电视台广播发射射频系统信号冲突消除方法  

作　　者：王霞 

机构地区：[1]泰安市广播电视台技术中心,山东泰安271000

出　　处：《现代传输》2024年第5期43-46,共4页Modern Transmission

摘　　要：常规的电视台广播发射射频系统信号冲突消除方法主要以冲突状态识别为主,并未将噪声信号与冲突信号分离处理,影响最终的信号冲突消除效果。因此,本文设计了电视台广播发射射频系统信号冲突消除方法。首先,分离广播发射射频系统冲突信号,根据广播发射频率与功率的差异,区分正常信号与冲突信号,并提取出冲突信号特征,确保后续冲突信号消除效果。其次,构建广播发射射频系统信号冲突消除模型,实时监测电视台广播发射射频系统信号冲突,并以动态调整发射参数的形式,降低信号冲突的可能性。然后,利用四电平信号拟合正弦与余弦信号,通过信号叠加与重构,消除不同次数的谐波信号,确保广播发射射频系统的正常使用。最后,通过对比实验验证了该方法的信号冲突消除效果更佳,可以应用于实际生活中。The conventional method for eliminating signal conflicts in radio frequency systems for television broadcasting mainly relies on identifying conflict states, without separating noise signals from conflict signals, which affects the final signal conflict elimination effect. Therefore, this article proposes a method for eliminating signal conflicts in the radio frequency transmission system of television stations. Firstly, separate the conflicting signals of the broadcast transmission RF system, distinguish between normal signals and conflicting signals based on the difference in broadcast transmission frequency and power, and extract the characteristics of conflicting signals to ensure the effectiveness of subsequent conflicting signal elimination. Secondly, a model for eliminating signal conflicts in broadcast transmission RF systems is constructed to monitor real-time signal conflicts in television broadcast transmission RF systems, and dynamically adjust transmission parameters to reduce the possibility of signal conflicts. Then, using a four level signal to fit sine and cosine signals, the harmonic signals of different orders are eliminated through signal superposition and reconstruction, ensuring the normal use of the broadcast transmission RF system. Finally, comparative experiments were conducted to verify that the signal conflict elimination effect of this method is better and can be applied in practical life.

关 键 词：电视台 广播 发射 射频系统 信号冲突 消除方法 

分 类 号：TN948.53[电子电信—信号与信息处理]