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An Adaptive Alignment Method for Low-orbit Mobile Satellite Communication Network

A mobile satellite communication, self-adaptive technology, applied in the field of satellite communication

Active Publication Date: 2021-07-06
烟台芯扬聚阵微电子有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The traditional star alignment algorithm is realized by mechanically scanning the antenna, controlling the antenna direction through a mechanical servo mechanism, and comparing the received signal strength in different directions to estimate the satellite direction; the existing mobile terminal star alignment system generally adopts open-loop tracking and closed-loop tracking phase A combination of methods to carry out the star, but can not be fully idealized compensation

Method used

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  • An Adaptive Alignment Method for Low-orbit Mobile Satellite Communication Network
  • An Adaptive Alignment Method for Low-orbit Mobile Satellite Communication Network
  • An Adaptive Alignment Method for Low-orbit Mobile Satellite Communication Network

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Embodiment Construction

[0050]The present invention will be described in detail below according to the accompanying drawings and preferred embodiments, and the purpose and effect of the present invention will become clearer. The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0051] A kind of self-adaptive satellite alignment method of low-orbit mobile satellite communication network, such as figure 1 As shown, the method includes the following steps:

[0052] S1: Initialize all tracking feature parameters of the local layer and the global layer of the adaptive coupling model;

[0053] Set the search range of the array antenna The initial value of is set to the entire airspace, and the initial value n of the number of sampling points is set; all tracking characteristic pa...

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Abstract

The invention discloses an adaptive satellite alignment method for a low-orbit mobile satellite communication network. The method first receives signals through an array antenna, and uses an angle estimation method based on MUSIC to estimate the offset angle between the array antenna and the satellite beam; and then based on the estimated Using the adaptive coupling model to track the satellite direction, and according to the characteristic parameters extracted during the tracking process, the antenna direction tracking alignment is realized; finally, according to the obtained characteristic parameters, adjust the angle estimation method based on MUSIC parameter, repeat the above steps to realize real-time estimation of offset angle and real-time tracking and alignment of antenna direction. The satellite alignment method effectively improves the speed and accuracy of dynamic offset angle estimation, thereby improving the speed and accuracy of antenna alignment.

Description

technical field [0001] The invention relates to the field of satellite communication, in particular to an adaptive satellite alignment method for a low-orbit mobile satellite communication network. Background technique [0002] Satellite communication is an important means of information transmission in contemporary society. However, with the development of the times, the demand for communication in contemporary society is increasing, and the scenarios at both ends of communication are becoming more and more complex. In recent years, my country has begun to lay out and build a global communication network based on low-orbit mobile satellites. The low-orbit broadband satellite network provides communication capabilities with large bandwidth, flexible configuration, anti-interference, low delay, and high reliability, which can promote communication development. At present All countries are actively participating in the wave of low-orbit satellite development, and low-orbit sate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/08H04B7/185
CPCH04B7/086H04B7/18519H04B7/195H04B7/1851
Inventor 宋春毅陈钦徐钰颖徐志伟
Owner 烟台芯扬聚阵微电子有限公司
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