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Task split and aggregation-based data relay satellite system task planning method

A technology for mission planning and satellite systems, applied in the field of satellite communications, can solve problems such as low efficiency in type mission planning, differential distinction between mission diversity and mission requests, etc.

Active Publication Date: 2018-05-18
XIDIAN UNIV
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  • Abstract
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Problems solved by technology

[0003] To sum up, the problem existing in the existing technology is that the planning efficiency of some types of tasks is low due to the diversity of tasks in the spatial information network without distinguishing the differences of task requests.

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  • Task split and aggregation-based data relay satellite system task planning method
  • Task split and aggregation-based data relay satellite system task planning method
  • Task split and aggregation-based data relay satellite system task planning method

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Embodiment Construction

[0043] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0044] The invention solves the problem of long transmission time and low task planning efficiency in the traditional task planning algorithm, improves the task planning efficiency and resource utilization rate in the data relay satellite network, and can be used for data relay satellite system task planning the process of.

[0045] The application principle of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0046] Such as figure 1 As shown, the data relay satellite system task planning method based on task splitting and aggregation provided by the embodiment of the...

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Abstract

The invention belongs to the satellite communication technical field and discloses a task split and aggregation-based data relay satellite system task planning method. According to the method, tasks in a network are split and aggregated; a feasible solution sequence is constructed for the preprocessed tasks; local search is performed on the constructed feasible solutions; and a task planning result is outputted. According to the method of the present invention, task demand from user requests is converted into task elements with higher planning efficiency through task preprocessing; and tasks requiring long transmission time are split into a plurality of task elements, and tasks which require short transmission time, are high in scheduling window coincidence rate, and have near requesting satellite positions are merged into one task element. With the method of the invention adopted, the planning efficiency of tasks requiring long transmission time and short transmission time of a traditional task planning algorithm can be solved; and the task planning efficiency and resource utilization rate of the data relay satellite network can be improved. The method can be used for the task planning process of the data relay satellite system.

Description

technical field [0001] The invention belongs to the technical field of satellite communication, and in particular relates to a task planning method for a data relay satellite system based on task splitting and aggregation. Background technique [0002] With the continuous development of space science and technology, the number of satellites in orbit continues to increase, and the amount of data that needs to be sent back to the ground also continues to increase. However, due to the limited visibility time of low-orbit satellites and ground stations and the long return visit time, the timeliness of on-orbit data return is seriously restricted. Tracking and data relay satellites located in geosynchronous orbits (hereinafter referred to as relay satellites) have a relatively high orbital altitude, and can effectively expand the communication window length between low-orbit satellites and ground stations by providing data relay. The satellite system plays an important role in t...

Claims

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Application Information

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IPC IPC(8): G06Q10/04G06Q10/06G06Q50/30
CPCG06Q10/04G06Q10/0631G06Q50/40
Inventor 刘润滋唐成圆盛敏李建东张琰汪宇周笛朱彦朱乙婷
Owner XIDIAN UNIV
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