一种广播电视信号功率低空辐射测试系统

A Broadcast and TV Signal Power Radiation Test System

文章设计了一种基于无人机平台的广播电视信号辐射测试系统,该系统主要由无人机运载平台、天线、接收机、计算机及测试软件组成。测试时在合适的地点架设该系统,输入相应信息,系统将完成对相应频点的广电信号接收、存储、运算,并得出发射端等效EIRP。实际测试结构表明,该系统运行稳定,测试误差小于3 dB,解决了以往广播电视发射设备传导测试过程中因协调难度大、耦合口缺损无法进行测试的问题,并使得广播电视发射设备管理从仅对发射机的考察,上升为对包括发射机、馈线、发射天线在内的整个发射系统的综合考察,提高了广播电视发射设备管理水平。

In this paper,a low altitude test system of TV signal power radiation based on UAV platform is designed.The system consists of a UAV subsystem,an on-board test subsystem,and test software.The UAV is used to transport the test equipment to the same height as the TV transmitting antenna to collect the transmitted signal,and then,the signal is calculated,stored,and displayed by the automatic test software in the test system,calculating out more accurate test results.The actual test verifi cation results show that the measurement error of the TV signal power is within 3 dB,which is far less than the measurement error tested on the ground.It can effectively solve the diffi culties caused by complex environment and equipment defects when tested on the ground,thereby improving test effi ciency and effectiveness.