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Topology optimization method of satellite system

A satellite system and topology optimization technology, applied in the field of satellite system topology optimization

Inactive Publication Date: 2016-09-07
BEIJING INST OF SPACECRAFT SYST ENG
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no effective method for the reliability, robustness and invulnerability of satellite navigation system network topology

Method used

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  • Topology optimization method of satellite system
  • Topology optimization method of satellite system
  • Topology optimization method of satellite system

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Experimental program
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Embodiment

[0170] Such as Figure 6 As shown, it is a system topology diagram of a satellite system. First, the system topology is not in the running state (Running=0), and the method of the present invention is used to determine the integrity key point.

[0171] Calculate each index value of each node, as shown in Table 3 below, and perform index screening by the method of maximum irrelevance.

[0172] Table 3 Each index value of each node

[0173]

Indicator 1

Indicator 2

Indicator 3

Indicator 4

Indicator 5

Indicator 6

Indicator 7

node 1

0.8000

0.9600

1.0000

0.0217

0.2099

92.0000

3.5333

node 2

0.9000

0.9900

1.0000

0.0217

0.2099

92.0000

3.5333

node 3

0.9000

0.9600

1.0000

0.0217

0.2099

92.0000

3.5333

node 4

0.9500

0.9900

4.0000

0.0313

0.6543

1216.0000

11.5167

node 5

0.8500

0.9700

2.0000

0.0333

0.6049

600.0000

9.35...

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Abstract

The invention provides a topology optimization method of a satellite system. Devices of a spacecraft are extracted to nodes; if the system does not run, complete key nodes are searched to implement topology optimization, and the system is adjusted to an operation state when optimization is completed; when the system runs and optimization is needed, topology optimization based on node reliability and topology optimization based on weighted load flow are carried out simultaneously till standby paths do not exist between any two nodes. The influence degree of each node on the system is analyzed quantitatively; disadvantages of a network node significance analysis method, in the prior art, applied to the satellite system are overcome; and according to the topology optimization method of the invention, the complete key nodes are reinforced when the system does not run, topology optimization is carried out on the nodes in real time when the system runs, influence of failure of each node on the system operation is effectively reduced, and the reliability, robustness and survivability of network topology of the satellite system are improved.

Description

technical field [0001] The invention relates to a satellite system topology optimization method, which belongs to the technical field of spacecraft single-event soft error protection. Background technique [0002] The satellite system will be affected by single particles in the space environment. When a certain device in the satellite system causes a logic error or failure due to the radiation effect of a single particle, it will affect the normal and reliable operation of the entire satellite system. [0003] In order to resist the single event effect in the space environment, it is necessary to guarantee the reliability of the satellite system at the system level. An advanced method is to abstract the equipment and its connection relationship in the satellite system into a network. Due to the scale-free network and the small-world network The introduction of the theory makes people realize that some extremely small factors in the network system may have a large-scale impac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L12/751H04L45/02
CPCH04L41/12H04L45/02
Inventor 林益明于登云郑晋军张弓杨聪伟刘安邦门爱东姜竹清宋洪超娄英欣
Owner BEIJING INST OF SPACECRAFT SYST ENG
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