Satellite communication Doppler shift compensation method and device and satellite communication system

A technology of Doppler frequency shift and satellite communication, which is applied in the field of satellite communication system and satellite communication Doppler frequency shift compensation. It can solve the problems of poor real-time performance, complex system, and low compensation accuracy, and meet the requirements of dynamic continuous tracking. , saving system resources, and high precision frequency offset compensation

Active Publication Date: 2018-02-09
南京天际易达通信技术有限公司
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  • Application Information

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Problems solved by technology

[0004] The technical problem mainly solved by the present invention is to provide a satellite communication Doppler frequency shift compensation method, a compensation device and a satellite communication system, to solve the complex Doppler frequency shift compensation working system, low compensation accuracy and real-time compensation in the prior art of satellite communication. Issues such as weak sex

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  • Satellite communication Doppler shift compensation method and device and satellite communication system
  • Satellite communication Doppler shift compensation method and device and satellite communication system
  • Satellite communication Doppler shift compensation method and device and satellite communication system

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[0020] In order to facilitate the understanding of the present invention, the present invention will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0021] It should be noted that, unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the technical field of the present invention. Terms used in the description of the present invention are only for the purpose of describing specific embodiments, and are not used to limit the present invention. The term "...

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Abstract

The invention discloses a satellite communication Doppler shift compensation method. The method comprises: after a ground satellite communication device simultaneously receives a time service signal sent by a navigation satellite and a pilot signal sent by a communication satellite, generating and outputting a time service pulse per second and a pilot pulse per second correspondingly and comparingthe time deviation of the two pulses per second; calculating the relative movement speed between the communication satellites and the ground satellite communication device by the time deviation so asto further obtain an uplink signal frequency deviation and a downlink signal frequency deviation, and compensating the frequencies of a uplink signal and a downlink signal accordingly. The method canaccurately calculate and continuously track the frequency deviation, eliminates additional frequency calibration by a satellite communication system, contributes to saving the system resources of thecommunication satellite, has high frequency deviation compensation precision, and can achieve dynamic continuous tracking. In addition, the invention also discloses a satellite communication Dopplershift compensation device and a satellite communication system.

Description

technical field [0001] The invention relates to the field of satellite communication, in particular to a satellite communication Doppler frequency shift compensation method, a compensation device and a satellite communication system. Background technique [0002] With the rapid development of mobile satellite communication, the carrier frequency in satellite communication will undergo Doppler frequency shift effect as the speed of the satellite relative to the ground changes, especially in highly dynamic environments (such as aviation communication, low-orbit satellite communication, etc.) Under the circumstances, due to the Doppler effect, the frequency of the uplink signal transmitted by the ground satellite communication equipment to the communication satellite will have a deviation when it reaches the communication satellite, and the frequency of the downlink signal transmitted by the communication satellite to the ground satellite communication equipment will not reach t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/01H04B7/185
CPCH04B7/01H04B7/185Y02D30/70
Inventor 李志强梁凝睿
Owner 南京天际易达通信技术有限公司
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