摘要
文中对矿井隧道电磁干扰实测值进行分析,针对漏泄通信系统使用频段内的电磁干扰,使用扩频和组合编码的方法对系统进行改进,提高系统的抗干扰能力,并在接收机中增加窄带干扰抑制器抑制窄带脉冲干扰。文章同时给出了系统中基地台站、中继器、移动台改进电路以及漏泄通信电缆的扩频方法,此方法同样适合于对其他漏泄通信系统的改进。
In this paper the test data of the electromagnetic interference in mine tunnel is analyzed. Aiming at the frequency channel interference of leaky communication system, the frequency modulation is modified and the anti-interference performance of the system is raised by using DSSS and combination code in the transmission information channel and adding NW interference suppressor in receiver. The modified circuits for main station, repeater, mobile telephone in the system are given, including spreading spectrum method for the leaky communication cable. The method is also suitable for the improvement of other leaky communication systems.
出处
《通信技术》
2007年第11期123-124,237,共3页
Communications Technology
关键词
漏泄通信
扩频通信
电磁干扰
漏泄电缆
leaky communication
spread spectrum communication
electromagnetic interference
leaky cable
