“基于时分双工的消防单兵多媒体通信系统”是公安部沈阳消防研究所承担的公安部应用创新计划项目《基于时分双工的消防单兵多媒体通信系统》的一项研究成果。项目组针对复杂环境条件下消防通信实战需求,综合利用双向变频放大、时分双工、MESH技术,在无线信号绕射能力较强的340 MHz频段,成功开发了基于时分双工的新型消防单兵多媒体 “Time-division duplex fire brigade multimedia communications system ” is the Ministry of Public Security Shenyang Institute of Fire assumed Ministry of Public Security Application Innovation Project “based on time-division duplex fire brigade multimedia communications system,” a research results. In response to the actual needs of fire communication under complex environment conditions, the project team successfully developed a new type of fire brigades based on time-division duplex in the frequency band of 340 MHz with strong radio diffractions based on bidirectional frequency conversion amplification, time division duplexing and MESH technology multimedia