IP based satellite-earth forwarding and satellite networking integrated system of GEO satellites

A satellite and inter-satellite technology, applied in the field of satellite system design, can solve the problems of high weight and power consumption, unfavorable to system miniaturization design, poor equipment inheritance, etc., to improve inheritability, realize miniaturization design, improve system performance effect

Active Publication Date: 2016-01-20
CHINA ACADEMY OF SPACE TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The number of beams for on-board switching is different for each GEO satellite. The on-board switching equipment designs the corresponding number of ports according to the number of beams. The structures of the on-board switching equipment used by different satellites are different, which makes the equipment inheritance poor.
Different beams or different channels of the same beam correspond to different modem modules in the on-board switching equipment. The number of modules is large, and the volume, weight and power consumption of the system are large, which is not conducive to the miniaturization design of the system.

Method used

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  • IP based satellite-earth forwarding and satellite networking integrated system of GEO satellites
  • IP based satellite-earth forwarding and satellite networking integrated system of GEO satellites
  • IP based satellite-earth forwarding and satellite networking integrated system of GEO satellites

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as image 3 As shown, the No. 1 satellite works in the combined beam mode (the ground beam 1 and the ground beam 3 work), the No. 2 satellite works in the combined beam mode (the ground beam works), and the two satellites only realize the inter-beam and The business communication within the same beam does not carry out inter-satellite networking communication.

[0029] The on-board IP router B in the satellite-on-board IP module 5 of No. 1 satellite is in cold backup (shutdown does not work under normal circumstances). After the uplink signal of the ground beam 1 of No. 1 satellite passes through the second uplink frequency conversion module 2, the signal changes from the Ku / Ka frequency band to the C frequency band signal, and the signal enters the digital frequency division module of the multi-mode demodulator 1 of the on-board IP module 5 1. The switch 1 of the multi-mode demodulator 1 gates the input port of the demodulation channel 1 and the first output port...

Embodiment 2

[0033] Such as Figure 4 As shown, the No. 1 satellite works in the independent beam mode (the inter-satellite beam and the ground beam 1, 2, 3 work), the No. 2 satellite works in the independent beam mode (the inter-satellite beam and the ground beam work), and the two satellites are both Realize business communication and realize inter-satellite networking communication at the same time.

[0034] The on-board IP router B in the satellite-on-board IP module 5 of No. 1 satellite is in cold backup (shutdown does not work under normal circumstances). After the inter-satellite beam uplink signal of No. 1 satellite passes through the first uplink frequency conversion module 1, the signal changes from the Ku / Ka frequency band to the C frequency band signal, and the switch 1 of the multi-mode demodulator 1 of the on-board IP module 5 selects the demodulation channel 1 input port and the first input port of multi-mode demodulator 1, the inter-satellite beam uplink signal enters demo...

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Abstract

The invention relates to an IP based satellite-earth forwarding and inter-satellite networking integrated system of GEO satellites. GEO inter-satellite networking between a No.1 satellite and a No.2 satellite is realized via inter-satellite wave beams, the No.1 satellite covers three to-earth wave beams and one inter-satellite wave beam, and the No.2 satellite covers one to-earth wave beam and one inter-satellite wave beam. The system comprises four uplink frequency conversion modules, one spaceborne IP module and four downlink frequency conversion amplification modules of the No.1 satellite as well as two uplink frequency conversion modules, two uplink mixing bridges, one spaceborne IP module, two downlink mixing bridges and two downlink frequency conversion amplification modules of the No.2 satellite. The satellite IP technology is used to realize satellite routing and switching functions to solve the problems in inter-satellite networking and routing management in satellite switching and greatly improve the system performance of satellites; the system can satisfy requirements for switching of different numbers of wave beams, different satellites use the spaceborne IP modules of the same function and structure, and the inheritance of the system is improved; and two work mode can be switched in use, different wave beams of the satellite can use the same modulation and demodulation channel, and the system can be miniaturized.

Description

technical field [0001] The invention relates to an integrated system of IP-based satellite-ground forwarding and inter-satellite networking of GEO satellites, and belongs to the technical field of satellite system design. Background technique [0002] The traditional GEO satellite network uses satellites as relay stars. The signal is uploaded to GEO, amplified by GEO, and then transmitted to the GEO coverage area by broadcasting after frequency shifting. GEO is equivalent to a wireless repeater. Without direct communication between satellites, GEO satellite inter-satellite networking and satellite constellation cannot be realized. [0003] The information exchange and sharing of the traditional GEO satellite network is mainly carried out at the physical layer and the data link layer. This network is mainly based on the ground network, and the routing and exchange are mainly completed on the ground network. Transparent transponder composition. With the needs of wireless res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/185
CPCH04B7/1851H04B7/18521
Inventor 陈香萍金星毛新宏邹恒光李殷乔刘波
Owner CHINA ACADEMY OF SPACE TECHNOLOGY
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