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A task scheduling method based on prospective prediction

A task scheduling and task technology, applied in the direction of instruments, data processing applications, resources, etc., can solve the problem of the sharp increase of satellite storage capacity, and achieve the effect of improving utilization and reducing storage capacity.

Active Publication Date: 2019-02-22
SPACETY CO LTD (CHANGSHA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention does not involve the problem of how to match the imaging time and imaging data download time so that the ground station can receive imaging data in a timely manner while avoiding a sharp increase in satellite storage capacity

Method used

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  • A task scheduling method based on prospective prediction
  • A task scheduling method based on prospective prediction
  • A task scheduling method based on prospective prediction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Such as figure 1 As shown, the present invention discloses a task scheduling system and method based on forward-looking prediction, which at least includes a remote sensing satellite 1 and a ground station 2 communicating with each other. Remote sensing satellites can be several satellites distributed in different orbits to perform image acquisition tasks. The ground station is used to establish data communication with the remote sensing satellite, so that the control command of the ground station can be transmitted to the remote sensing satellite when the remote sensing satellite enters the communication coverage area of ​​the ground station, and at the same time, the image data collected by the remote sensing satellite can also be downloaded at this time to the ground station. The number of ground stations can be flexibly set according to actual usage requirements. For example, when the number of remote sensing satellites is increased in order to obtain more compreh...

Embodiment 2

[0044] This embodiment is a further improvement on Embodiment 1, and repeated content will not be repeated here.

[0045] Preferably, the task scheduling module completes the scheduling of remote sensing satellites by at least following the steps below to establish scheduling instructions:

[0046] S1: Preliminarily classify imaging tasks based on the associated execution area information, imaging satellites, and imaging window time to establish an imaging task set that requires at least two remote sensing satellites 1 to complete cooperatively.

[0047] Preferably, the central processing module 6 is further configured to initially classify the corresponding imaging tasks based on the real-time task demand data of a third party. Imaging tasks can be classified into the first type, the second type, and the third type, wherein the imaging tasks belonging to the first type are imaging tasks that cannot be completed without suitable satellite resources or based on other constraint...

Embodiment 3

[0059] This embodiment is a further improvement on the foregoing embodiments, and repeated content will not be repeated here.

[0060] Preferably, the task scheduling module completes the scheduling of remote sensing satellites by at least following the steps below to establish scheduling instructions:

[0061] S1: Obtain the start execution time and end execution time of an imaging task that requires at least two remote sensing satellites 1 to cooperate to complete, and filter out at least one first remote sensing satellite and at least one first remote sensing satellite that include the start execution time and end execution time respectively in the imaging time window The second remote sensing satellite selects at least one third remote sensing satellite when the combination of the imaging time windows of the first remote sensing satellite and the second remote sensing satellite cannot fully cover the execution time of the imaging task.

[0062] Preferably, the task schedul...

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PUM

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Abstract

The invention relates to a task scheduling method based on prospective prediction. Earth stations generate scheduling instructions as follows: determining at least an imaging time window in which thefirst remote sensing satellite and the second remote sensing satellite overlap each other and dividing the overlapping imaging time window into at least two sub-imaging time windows different in length from each other in the case where the current imaging task requires at least two remote sensing satellites to be accomplished in cooperation; obtaining an execution utility of at least one future execution task of each of the first remote sensing satellite and the second remote sensing satellite with respect to a current imaging task, wherein the first remote sensing satellite and the second remote sensing satellite generate the scheduling instruction in such a manner that imaging tasks and imaging data downloading tasks are alternately performed based on a sub-imaging time window. The invention sets each remote sensing satellite to execute imaging tasks and data downloading tasks in an alternating manner, and can effectively reduce the sharp increase in storage capacity of the remote sensing satellite by improving the speed of data turnover.

Description

technical field [0001] The invention relates to the technical field of scheduling control, in particular to a task scheduling method based on forward-looking prediction. Background technique [0002] The working process of imaging satellites can be briefly described as follows: receiving the observation requirements put forward by users; according to the characteristics of satellite resources, preprocessing the user's requirements to obtain standard planning input; combined with the constraints of the use of ground stations and satellites, according to specific optimization algorithms, Plan and schedule the input tasks to obtain the task scheduling scheme; plan and arrange the generated task scheduling scheme and generate instructions, inject the control instructions to the satellite through the ground station, the satellite executes the instruction for imaging and data playback, and the ground station receives the imaging Data, the data is processed and fed back to the user...

Claims

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Application Information

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IPC IPC(8): G06Q10/06
CPCG06Q10/06312
Inventor 任维佳杨峰杜志贵向晓霞
Owner SPACETY CO LTD (CHANGSHA)
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