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Satellite-borne four-channel Ka-band data transmission channel system

A four-channel, frequency-band technology, applied in the field of satellite data transmission and communication, can solve the problems of low-orbit satellites, such as the short visible time of the satellite and the ground, and the inability to meet the data transmission requirements of satellite loads, and achieve the effect of strong flexibility

Pending Publication Date: 2021-11-09
SHANGHAI SPACEFLIGHT INST OF TT&C & TELECOMM
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Problems solved by technology

[0003] Due to the short visible time of low-orbit satellites, the original L and X-band data transmission systems support data transmission of less than 1Gbps at most, which is far from meeting the current satellite payload data transmission requirements

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  • Satellite-borne four-channel Ka-band data transmission channel system
  • Satellite-borne four-channel Ka-band data transmission channel system
  • Satellite-borne four-channel Ka-band data transmission channel system

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Embodiment Construction

[0026] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings. It should be noted here that the descriptions of these embodiments are used to help understand the present invention, but are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not constitute a conflict with each other.

[0027] Such as figure 1 As shown, a spaceborne four-channel Ka-band digital transmission channel system includes:

[0028] The modulation module performs digital modulation on the input high-speed AOS data, amplifies and filters the intermediate frequency modulation signal and then up-converts it to the Ka frequency band before outputting;

[0029] The traveling wave tube component module amplifies the input Ka-band modulation signal and outputs it;

[0030] The duple...

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Abstract

The invention discloses a satellite-borne four-channel Ka-frequency-band data transmission channel system which comprises a modulation module, a traveling wave tube assembly module, a duplexer module and a waveguide switch module, wherein the modulation module digitally modulates input high-speed AOS data, amplifies and filters an intermediate frequency modulation signal, upconverts the intermediate frequency modulation signal to a Ka frequency band, and outputs the intermediate frequency modulation signal; the traveling wave tube assembly module amplifies the input Ka frequency band modulation signal and then outputs the signal; the duplexer module receives the Ka radio frequency signal output by the traveling wave tube assembly module for filtering and combining; and the waveguide switch module receives the combined signal output by the duplexer module for channel selection, and transmits the signal to a main channel or a backup channel for transmission according to an instruction. According to the invention, high-speed data transmission is realized by using the large broadband characteristic of the Ka frequency band, and timely downloading of mass load data within limited visible time of the satellite and the ground of a satellite is realized.

Description

technical field [0001] The invention relates to the technical field of satellite data transmission communication, in particular to a satellite-borne four-channel Ka-band data transmission channel system. Background technique [0002] The satellite data transmission channel system realizes data transmission functions such as satellite load data and platform monitoring data to the ground and to the relay. The digital transmission channel system is used to complete the functions of data transmission baseband data reception, coding, modulation, amplification, filtering, channel selection, etc., and is an important part of the satellite data transmission subsystem. [0003] Due to the short visible time of low-orbit satellites, the original L and X-band data transmission systems support data transmission of less than 1Gbps at most, which is far from meeting the current satellite load data transmission needs. Therefore, it is necessary to design a data transmission channel system...

Claims

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Application Information

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IPC IPC(8): H04B7/185H04L27/20
CPCH04B7/1851H04L27/20
Inventor 郝广凯李世建杨津浦华伊陆格格杨宇涛钟鸣
Owner SHANGHAI SPACEFLIGHT INST OF TT&C & TELECOMM
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