【摘要】 从扩频通信的基本模型出发，计算了该系统对“白噪声干扰”“单频正弦干扰”和“其它扩频信号干扰”的处理增益，分析了各种型式的干扰对于扩频通信接收机模型这一系统的影响，证明了系统的处理增益都与频谱扩展的倍数成正比，说明了对信号频谱扩展得越宽，处理增益越大，抗干扰能力越强。一些书中已经给出了处理增益的分析，但理论推导过于繁琐，还有个别错误之处，本文给出了简洁明了的证明，修正了某些错误。我们希望本文的证明有助于推动扩频通信在煤矿系统中的应用研究。更多还原

【Abstract】 ：In this article, based on the mode of spread-spectrum communication, we have calculated the processing gain of system to white noise interference, to single-sine interference and to other interference of spread-spectrum signals, have analyzed the influence of various interference on the system model of spread-spectrum communication receiver, have proved that the processing gain of system varies directly as the times of spread of spectra, have illustrated that the wider the spread spectrum signals is and the higher the processing gain is, the more powerful the antidisturbance capability is. In other reference books, some calculations of processing gain had been made, but the theoretical deductions are too complex and something incorrect was made. This article has given the brief proving and has corrected some errors. We hope that this article will be helpful for giving impulse to the research of spread-spectrum communication used in coal mine system.更多还原