摘要
为了解决机场低空超短波通信中障碍物的遮挡问题,在机场塔台和停机坪的飞机之间加装一个转发装置,通过改变电磁波的传播方向来实现超视距的传播,达到检验塔台电台与机载电台通话的目的。在转发装置设计过程中,采用双通道收发和半双工的方式,避免电台信号的相互干扰,采用提取中频信号进行检波并作为收发触发信号,来提高系统工作的稳定性,通过电平转换和电压比较判决来提高系统工作的可靠性。通过Proteus软件建立电路级仿真模型,按照系统工作流程分4个状态对电路的工作过程进行仿真,结果显示转换电路符合要求。通过转发装置的设计,为机场低空超短波通信遮挡问题提供了解决方案。
In order to solve the obstructions problem in the low-altitude ultrashort wave communication in the airport,a forwarding device is installed between the airport tower and the airfield to realize the over-the-horizon propagation by changing the propagation direction of electromagnetic waves,so as to test the communication effect between the tower station and the airborne radio station.In the design process of the forwarding device,the mode of bidirectional transceiver and half-duplex is adopted to avoid the mutual interference of the radio signals,and the intermediate frequency signal is extracted for detection and used as the trigger signal for transceiver,so as to improve the stability of the system,and the reliability of the system is improved by level conversion and voltage comparison decision.The circuit level simulation model is established by Proteus software,and the working process of the circuit is simulated according to the system workflow in four states.The results show that the conversion circuit meets the requirements.Through the design of the forwarding device,the paper provides a solution for the blocking problem of low altitude ultrashort wave communication in airport.
作者
田华明
刘云飞
田沿平
TIAN Huaming;LIU Yunfei;TIAN Yanping(Qingdao Branch,Naval Aviation University,Qingdao 266041,China)
出处
《电子设计工程》
2021年第15期156-160,共5页
Electronic Design Engineering
关键词
通信校波
视距遮挡
透明转发
收发控制
PROTEUS仿真
communication wave calibration
line-of-sight occlusion
transparent transmitting
transmit-receive control
Proteus simulation
作者简介
田华明(1970-),男,湖北蕲春人,硕士,副教授。研究方向:对空通信与导航技术、电子装备检测、电子电路设计与仿真等。
