面向高轨卫星的探测集群接入机制设计

仝欣; 李旭; 刘颖

doi:10.12382/bgxb.2022.0354

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面向高轨卫星的探测集群接入机制设计

更新时间：2025-08-18

- 面向高轨卫星的探测集群接入机制设计
- Design of Access Scheme for Detection Swarm for Satellites in HEO
- 兵工学报 2023年44卷第8期页码：2354-2367
- 作者机构：
  
  北京交通大学电子信息工程学院, 北京 100044
- 作者简介：
  
  *邮箱: xli@bjtu.edu.cn
- 基金信息：
  
  中央高校基本科研业务费专项基金项目(2021JBZ102)
- DOI：10.12382/bgxb.2022.0354
  中图分类号：
- 收稿：2022-05-08，
  
  网络出版：2023-09-06，
  
  纸质出版：2023-08-30
- 稿件说明：
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仝欣, 李旭, 刘颖. 面向高轨卫星的探测集群接入机制设计[J]. 兵工学报, 2023,44(8):2354-2367.

Xin TONG, Xu LI, Yin LIU. Design of Access Scheme for Detection Swarm for Satellites in HEO[J]. Acta Armamentarii, 2023, 44(8): 2354-2367.
仝欣, 李旭, 刘颖. 面向高轨卫星的探测集群接入机制设计[J]. 兵工学报, 2023,44(8):2354-2367. DOI： 10.12382/bgxb.2022.0354.

Xin TONG, Xu LI, Yin LIU. Design of Access Scheme for Detection Swarm for Satellites in HEO[J]. Acta Armamentarii, 2023, 44(8): 2354-2367. DOI： 10.12382/bgxb.2022.0354.

摘要

利用高轨卫星高效回传集群探测数据以获取决策优势

是现代战争中不可或缺的一环。为实现探测数据近实时传输

集群卫星接入响应时间需要进一步缩短。面向集群规模扩展、高轨卫星通信链路较长且时断时续场景

针对现有接入机制在单次接入时延较大情况下仍需反复冲击重传问题

提出一种基于编队维护信息的探测集群编队非正交接入(FMI-NOMA)机制。该机制利用集群节点间可交互特性

采用选举算法汇聚信息以降低同时接入节点数量;结合功率域非正交技术

在避免大量节点反复尝试接入卫星的同时

提升节点接入成功概率

实现集群高轨卫星接入性能提升。综合考虑集群节点数量、编队链路与星地链路中断率等因素

建立接入时延与资源效率性能分析模型及资源效率最优化模型

分析优化单次接入节点数量与维护次数等机制参数。仿真结果表明

FMI-NOMA机制相较于竞争解决的多样性时隙ALOHA(CRDSA)机制及改进的CRDSA3机制

资源效率提升了约45%、接入时延降低了约12%

在编队规模扩展、星地链路时断时续的高轨卫星接入场景下更具优势。

Abstract

Using satellites in high earth orbit (HEO) to return swarm detection data to gain decision-making advantages is indispensable in modern warfare. The access delay needs to be shortened to realize the real-time transmission of detection data. To deal with the scenario of large swarm size and long and intermittent communication links of satellites in HEO

we propose a formation maintenance information based non-orthogonal multiple access (FMI-NOMA) mechanism to solve the problem that the existing mechanism needs retransmission in the case of large single access delay. FMI-NOMA mechanism utilizes the interaction between nodes and uses an election algorithm to aggregate information so that only part of the nodes are allowed to attempt access at a time. Moreover

this mechanism combines the power domain non-orthogonal method to improve the probability of successful node access and avoid repeated attempted access

so that the access performance and system resource efficiency can be further increased. We model the service delay and resource efficiency and establish the optimization model of resource efficiency to analyze the key factors affecting the performance of the proposed mechanism considering the number of swarm nodes

the outage probability between the formation nodes

and the outage probability of satellite-ground links and other factors. The simulation results show that the mechanism improves the resource efficiency by about 45% and reduces the access delay by about 12% compared with the CRDSA mechanism and the improved CRDSA3 mechanism in the literature which has advantages in the HEO satellite communication systems with expanding formation scale and intermittent satellite-ground links.

关键词

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