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Dynamic inter-satellite network route planning method based on hybrid strategy

A hybrid strategy and routing technology, applied in data exchange networks, radio transmission systems, digital transmission systems, etc., can solve problems such as communication performance degradation, and achieve the effect of fewer hops and shorter time.

Active Publication Date: 2017-10-27
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Optimizing with one aspect of the target strategy often leads to degraded communication performance on the other

Method used

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  • Dynamic inter-satellite network route planning method based on hybrid strategy
  • Dynamic inter-satellite network route planning method based on hybrid strategy
  • Dynamic inter-satellite network route planning method based on hybrid strategy

Examples

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Embodiment 1

[0055] In this embodiment, it is a hybrid strategy-based dynamic inter-satellite network routing planning method based on shortest time minimum hops (MTMJ) priority. The algorithm starts from the first time slot, and in each time slot, search for the destination satellites that have measurement links with each satellite in the initial satellite set in this time slot, and then search for all destination satellites that can be reached in this time slot Select the path with the shortest number of hops as the routing path of the destination satellite among all the reachable paths in , and add the destination satellite to the starting satellite set to participate in the next search until all the routing paths of the destination satellites are found. Its input data is the topology structure T and the navigation satellite set S, and the output result is the inter-satellite routing set SR.

[0056] like figure 2 As shown, the implementation steps of the hybrid strategy-based dynamic...

Embodiment 2

[0065] Different from the first embodiment, this embodiment is a hybrid strategy-based dynamic inter-satellite network routing planning method based on the least hops and shortest time (MJMT) priority. The algorithm starts from the first hop, and at each hop, search for the target satellites that have measurement links in all time slots with each satellite in the initial satellite set, and then search for all target satellites that can be reached in this hop Select the path with the shortest time in the reachable path as the routing path of the destination satellite, and add the destination satellite to the initial satellite set to participate in the next search until all the routing paths of all the destination satellites are found. Its input data is the topology structure T and the navigation satellite set S, and the output result is the inter-satellite routing set SR.

[0066] like image 3 As shown, the implementation steps of the hybrid strategy-based dynamic inter-satel...

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Abstract

The invention discloses a dynamic inter-satellite network route planning method based on a hybrid strategy. The method comprises the steps of starting from a first time slot or hop with an unplanned satellite s in a navigation satellite set S as a starting satellite, searching a target satellite which has a measurement link with each satellite in the start satellite set in a time slot or hop in each time slot or hop, then taking a path with a shortest hop or time in all reachable paths which can reach the target satellite in the time slot or hop as the route path of the target satellite, and adding the target satellite into the start satellite set to participate a next time of search until the route paths of all target satellites are found, wherein input data is a topology structure T and the navigation satellite set S, and an output result is inter-satellite route set SR. According to the method, the shortest time and shortest hop of data consumed in inter-satellite link transmission can be realized.

Description

technical field [0001] The invention relates to an aerospace navigation satellite mission planning technology, in particular to a dynamic inter-satellite network routing method based on a hybrid strategy. Background technique [0002] The inter-satellite link of the navigation system is an on-board system that realizes two-way ranging and data exchange between navigation satellites through radio transmitting and receiving equipment. Through the inter-satellite link, it is not only possible to use the inter-satellite precise ranging to improve the geometric layout constraints of the ground orbit determination network, improve the orbit determination and time synchronization accuracy of the navigation satellite, but also use the inter-satellite data transmission to improve the update of the navigation ephemeris. frequency, greatly improving the performance level of the satellite navigation system. The construction of inter-satellite links is of decisive significance to the de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/185H04L12/721H04L12/733H04L45/122
CPCH04B7/18584H04L45/12H04L45/122
Inventor 刘晓路姚锋张忠山闫俊刚贺仁杰邢立宁王涛陈宇宁吕济民陈成陈盈果褚骁庚何永明
Owner NAT UNIV OF DEFENSE TECH
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