A spaceborne x-band high-speed data transmission system
A high-speed, frequency-band technology, applied in the field of system design for the transmission of satellite in-orbit data to ground stations, can solve problems such as uncollected data, no explanation or report found, and achieve the effect of improving timeliness and reliability
Active Publication Date: 2021-07-20
SHANGHAI SATELLITE ENG INST
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[0004]
At present, there is no description or report of the similar technology of the present invention, and no similar data at home and abroad have been collected yet.
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[0019] The specific design scheme of the present invention is illustrated below in conjunction with accompanying drawing.
[0020] figure 1 For the specific scheme designed by the present invention, in order to describe the transmission scheme in detail, frequency division multiplexing is defined as a process in which baseband data signals are modulated on different frequency points of the same frequency band to realize multi-channel baseband data signal transmission. The multiplexing of two similar frequency points is selected within the limited bandwidth of the frequency band; polarization multiplexing is the process of realizing multi-channel radio frequency signal transmission by utilizing the characteristics of antenna radiation with different polarization electromagnetic waves. use.
[0021] Such as figure 1 As shown, the embodiment of the present invention provides a spaceborne X-band high-speed data transmission system, which is used for high-speed data transmission ...
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The invention discloses a space-borne X-band high-speed data transmission system, comprising a data format processor module, a high-speed modulation transmitter module, a solid-state power amplifier module, a duplexer module, a microwave switch matrix module and two-dimensional rotational polarization multiplexing Antenna module. The present invention adopts the design of frequency division multiplexing and antenna polarization multiplexing, and the amount of transmitted data per unit time is multiplied or quadrupled. The invention solves the problem that the real-time transmission data rate is low and the load data cannot be quickly transmitted to the ground when the satellite data transmission system transmits data to the ground station. The data transmission system implemented by this design scheme can reduce the data transmission time between the satellite and the ground, and complete the task of transmitting the satellite payload data to the ground in a timely manner within the limited visible time of the satellite-ground link.
Description
technical field [0001] The invention relates to the system design of satellite on-orbit data transmission to the ground station, in particular to a high-speed data transmission system in the X-band on the satellite. Background technique [0002] The data obtained by the satellite in orbit needs to be transmitted to the ground receiving station in time. Due to the limitation of the visible arc section of the satellite from the ground station, the transmission time of the satellite to the ground station is limited, and the satellite data needs to establish a transmission link to the ground receiving station many times, and the timeliness of the satellite data is reduced. To complete the transmission of a large amount of data within a limited transmission time, the traditional data transmission system cannot meet the demand for large-scale transmission of satellite payload data. It is necessary for the satellite to design a high-speed data transmission system to meet the timeli...
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IPC IPC(8): H04B7/185
CPCH04B7/18502
Inventor 康永鹏刘方白勇崔雷许建峰
Owner SHANGHAI SATELLITE ENG INST