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Satellite laser communication terminal

A laser communication and satellite technology, which is applied in the field of satellite communication, can solve the problems of long capture time and missing scans, and achieve the effect of simplifying the capture process, shortening the capture time, and increasing the probability of successful capture

Inactive Publication Date: 2011-08-24
PEKING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This scheme is currently the most widely used method in the world. The disadvantage is that the capture time is longer (such as 3 minutes). In addition, due to the vibration of the satellite platform, the relative motion between satellites and the mechanical noise of the communication terminal itself, etc. Influenced by the sub-area scan, there is a probability of missed scan

Method used

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  • Satellite laser communication terminal
  • Satellite laser communication terminal
  • Satellite laser communication terminal

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Embodiment Construction

[0030] The whole end machine is composed of objective lens, eyepiece, universal joint, motor drive and angular displacement sensor, channel switching component, star capture channel and its original components, satellite laser communication channel and module, the interface between each module component and the central processing unit, the central processing unit , and the interface between the central processing unit and the satellite platform. In the figure, the universal joint, motor drive and angular displacement sensor are used to adjust the orientation of the communication terminal. The angular displacement sensor measures the rotation angle of the universal joint and provides measurement data for the motor-driven universal joint. figure 2 The channel switching components, star capture elements and satellite laser communication modules in the system are all installed on a flat plate called an optical backplane for position positioning and support. Each module and compon...

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Abstract

The terminal device includes object lens, universal joints, motor drive and angular displacement sensor, part for switching channels, star capture channel and part, satellite laser communication channel and module, interfaces between each module and CPU, CPU, and interface between CPU and satellite platform. CPU controls switching part in adjustment channel so that light signal received by systemcan be transferred to star capture channel to capture stars, or to satellite laser communication channel, where relevant modules are cooperated to carry out satellite laser communication. Syncretizing function of star sensor, the system can accomplish capture procedure between communication terminal devices without need of scanning.

Description

technical field [0001] The invention belongs to the technical field of satellite communication, and in particular relates to a satellite laser communication terminal. Background technique [0002] Compared with traditional RF communication technology, satellite laser communication has the advantages of high data rate, good confidentiality, small size, light weight, and low power consumption. Many countries in the world have carried out a lot of research work. At present, the SILEX system developed by the European Space Agency has been successfully tested in space. The system includes two flight-level space optical communication terminals, among which the high-orbit (GEO) space optical communication terminal is carried on the ARTEMIS synchronous satellite of the European Space Agency. , a low-orbit (LEO) space optical communication terminal carried on the French Earth observation satellite Spot 4. The system successfully established the optical communication link on November...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/118
Inventor 王建民吴龙徐泉
Owner PEKING UNIV
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