引言在无线电短波通信和超短波散射通信中,经常会出现快衰落现象,使接收信号电平发生变化,因而严重地影响到通信的稳定。克服快衰落的主要措施之一是采用分集接收方式,以提高电路的质量。本文对采用分集接收的技术经济效果给予数量上的估计,并对我国短波无线电通信采用分集接收的原则规定作简要的评述,指出这一原则规定还欠全面,需要加以充实。最后,本文提出用临界分集接收功率的概念作为采用分集接收的标准。 Introduction In the radio shortwave communication and the ultrashort wave scattering communication, fast fading often occurs, so that the received signal level changes, thus seriously affecting the stability of the communication. One of the main measures to overcome the rapid decline is to adopt diversity reception to improve the quality of the circuit. This paper gives a quantitative assessment of the technical and economic effects of diversity reception and gives a brief review of the principle of diversity reception for shortwave radiocommunication in our country. It points out that this principle still lacks comprehensiveness and needs to be substantiated. Finally, this paper proposes to use the concept of critical diversity receive power as a standard for diversity reception.