天波信道分析数据库

天波信道分析数据库是指在重庆地区进行远程接入通信实验网实验，依托项目组已经建成的綦江、万州、城口、酉阳、荣昌、重庆邮电大学等短波远程接入网固定接入节点，构建短波远程综合接入网，对天波信道进行分析的数据库，其特性包括传输衰减，多径特性（如前面所发），频率占用情况，这些信道特性还受传输距离，地理环境因素，电离层昼夜变化等因素的影响，属于需要提前测试并掌握的环境变量。通过对信道特性的数据库分析，合理设计短波电台布局，调整发射功率，天线指向性，合理选择信道，波形设计，编码设计，提高通信质量。

The Sky-wave Channel Analysis Database is a specialized dataset for sky-wave channel analysis, built on a short-wave remote access communication experimental network deployed in the Chongqing region. Specifically, the project team has constructed fixed short-wave remote access network nodes in Qijiang, Wanzhou, Chengkou, Youyang, Rongchang, and Chongqing University of Posts and Telecommunications, based on which a short-wave remote comprehensive access network is established. The database covers key channel characteristics including transmission attenuation, multipath characteristics (as mentioned previously), and frequency occupancy. These characteristics are affected by multiple factors such as transmission distance, geographical environment, and diurnal variations of the ionosphere, all of which are environmental variables that require pre-testing and mastering. Through database-based analysis of these channel characteristics, one can rationally design the layout of short-wave radio stations, adjust transmit power and antenna directivity, select appropriate communication channels, optimize waveform and coding designs, and ultimately improve communication quality.

搜集汇总

背景与挑战

背景概述

天波信道分析数据库是由重庆邮电大学构建的短波远程综合接入网数据库，主要用于分析天波信道的传输衰减、多径特性和频率占用情况，受地理环境和电离层变化影响。该数据库有助于优化短波电台布局和通信质量设计，数据量为5.07GB，包含2个文件。