应急通信系统中卫星与地面网络的协同覆盖策略 -通信工程专业

摘要

随着自然灾害和突发事件频发，应急通信系统在保障信息传递中的作用日益凸显。然而，传统地面网络在灾害场景下易受破坏，而卫星通信虽具备广域覆盖能力，但受限于传输时延和带宽不足等问题，难以独立满足复杂应急需求。通过引入自适应切换机制，该策略能够根据实时环境调整卫星与地面网络的协作模式，从而有效降低传输中断概率并提高数据吞吐量。仿真结果表明，在典型灾害场景下，所提方法较单一网络方案可将覆盖效率提升约30%，同时显著改善用户体验。本文的主要创新点在于提出了多维度协同优化框架，并验证了其在复杂应急环境下的适用性与优越性，为未来应急通信系统的构建提供了理论支持和技术参考。

关键词：应急通信系统；卫星与地面网络协同；动态场景建模；联合优化算法；自适应切换机制

Collaborative Coverage Strategy of Satellite and Terrestrial Networks in Emergency Communication Systems

英文人名

Directive teacher:×××

Abstract

With the frequent occurrence of natural disasters and emergencies, emergency communication system plays an increasingly prominent role in ensuring information transmission. However, traditional terrestrial networks are vulnerable to damage in disaster scenarios, while satellite communications, although capable of wide-area coverage, are limited by transmission delay and insufficient bandwidth, making it difficult to independently meet complex emergency needs. By introducing adaptive switching mechanism, the strategy can adjust the cooperation mode between satellite and ground network according to real-time environment, thus effectively reducing transmission interruption probability and improving data throughput. Simulation results show that in typical disaster scenarios, the proposed method can improve coverage efficiency by about 30% compared with a single network scheme, while significantly improving user experience. The main innovation of this paper is to propose a multi-dimensional collaborative optimization fr amework, and verify its applicability and superiority in complex emergency environment, which provides theoretical support and technical reference for the construction of emergency communication system in the future.

Keywords: Emergency Communication System；Satellite And Ground Network Coordination；Dynamic Scene Modeling；Joint Optimization Algorithm；Adaptive Switching Mechanism

引言 1

一、卫星与地面网络协同覆盖的基础理论 1

(一)应急通信系统概述 1

(二)卫星通信技术基础 2

(三)地面网络技术特点 2

二、协同覆盖的关键技术分析 3

(一)覆盖范围优化方法 3

(二)信号干扰与协调机制 3

(三)网络切换技术研究 4

三、应急场景下的协同策略设计 4

(一)应急需求分析与建模 5

(二)动态资源分配策略 5