A highly reliable space optical network communication terminal and method based on optical comb detection

A network communication and space optical technology, which is applied in the field of highly reliable space optical network communication terminals, can solve problems such as insufficient reliability of satellite-to-ground optical links, and achieve the goal of reducing resource pressure on the star, reducing volume, and highly reliable routing Effect

Active Publication Date: 2020-09-04
SPACE STAR TECH CO LTD
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Problems solved by technology

[0008] The problem to be solved by the invention is to solve the problem of inter-satellite precision ranging and broadband communication integration and the problem of insufficient reliability of the satellite-ground optical link

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  • A highly reliable space optical network communication terminal and method based on optical comb detection
  • A highly reliable space optical network communication terminal and method based on optical comb detection

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Embodiment Construction

[0033] Hereinafter, the present invention will be described in detail based on the drawings.

[0034] like figure 1 As shown, the present invention designs a highly reliable space optical network communication terminal based on optical comb detection, including: control unit 101, femtosecond optical comb module 102, signal modulation and demodulation module 103, transmitting optical path 105, servo drive 106, CCD camera 107, pointing and alignment system 108, telescope system 109, beam splitter A 110, receiving optical path 111, photoelectric detection module 112, signal light source 113, beacon light source 114, reflector 115, beam splitter B116, routing calculation module 117.

[0035]According to different application environments between satellites and satellites, the femtosecond optical comb module 102 can work in the inter-satellite ranging state or the satellite-ground channel detection state. The optical comb has good time stability and frequency stability, and can ac...

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Abstract

The invention relates to a high-reliability spatial optical network communication terminal and method based on optical comb detection, comprising: performing beam pointing alignment on a communicationterminal and an opposite terminal before inter-satellite communication or satellite-to-earth communication; separating signal light and a femtosecond optical comb signal according to signals transmitted by the opposite terminal, and converting the separated signal light into an electrical signal for demodulation; reflecting the separated femtosecond optical comb signal to the communication terminal; determining whether the communication terminal is in the satellite-to-earth optical channel detection state; if so, entering the satellite-to-earth optical channel detection state: converting theseparated femtosecond optical comb signal into an electrical signal for sampling, monitoring the channel attenuation and channel interface mutation, and modulating the signal on the femtosecond optical comb according to the monitoring result; and summarizing and counting the channel quality of each link; and otherwise, entering the inter-satellite ranging state: interfering with the separated femtosecond comb signal and the reference comb to obtain an inter-satellite ranging signal. The invention improves the reliability and flexibility of a spatial optical network.

Description

technical field [0001] The invention belongs to the technical field of space laser communication, and relates to a highly reliable space optical network communication terminal and method based on optical comb detection. Background technique [0002] Space optical communication has the advantages of large communication capacity, high data transmission rate, small transceiver system, and strong anti-electromagnetic interference capability, and has become an important technical means for future space broadband communication. Distributed observation based on small satellite constellation formation can realize earth observation with higher measurement accuracy than before. Time synchronization and broadband communication between small satellites are the technical basis for distributed observation. The satellite-ground communication is affected by atmospheric attenuation and turbulence, which has a great impact on high-reliability communication. [0003] A high-reliability space ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/118H04B10/079H04B10/564H04L1/00H04B7/185
CPCH04B7/18521H04B10/07953H04B10/118H04B10/564H04L1/0002
Inventor 殷杰董涛苏昱玮
Owner SPACE STAR TECH CO LTD
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