduling involves multiple satellites, multiple observation tasks, and multiple ground stations. It refers to allocating resources to The imaging tasks and data downloading tasks corresponding to multiple competing requirements, and determine the start and end time of each task, so as to meet the needs of users to the greatest extent. [0003] The main difference between multi-satellite and multi-station integrated scheduling and single-satellite scheduling is that there may be multiple satellites with imaging capabilities for the same observation task, so there are more choices for the arrangement of observation tasks. Compared with the limitation that non-agile satellites can only image when they fly over the targ...

Claims

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Application Information

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IPC IPC(8): H04B7/185
CPCH04B7/1851H04B7/18519H04B7/18586
Inventor 胡笑旋唐玉芳靳鹏夏维马华伟唐奕城罗贺王国强孙海权王俊程一玲
Owner HEFEI UNIV OF TECH
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