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An inter-satellite link communication method for low-orbit satellite constellation

An inter-satellite link and communication method technology, applied in the field of satellite communication, can solve the problems of reduced spectrum utilization efficiency, complexity, timing, synchronization, and high search window mechanism requirements, and achieves simple timing requirements, high real-time performance, and reduced synchronization. The effect of window search computation

Inactive Publication Date: 2018-09-11
BEIJING XINWEI TELECOM TECH
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  • Claims
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Problems solved by technology

It can be seen that the traditional TDD mode is more complicated and has higher requirements on timing, synchronization, and search window mechanism. If the traditional TDD mode is used to realize long-distance transmission communication such as the inter-satellite link, as the transmission delay increases, The efficiency of spectrum utilization will be significantly reduced

Method used

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  • An inter-satellite link communication method for low-orbit satellite constellation
  • An inter-satellite link communication method for low-orbit satellite constellation
  • An inter-satellite link communication method for low-orbit satellite constellation

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Embodiment Construction

[0016] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of the embodiments of the present invention, rather than all the embodiments; it should be noted that, in the case of no conflict, the embodiments in the application and the features in the embodiments can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0017] The basic situation of the LEO satellite constellation in this embodiment is: the satellite orbit height is 850km, the orbital plane inclination is 86°, 10 stars are evenly d...

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Abstract

The invention provides an intersatellite link communication method of a low earth orbit satellite constellation. The intersatellite link adopts a TDD communication mode, and an intersatellite link transmission time delay is greater than a transmitting time slot length. The intersatellite link communication method is characterized in that transceiving time slots of all of the satellites of the constellation are strictly synchronized, and during the transmitting time slots, all the satellites of the constellation are used to transmit signals to the satellite used to build the intersatellite link at the same time, and during the receiving time slots, all of the satellites of the constellation are used to receive signals at the same time. Compared with the conventional TDD mode, synchronization mechanism and timing requirements are simpler, and at the same time, a synchronization window searching calculation amount is greatly reduced, and real-time performance is excellent, and occupied frequency spectrum resources are less.

Description

technical field [0001] The invention relates to the field of satellite communication, in particular to an inter-satellite link communication method of a low-orbit satellite constellation. Background technique [0002] There are two ways for LEO communication satellite constellation to achieve communication routing, one is through the establishment of inter-satellite links, and the other is through the deployment of ground stations around the world. Due to the large regional restrictions on the deployment of ground stations in my country, and the ground stations are vulnerable to damage under special circumstances, the development of my country's LEO communication satellite system must establish inter-satellite links to reduce the dependence on ground stations and at the same time reduce the Signal transmission delay improves the survivability and mobility of the entire system. [0003] There are two ways to realize the establishment of LEO inter-satellite links: (1) FDD way;...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J3/06H04B7/185
Inventor 蒋伯峰苏成翔宋永亮
Owner BEIJING XINWEI TELECOM TECH
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