下面三个案例介绍了查找移动通信干扰源的经验和体会,查找和分析干扰的过程基本相同。随着移动通信的飞跃发展,移动通信网络全面延伸,受到各种干扰的机会越来越多,因此快速排除干扰源,保护移动通信的畅通是无线电监测工作的任务之一。查找无线电干扰是一项综合工程,必须具有先进的无线电监测网络、完善的台站数据库资料和一支训练有素的专业监测队伍。近年来,国家加大了无线电监测技术设施建设的力度,目前全国已基本建成了具有短波、卫星和超短波监测功能的网络。大多数省会和地市所在城市也建立了一定规模的由固定和移动监测站组成的监测测向网络,对干扰源可准确定位。一般干扰移动通信的信号较弱,必须采用移动测向系统,逼近查找。各案例中介绍的利用干扰源信号场强和频谱随监测点位置的移动而变化的规律,合理选择监测点,逐步逼近,确定干扰源是查找同频干扰的基本方法。无线电监测技术人员应当熟练地掌握这种技术,通过实际锻炼,不断提高查找干扰的能力。 The following three cases introduce the experience and experience of finding mobile communication interference sources. The process of finding and analyzing interferences is basically the same. With the rapid development of mobile communication, the mobile communication network extends all over and there are more and more opportunities for interference. Therefore, it is one of the tasks of radio monitoring to quickly eliminate interference sources and protect the smoothness of mobile communication. Finding radio interference is a comprehensive project that requires an advanced radio monitoring network, a well-established database of station databases and a well-trained professional monitoring team. In recent years, the state has stepped up the construction of radio monitoring technical facilities. At present, China has basically built a network with shortwave, satellite and ultrashort wave monitoring functions. Most provincial capitals and prefecture cities also have established a certain number of monitoring and direction finding networks composed of fixed and mobile monitoring stations, which can accurately locate the sources of interference. Generally interfere with the mobile communication signal is weak, we must use the mobile direction finding system, approaching find. In each case, the use of the signal strength of the interference source and the change of spectrum with the movement of the monitoring point, the reasonable selection of monitoring points, and the gradual approximation to determine the interference source is to find the basic method of co-channel interference. Radio monitoring technicians should master this technique skillfully and continuously improve their ability to find interference through practical exercises.