Low-orbit mobile communication satellite system based on frequency-hopping time-hopping positioning and timing function

A communication satellite and functional technology, applied in the field of low-orbit mobile communication satellite system, can solve the problem of weak signal anti-interference ability

Active Publication Date: 2019-12-10
XIAN INSTITUE OF SPACE RADIO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It solves the problem of weak signal anti-interference ability, and can provide safe positioning and timing services in the case of interference

Method used

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  • Low-orbit mobile communication satellite system based on frequency-hopping time-hopping positioning and timing function
  • Low-orbit mobile communication satellite system based on frequency-hopping time-hopping positioning and timing function
  • Low-orbit mobile communication satellite system based on frequency-hopping time-hopping positioning and timing function

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specific Embodiment approach

[0092] A specific embodiment of the low-orbit mobile communication satellite system based on the frequency hopping and time hopping positioning and timing function of the present invention is as follows:

[0093] Including low-orbit mobile communication satellites and ground terminals; low-orbit mobile communication satellites are equipped with multi-beam antennas, and low-orbit mobile communication satellites can send low-orbit mobile communication satellites based on frequency hopping and time hopping positioning and timing function to ground terminals through multi-beam antennas. Signal.

[0094] The time domain structure of the communication satellite signal is that the signal adopts a time division multiplexing system in the time domain, and the communication service is performed by basic frames and time slots. The frequency domain structure of the communication satellite signal is that the signal adopts a frequency division multiplexing system in the frequency domain. T...

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Abstract

The invention discloses a low-orbit mobile communication satellite system based on a frequency-hopping time-hopping positioning and timing function. The low-orbit mobile communication satellite systemcomprises a low-orbit mobile communication satellite and a ground terminal; and the low-orbit mobile communication satellite is provided with a multi-beam antenna. The low-orbit mobile communicationsatellite can send a low-orbit mobile communication satellite signal based on a frequency hopping time hopping positioning time service function to the ground terminal through the multi-beam antenna.The low-orbit mobile communication satellite signal based on the frequency hopping and time hopping positioning and time service function of the system has high instantaneous landing power, has stronganti-interference capability by combining frequency hopping and time hopping characteristics, and can provide safe positioning and time service. The ground terminal only needs to receive signals broadcasted by at least one low-orbit mobile communication satellite, and the positioning and time service functions of the terminal can be achieved.

Description

technical field [0001] The invention relates to a low-orbit mobile communication satellite system based on the function of frequency-hopping and time-hopping positioning and timing, and belongs to the technical field of frequency-hopping and timing-hopping positioning and timing for low-orbit mobile communication. Background technique [0002] Global Navigation Satellite System (GNSS) is playing an increasingly important role in various fields such as national economy, transportation, entertainment, national defense and security with its ability to provide positioning, navigation and timing services in all weather and all day long. Become an indispensable space infrastructure. However, the landing power of GNSS signals is limited, and it is easy to be blocked and has weak anti-interference ability, which has attracted attention. [0003] With the development of the current low-orbit Iridium constellation, especially the development of low-orbit mobile communication satellit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/715H04B7/0408H04B7/185
CPCH04B1/715H04B7/18532H04B7/18534H04B7/0408H04B2001/6908
Inventor 蒙艳松严涛王瑛周昀雷文英王国永边朗
Owner XIAN INSTITUE OF SPACE RADIO TECH
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