中短波广播发射机间电磁干扰问题的解决对策分析
2021-12-31郑虹
郑虹
摘 要:随着当前科学技术的不断发展,中短波广播发射机得到一定的进步,极大地推动了中短波广播播出工作的创新应用。但在实际工作过程中,由于该系统内存在诸多子系统和设备,如监控系统、控制系统以及值班系统等,在运行时往往会出现电磁干扰问题,影响发射机讯号的传播质量。鉴于此,该文主要分析中短波广播发射机间的电磁干扰问题,通过分析其现状以及存在问题,提出相关有效的解决对策,旨在进一步促进广播事业的健康、稳定发展。
关键词:中短波广播发射机 电磁干扰 广播讯号质量 解决对策
中图分类号:TN934.81 文献标识码:A 文章编号:1672-3791(2021)10(b)-0000-00
Countermeasure Analysis of Electromagnetic Interference between Medium and Short Wave Broadcast Transmitters
ZHENG Hong
(State Administration of Radio and Television 761,Yongan,Fujian Province,366000 China)
Abstract: With the continuous development of current science and technology, medium and short wave broadcast transmitters have made certain progress, which has greatly promoted the innovative application of medium and short wave broadcast work. However, in the actual work process, due to the many subsystems and equipment in the system, such as the monitoring system, control system, and duty system, electromagnetic interference problems often occur during operation, which affects the transmission quality of the transmitter signal. In view of this, this article mainly analyzes the electromagnetic interference between medium and short wave broadcast transmitters, analyzes its current situation and existing problems, and proposes relevant and effective solutions, aiming to further promote the healthy and stable development of the broadcasting industry.
KeyWords: Medium and short wave broadcasting transmitters; Electromagnetic interference;Broadcast signal quality; Countermeasures
就現阶段而言,用于广播通信行业的中短波广播发射机最理想的工作状态,是不受外界任何干扰。不过在实际运作环节,中短波广播发射机之间的电磁干扰现象仍然存在,对广播信号的正常传输会造成较大的影响,致使广播中心工作质量和效率不高。由此,在实践工作中,相关人员应当结合现代理念以及技术措施,切实解决中短波广播发射机电磁干扰的现状,推动广播通讯系统稳定运行。
1 中短波广播发射机的现状
中短波广播发射机是发送传播讯号的关键设备,在革新发展的过程中,发射机设备配置逐渐趋向优化,促使系统在运行时,脉冲信号的工作频率范围较大,而且与部分通信设备的频段相同。在电磁环境越来越复杂的情况下,很容易产生干扰现象。比如:当单次辐射空间超过最大限度,就会严重干扰计算机的稳定工作状态,影响发射机的传播信号质量[1]。……
