Different-orbit inter-satellite communication link beam pointing error calculation method and module

A communication link and beam pointing technology, applied in the field of satellite communication, can solve problems such as equipment installation deviation and communication link power loss, and achieve the effect of ensuring accuracy

Active Publication Date: 2020-12-04
航天科工空间工程发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The pointing accuracy of the antenna beam is one of the key factors determining the performance of inter-satellite communication. For the spot beam emitted by the satellite, in order to obtain the best communication effect, the maximum gain point of the spot beam should be located on the line connecting the two satellites; but in fact, due to Satellites have various attitude disturbances, equipment installation deviations, etc. The point on the connection line between the two satellites is the non-maximum gain point of the beam, which causes power loss on the communication link

Method used

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  • Different-orbit inter-satellite communication link beam pointing error calculation method and module
  • Different-orbit inter-satellite communication link beam pointing error calculation method and module
  • Different-orbit inter-satellite communication link beam pointing error calculation method and module

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Embodiment 1

[0038] Such as figure 1 As shown, a method for analyzing the beam pointing error of an off-track inter-satellite communication link is characterized in that the two satellites are satellites in adjacent orbits, and the method includes:

[0039] S10. Determine the error source parameters of the antenna beam pointing, including: the pointing angle accuracy of the antenna itself in the pitch direction a 1 , the angle accuracy of the antenna itself in the yaw direction is a 2 , the angle deviation of the antenna installation reference in the pitch direction b 1 , the antenna installation reference angle deviation b in the yaw direction 2 , satellite pitch direction attitude pointing accuracy c 1 , satellite yaw direction attitude pointing accuracy c 2 , satellite pitch attitude stabilization accuracy ω s1 , satellite yaw attitude stabilization accuracy ω s2 , is the satellite orbit data update cycle t 0 , the maximum value of the relative pitch angular velocity ω of the two...

Embodiment 2

[0089] A beam pointing error calculation module of an off-track inter-satellite communication link, characterized in that it includes:

[0090] An error source parameter determination unit, configured to determine an error source parameter of antenna beam pointing;

[0091] The antenna beam pointing deviation angle calculation unit is used to calculate the antenna beam pointing deviation angle.

[0092] Those skilled in the art can understand that the device in this embodiment can also implement other method steps described in Embodiment 1, which will not be repeated here.

[0093] The present invention proposes a method for calculating the beam pointing error of the off-track inter-satellite link, and obtains the calculation formula of the antenna beam pointing angle deviation, which can provide a theoretical basis for the design of satellite key engineering parameters and effectively ensure the accuracy of the off-orbit inter-satellite link design sex.

Embodiment 3

[0095] A computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the method described in Embodiment 1 is implemented.

[0096]In practical applications, the computer-readable storage medium may use any combination of one or more computer-readable media. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or device, or any combination thereof. More specific examples (non-exhaustive list) of computer readable storage media include: electrical connections with one or more leads, portable computer disks, hard disks, random access memory (RAM), read only memory (ROM), Erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM),...

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Abstract

The embodiment of the invention discloses a different-orbit inter-satellite communication link beam pointing error calculation method and module, a storage medium and computer equipment, and the method comprises the steps of: S10, determining error source parameters of antenna beam pointing, including antenna self-pointing angle precision a1 and a2, antenna installation reference angle deviation b1 and b2, satellite attitude pointing precision c1 and c2, the satellite attitude stabilization precision omega s1 and omega s2, the satellite orbit data updating period t0, the maximum value omega 1of the relative pitch angle speed of two satellites, the maximum value omega 2 of the relative yaw angle speed of the two satellites, and the total orbit information transmission and processing time delay delta t; S30, calculating the component of the antenna beam pointing deviation angle in the pitching direction according to the formula theta 1=a1+b1+c1+omega s1.t0+omega 1.delta t; S50, calculating a component theta 2 of the antenna beam pointing deviation angle in the yaw direction according to a formula theta 2=a2+b2+c2+omega s2.t0+omega 2.delta t; and S70, substituting the theta 1 and thetheta 2 into a formula theta=(theta 12+theta 22)1/2, and calculating the antenna beam pointing deviation angle theta.

Description

technical field [0001] The present invention relates to the field of satellite communication, and more specifically, relates to a calculation method, module, storage medium and computer equipment for beam pointing errors of off-track inter-satellite communication links. Background technique [0002] In the low-orbit satellite communication system, each satellite in the constellation can realize data communication and information interaction between satellites through the inter-satellite communication link (referred to as the inter-satellite link), and realize communication without relying on the ground gateway station The business is transmitted across regions. At present, many companies represented by SpaceX have proposed a low-orbit broadband satellite communication system based on the inter-satellite link network, and the satellite communication system using the inter-satellite link has become one of the main development trends. [0003] The inter-satellite communication...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/185
CPCH04B7/18521
Inventor 杨彪窦宏浩赵岩章雷向开恒李明明
Owner 航天科工空间工程发展有限公司
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