Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

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
View PDF11 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 problem that the existing data downlink technology is carried out after completing the satellite observation task planning, which is prone to ground station load overload high technical issues

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • 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

Examples

Experimental program
Comparison scheme
Effect test

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...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com