Satellite downlink signal processing method and system

A signal processing and satellite technology, applied in the field of satellite signal processing, can solve the problems of signal offset and the difficulty of receiving communication channels in fixed frequency bands, and achieve the effect of improving the signal reception rate

Active Publication Date: 2022-02-08
诺比侃人工智能科技(成都)股份有限公司
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Problems solved by technology

[0004] The purpose of the present invention is to provide a satellite downlink signal processing method and system to solve the technical problem in the p

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  • Satellite downlink signal processing method and system
  • Satellite downlink signal processing method and system
  • Satellite downlink signal processing method and system

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Embodiment Construction

[0040] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0041] like figure 1 As shown, in the satellite mobile communication system, due to the instability of the local clock frequency of the terminal and the relative movement between the terminal and the satellite, the frequency band of the satellite downlink signal will be shifted. At this time, if the communication channel maintains the original receiving frequency band , it is difficult to receive the satellite downlink signal with fre...

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Abstract

The invention discloses a satellite downlink signal processing method and system. The method comprises the following steps: S1, triggering and monitoring satellite downlink signals received by a communication channel so as to identify downlink offset signals in the satellite downlink signals; and S2, carrying out channel dynamic correction on the communication channel based on the downlink offset signal so as to ensure that the communication channel fully receives the satellite downlink signal. According to the invention, the correction time sequence function of the communication channel is constructed by using convolution fitting, so that the communication channel is corrected according to the correction time sequence function at the receiving frequency band of the satellite downlink signal at the time sequence of the downlink offset signal, the communication channel maintains the receiving frequency band of the front time sequence of the downlink offset signal in the receiving frequency band of the satellite downlink signal included between the adjacent time sequences of the downlink offset signal, so that the communication channel can fully receive the satellite downlink signal, and the signal receiving rate of the satellite downlink signal is improved.

Description

technical field [0001] The invention relates to the technical field of satellite signal processing, in particular to a satellite downlink signal processing method and system. Background technique [0002] With the development of the information and communication industry, my country's terrestrial mobile communication system has been relatively developed. However, due to my country's vast territory, diverse geographical environment and uneven population distribution, the terrestrial mobile communication system only covers 30% of my country's land area, and the remaining 70% of the country's land area lacks basic communication guarantees. The satellite mobile communication system can make up for the insufficiency of the ground mobile communication system. It can effectively expand the coverage of the satellite mobile communication system through satellites, achieve full coverage, and even connect user terminals to public or private communication networks on a global scale. Th...

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Application Information

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IPC IPC(8): H04L27/00H04B7/185
CPCH04L27/0014H04B7/18519H04L2027/0026Y02D30/70
Inventor 林仁辉苏茂才唐泰可廖峪
Owner 诺比侃人工智能科技(成都)股份有限公司
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