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High-gain satellite-to-ground communication coverage system and method

A high-gain, satellite-based technology, applied in the field of satellite-to-ground communications, can solve the problems of easy interruption of communication links, low antenna gain, slow data transmission, etc., and achieve the effect of high antenna gain, guaranteed non-interruption, and reduced operations

Active Publication Date: 2019-03-12
SHANGHAI ENG CENT FOR MICROSATELLITES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is used to solve the problems of low antenna gain, large interference effect, slow data transmission and easy interruption of communication links when satellites rotate frequently in the prior art

Method used

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  • High-gain satellite-to-ground communication coverage system and method
  • High-gain satellite-to-ground communication coverage system and method
  • High-gain satellite-to-ground communication coverage system and method

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Effect test

Embodiment 1

[0045] see figure 2 , the present invention provides a high-gain satellite-to-ground communication coverage system, the high-gain satellite-to-ground communication coverage system includes: a satellite body 1, two antennas 2 are arranged on the satellite body 1, and the two antennas 2 Distributed symmetrically about the center of the satellite body 1, and the normal directions of the beams emitted by the two antennas 2 are collinear with the connection of the two antennas 2; the ground station 3, the ground station 3 is suitable for receiving The communication signal sent by the two antennas 2; the electronic switch 5, the electronic switch 5 includes a first switch input terminal, a second switch input terminal 51, a first switch output terminal 52 and a second switch output terminal 53; The first switch output end 52 of the electronic switch 5 is connected to any one of the antennas 2 in the two antennas 2, and the second switch output end 53 of the electronic switch 5 is c...

Embodiment 2

[0071]see Figure 6 , the present invention also provides a high-gain satellite-to-ground communication coverage method, the high-gain satellite-to-ground communication coverage method is based on the high-gain satellite-to-ground communication coverage system described in Embodiment 1, and the high-gain satellite-to-ground communication coverage system The communication coverage method includes the following steps:

[0072] 1) A satellite body is provided, the satellite body is provided with two antennas, the two antennas are distributed symmetrically about the center of the satellite body, and the normal directions of the beams emitted by the two antennas are all in line with the two antennas. The connection lines of the two antennas are collinear;

[0073] 2) Use the communication switching control method to place the antenna whose angle between the normal direction of the antenna beam and the ground station is less than 90° in the working state, and reserve a switching ti...

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Abstract

The invention provides a high-gain satellite-ground communication coverage system and method. The system comprises a satellite body equipped with two antennas; a ground station; an electronic change-over switch including a first switch input end, a second switch input end, a first switch output end, and a second switch output end, wherein the first switch output end of the electronic change-over switch is connected with either of the two antennas and the second switch output end is connected with the other of the two antennas; a satellite computer, a switch control module including an input end, a first control output end, and a second control output end, wherein the input end of the switch control module is connected with the satellite computer and the first control output end of the switch control module is connected with the first switch input end of the electronic change-over switch. The system and method are suitable for satellites with frequently changed attitudes, reduce the operations of a ground measurement and control station by in-satellite autonomous control, and achieve purposes of high antenna gain, fast data transmission, low power consumption, and uninterrupted communication.

Description

technical field [0001] The invention relates to the field of satellite-to-ground communication, in particular to a high-gain satellite-to-ground communication coverage system and method. Background technique [0002] The satellite-to-ground communication subsystem cooperates with the ground measurement and control / data transmission system to complete functions such as the downlink transmission of telemetry data and payload data. Satellite energy is limited, and the transmission power of the spaceborne transmitter is relatively small. In order to be able to achieve uninterrupted high-speed ground-to-ground communication in different types of orbits and satellite attitude rollovers at large angles, the communication antenna must have a high gain. There are generally two design methods for traditional satellites: [0003] One is to use two pairs of antennas (one for the sky and one for the ground) to combine to construct a near-omnidirectional beam. The antenna gain of this ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/185
CPCH04B7/18597Y02D30/70
Inventor 曹金黄江江金凤黄佳陈夏
Owner SHANGHAI ENG CENT FOR MICROSATELLITES