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Multi-satellite joint calibration beam pointing deviation angle dynamic measurement method and device

A technology of beam pointing deviation and dynamic measurement, applied in the field of satellite mobile communication

Pending Publication Date: 2022-07-01
中国人民解放军61096部队
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  • Description
  • Claims
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Problems solved by technology

At the same time, since the follow-up satellites cover the sea, a mobile calibration station can only be built based on the ship-borne platform. As a result, during the calibration measurement, the theoretical pointing point and the calibration measurement point will change at the same time, and the calibration measurement method of the original first satellite cannot be used to complete the satellite. Beam Pointing Bias Calculation

Method used

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  • Multi-satellite joint calibration beam pointing deviation angle dynamic measurement method and device
  • Multi-satellite joint calibration beam pointing deviation angle dynamic measurement method and device
  • Multi-satellite joint calibration beam pointing deviation angle dynamic measurement method and device

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Embodiment Construction

[0044] In order to make the objectives, technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0045] figure 1 This is a schematic flowchart of a method for dynamic measurement of beam pointing deviation angle for multi-satellite joint calibration according to an embodiment of the present invention. like figure 1 As shown, the method includes:

[0046] S11: Discretize and measure the energy value of the satellite calibration beam;

[0047] In practical applications, the energy value of the satellite calibration beam can be measured every 10 seconds.

[0048] S12: Calculate a first included angle according to the energy value of the satellite calibration beam, where the first included angle is the included angle between the calibration station and the satellite connection line and the actual pointing of the satellite beam;

[0049] ...

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Abstract

The invention discloses a beam pointing deviation angle dynamic measurement method and device for multi-satellite joint calibration. The method comprises the following steps: discretizing and measuring an energy value of a satellite calibration beam; calculating a first included angle according to the energy value of the satellite calibration beam, wherein the first included angle is an included angle between a connection line of a calibration station and a satellite and an actual direction of the satellite beam; recording coordinates of the calibration station in real time, and converting the coordinates of the calibration station into coordinates of a satellite antenna coordinate system; under a satellite antenna coordinate system, calculating actual pointing point coordinates of a satellite beam according to the calibration station coordinates and the first included angle; and calculating an included angle between the actual satellite beam pointing point and the theoretical satellite beam pointing point according to the actual satellite beam pointing point coordinates and the theoretical satellite beam pointing point coordinates. Therefore, the method can achieve the calculation of the beam pointing deviation angle under the condition that the theoretical pointing of the calibration station and the satellite beam changes in real time.

Description

technical field [0001] The invention relates to the field of satellite mobile communications, in particular to a method, device, electronic device and computer-readable storage medium for dynamic measurement of beam pointing deviation angle for multi-satellite joint calibration. Background technique [0002] In order to meet the needs of emergency communication, my country has launched my country's first domestic large S-band mobile communication satellite after 2016. The satellite uses a large-diameter deployable multi-beam ring mesh antenna to cover the mission area, and the system design expands the communication coverage area through multi-satellite splicing. Due to the satellite running in a synchronous orbit with a small inclination angle and other factors, the geometric relationship between the antenna and the ground coverage area exhibits periodic and constant changes. The actual pointing error of the antenna will cause the edge gain to change and affect the ground c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C1/00
CPCG01C1/00
Inventor 尹曙明费立刚郝利云郭浩然张新军叶思雨赵海滨李强赵玮童
Owner 中国人民解放军61096部队
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