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Relay satellite mission scheduling method and system

A technology for task scheduling and relay satellites, applied in transmission systems, radio transmission systems, program startup/switching, etc., can solve problems such as unreasonable allocation of preparation time, waste of antenna time resources, and affecting the quality of relay services

Active Publication Date: 2018-06-22
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of this, the object of the present invention is to provide a relay satellite scheduling method and system to solve the unreasonable allocation of preparation time and the unreasonable antenna time allocation caused by the maximum static time parameter reserved in the antenna task preparation process of existing relay satellites. Waste of resources, technical issues that affect the quality of relay services

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  • Relay satellite mission scheduling method and system
  • Relay satellite mission scheduling method and system
  • Relay satellite mission scheduling method and system

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Embodiment 1

[0053]figure 1 A relay satellite task scheduling method provided by an embodiment of the present invention is shown, the method includes:

[0054] Step S110: Set initial scheduling information and obtain at least two task information;

[0055] Specifically, the foregoing initial scheduling information includes constraint conditions of iteration extremum and antenna pointing path information. The above-mentioned iteration extreme value refers to an upper limit number of iterative calculations performed by this method, which is used to obtain the optimal value of relay satellite task scheduling.

[0056] The constraint condition of the antenna pointing path information refers to the basis for judging when the relay satellite performs service insertion according to the current path. Only when the constraint condition is met can the service be inserted, otherwise it will not be allowed.

[0057] Step S120: Calculate greedy function values ​​of at least two task information respec...

Embodiment 2

[0106] figure 2 It shows the second relay satellite task scheduling method provided by the embodiment of the present invention. The difference from Embodiment 1 is that, after obtaining the feasible solution of the relay satellite task scheduling, it also includes:

[0107] Step S210: Determine whether the current number of iterations is less than the iteration limit,

[0108] If so, return the steps of calculating the greedy function values ​​of at least two task information respectively;

[0109] If not, output a feasible solution.

[0110] After obtaining the feasible solutions for the task scheduling of the relay satellite, the relay satellite repeats the above steps through iteration, so as to obtain the feasible solutions of the iteration extremum under the constraints of the iterative extremum, and select the satisfactory result for output.

[0111] image 3 The third relay satellite task scheduling method provided by the embodiment of the present invention is shown...

Embodiment 3

[0126] Embodiment 3 lists an application example of the relay satellite task scheduling method, assuming that each relay satellite is equipped with 2 single-site antennas and 1 multiple-access antenna, and the single-site antenna can provide S and Ka two frequency band relays For services, phased array antennas provide S-band multiple access services, so the two relay satellites have a total of 6 antennas for resource allocation and task scheduling. The classic dual-satellite scheduling scenario considers a task scale of 400, and its total task duration is close to the maximum service duration that all antenna resources can provide.

[0127] In addition, this embodiment also calculates and analyzes that the business scale is 200 (the total task duration is about 50% of the maximum service duration that antenna resources can provide) and 600 (the total task duration is approximately 50% of the maximum service duration that antenna resources can provide). In the case of 150%), t...

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Abstract

The invention provides a relay satellite mission scheduling method and system, and relates to the technical field of relay satellites. The method comprises the following steps: setting scheduling initial information, and acquiring at least two pieces of mission information; respectively calculating greedy function values of the at least two pieces of mission information; sequencing the greedy function values to obtain a mission sequence corresponding to the greedy function values, and establishing a mission constraint candidate list according to the sequence; updating antenna pointing path information according to the mission constraint candidate list; and acquiring a feasible solution for relay satellite mission scheduling based on a constraint condition of the antenna pointing path information. According to the relay satellite mission scheduling method provided by the invention, the technical problems of unreasonable preparation time distribution, waste of antenna time resources andinfluence on the relay service quality which are caused by the reason that the relay satellite scheduling system reserves the longest and same mission preparation time for all users are solved, and atechnical effect of optimizing the relay satellite mission scheduling is achieved.

Description

technical field [0001] The present invention relates to the technical field of relay satellites, in particular to a method and system for scheduling tasks of relay satellites. Background technique [0002] The relay satellite system refers to a space information transmission system that uses geostationary or high-orbit satellites to track, measure, control and data relay user targets such as low- and medium-orbit spacecraft and non-spacecraft. [0003] Relay satellites use the following two inter-satellite antennas to provide two inter-satellite links for user targets: single-access antennas and multiple-access phased array antennas. The operating frequency bands, information transmission rates, and service methods of these two antennas are different. In the actual task scheduling process, usually a relay satellite is configured with two single-access antennas and one multi-access phased array antenna to provide relay services. Among them, the single-access antenna points t...

Claims

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Application Information

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IPC IPC(8): H04B7/185G06F9/48
CPCG06F9/4881H04B7/18515
Inventor 匡麟玲王磊姜春晓
Owner TSINGHUA UNIV
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