Study on remote sensing satellites random access to internet constellation and on-orbit intelligent processing

Xiaoyu CHANG; Weijia ZHANG; Xudong1 LI; Xiaonan ZHANG; Gang WANG; Gang JIA

doi:10.11959/j.issn.1000-0801.2022075

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Study on remote sensing satellites random access to internet constellation and on-orbit intelligent processing

Topic: Satellite Network | 更新时间：2024-06-05

- Study on remote sensing satellites random access to internet constellation and on-orbit intelligent processing
- Telecommunications Science Vol. 38, Issue 4, Pages: 59-69(2022)
- 作者机构：
  
  1. 中国电子科技集团公司第五十四研究所，河北石家庄 050081
  2. 中国电子科技集团公司航天信息应用技术重点实验室，河北石家庄 050081
- 作者简介：
- 基金信息：
- DOI：10.11959/j.issn.1000-0801.2022075
  CLC： TP393
- Published Online：2022-04，
  
  Published：20 April 2022
- 稿件说明：
移动端阅览
Xiaoyu CHANG, Weijia ZHANG, Xudong1 LI, et al. Study on remote sensing satellites random access to internet constellation and on-orbit intelligent processing[J]. Telecommunications science, 2022, 38(4): 59-69.
DOI：

Xiaoyu CHANG, Weijia ZHANG, Xudong1 LI, et al. Study on remote sensing satellites random access to internet constellation and on-orbit intelligent processing[J]. Telecommunications science, 2022, 38(4): 59-69. DOI： 10.11959/j.issn.1000-0801.2022075.

摘要

低轨互联网星座是当前全球研究和发展的热点，互联网星座支持随遇接入遥感卫星和信息在轨直接处理的应用前景备受期待，但由于轨道高度不同会产生双向高动态异构星座的接入互联问题。首先，通过设定低轨卫星互联网星座在不同轨道特性、不同卫星数量情况下的随遇接入仿真场景，重点探讨了时空非连续可视性和多普勒频移问题对遥感卫星接入性能的影响；其次，基于遥感卫星随遇接入互联网星座场景的特点，分析了不同时延性在轨处理任务的流程及其星地功能分配；最后，对当前在轨智能处理算法存在的问题和未来研究重点进行阐述，为未来低轨互联网星座及遥感卫星的发展和联合组网应用提供可靠的理论支撑。

Abstract

The low earth orbit (LEO) satellite Internet constellation is a hot spot in current global research.And it is highly anticipated that the LEO satellite Internet constellation supports random access to remote sensing satellites and direct on-orbit information processing.However

due to the different orbital heights

the difficult access problems of the bidirectional highly dynamic heterogeneous constellation will be caused.Firstly

the random access scenario under different orbit characteristics and satellite numbers of LEO satellite Internet constellation was set up

and the impact of the spatiotemporal discontinuous visibility and Doppler frequency shift on the remote sensing satellite access performance was focused on.Secondly

based on the characteristics of the random access scenario

the process of on-orbit processing tasks with different delays and the allocation of satellite-ground functions were analyzed.Finally

the problems existing in the current on-orbit intelligent processing algorithm and the focus of future research were expounded

so as to provide reliable theoretical support for the development and applications of LEO satellite Internet constellation and remote sensing satellites in the future.

关键词

Keywords

references

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