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Satellite mobile voice communication system with extra-low speed

A voice communication and satellite navigation system technology, applied in transmission systems, radio transmission systems, electrical components, etc., can solve problems such as lack of communication functions, and achieve the effects of easy expansion, low use cost, and economical and reasonable use

Inactive Publication Date: 2012-11-07
NAT ASTRONOMICAL OBSERVATORIES CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can provide high-precision global navigation positioning, speed measurement and timing services, but has no communication function

Method used

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  • Satellite mobile voice communication system with extra-low speed
  • Satellite mobile voice communication system with extra-low speed
  • Satellite mobile voice communication system with extra-low speed

Examples

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Embodiment Construction

[0042] A very low rate satellite mobile voice communication system of the present invention consists of a space segment, a ground segment and a user segment, and is a satellite mobile voice communication system designed on the basis of an extremely low voice compression coding rate technology. Optimization design, optimization design of transmission link, optimization design of micro terminal and ground network control technology, determine the communication system, signal characteristics and system composition of satellite communication.

[0043] The space segment of the system of the present invention is a transponder on the existing general GEO communication satellite in the transponding satellite navigation system, and is used for transponding the system carrier modulation signal. GEO communication satellites include communication satellites in geosynchronous orbit and communication satellites in low-inclination geosynchronous orbit.

[0044] The ground section of the syst...

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Abstract

The invention discloses a satellite mobile voice communication system with an extra-low speed, and relates to the satellite technology. The satellite mobile voice communication system with the extra-low speed based on a forwarding type satellite navigation system can be built by taking advantages of GEO (geostationary orbit) communication satellite resources (or other satellite resources) in the current forwarding type satellite navigation system, adopting a speech compression coding with the extra-low speed and a ground mobile voice communication network technology, and determining a communication system, signal characteristic and a system composition of the satellite mobile voice communication through an optimized design of satellite channel, a microminiature satellite terminal and an optimized design of ground network control technology. The system provided by the invention has the advantages of system resource sharing, flexible and effective network and combined navigation and communication capability, and can provide a low-cost voice communication application service and can be applied to an air-ground emergency communication system and a measurement system with small data volume demand.

Description

technical field [0001] The invention relates to the field of satellite technology, and is a very low-speed satellite mobile voice communication system based on a forwarding satellite navigation system. Background technique [0002] Existing satellite navigation systems include my country's Beidou generation, American GPS and Russia's GLONASS navigation system. Except for the Beidou navigation system, which has short message communication functions, other systems do not provide communication functions. It is necessary to combine satellite resources such as satellite communication networks (such as maritime satellite communication systems, iridium communication systems) or ground communication network resources to realize communication functions. [0003] The main technical characteristics of each system are: [0004] 1) Beidou first-generation navigation system [0005] The Beidou first-generation satellite navigation system is a satellite positioning system independently d...

Claims

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Application Information

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IPC IPC(8): H04B7/185
Inventor 施浒立裴军崔君霞张杰张丽荣胡正群杜晓辉艾国祥
Owner NAT ASTRONOMICAL OBSERVATORIES CHINESE ACAD OF SCI
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