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A method for establishing inter-satellite link of Beidou navigation system

A Beidou navigation system and inter-satellite link technology, applied in the field of inter-satellite link establishment, can solve the problem of only considering inter-satellite ranging and antenna pointing, without considering the influence of satellite inter-satellite link establishment, and system performance degradation and other problems to achieve the effect of rapid and effective establishment

Inactive Publication Date: 2019-01-11
CHINA XIAN SATELLITE CONTROL CENT
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Problems solved by technology

The offline algorithm usually used in navigation constellations only considers inter-satellite ranging, antenna pointing and other issues, and does not consider the impact of possible satellite failures on inter-satellite link building
Therefore, when some of the inter-satellite links in the constellation fail, the system performance will be significantly degraded, resulting in the interruption of a large number of existing links
However, if a fully dynamic link building algorithm is used, the regularity and predictability of satellite operation will be ignored, resulting in a sharp increase in routing costs

Method used

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  • A method for establishing inter-satellite link of Beidou navigation system
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  • A method for establishing inter-satellite link of Beidou navigation system

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, and the present invention includes but not limited to the following embodiments.

[0017] The present invention comprises the following steps:

[0018] 1. Satellite logical address addressing is to assign a unique address to all network nodes in order to distinguish network nodes. Assuming that there is an initial static state in the network, use to represent the address of a certain node, where m is the serial number of the node in the same orbital plane, and n is the serial number of the orbital plane. Among the nodes in the whole network, the node closest to the central position is selected as the master node.

[0019] 2. Fault status information transmission, all satellites receive the status information of the faulty satellite. When the satellite receives the fault state information of other satellites, it forwards its fault state information to t...

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Abstract

The invention provides a method for establishing the inter-satellite links of a Beidou navigation system. The method is used for solving the problem in the prior art that the communication cannot be realized due to the fact that a satellite body in a link-establishing planning chart for the preset inter-satellite links of a Beidou navigation system in China breaks down. According to the technical scheme of the invention, firstly, a logical address is set for each satellite in the system. After that, the fault state information of a satellite is added into the information of the Beidou navigation system. In this way, the fault occurring moment of the satellite body can be shown. Based on the fault information delivery policy, all satellites in the system can acquire the state information of a faulty satellite. Meanwhile, the fault state information of the satellite is written into a temporary chart through updating the temporary chart of the link-establishing planning chart. Finally, the updated temporary chart and a node satellite chart are read, so that the new links of the Beidou navigation system are established. The establishing accuracy and the establishing timeliness of the inter-satellite links of the Beidou navigation system are improved.

Description

technical field [0001] The invention belongs to the field of aerospace measurement and control, and in particular relates to a method for establishing an inter-satellite link. Background technique [0002] The application of inter-satellite links in the Beidou navigation system has brought many new problems, among which the link establishment problem is particularly critical. Scholars at home and abroad have proposed many link-building algorithms based on inter-satellite links. These algorithms use off-line pre-computation for the calculation of link building to reduce the amount of real-time calculations on the satellite. [0003] All link calculations in this offline algorithm are performed offline. According to the periodicity and predictability of satellite operation, the satellite operation period is discretized into several time slices, and the topology results are considered to be different in each time slice. changes, calculated according to some optimization criter...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/08G01S19/20
CPCG01S19/08G01S19/20
Inventor 杨天社赵静杨宜康王徐华李肖瑛刘兴淼张海龙高宇赵国强李方正吴冠张蔚
Owner CHINA XIAN SATELLITE CONTROL CENT
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