“数字无线电系统设计”课程挑战实验平台设计

Challenging Experimental Platform Design of“Digital Radio System Design”

自主设计了一种双天线无线电测向实验平台。平台由智能小车承载的双天线测向测距接收机完成对远距离信标信号的接收与解调,并提取距离、角度数据及传感器信息,实现对信标的搜索、定位、寻迹以及操作控制。实验平台采用超外差数字中频接收机结构,利用大规模可编程器件完成信号处理,可以作为电子信息工程专业高年级本科生的一种多层次数字无线电实验教学资源,实验解决方案综合应用多门专业课知识,具有较高的工程实用性,可以激发学生专业志趣、解决知识碎片化问题,使学生融会贯通专业理论与工程实践,培养学生解决电子信息工程系统设计问题的能力。

An experimental platform for dual antenna radio direction finding is designed independently.The platform is equipped with a dual-antenna direction finding and ranging receiver carried by an intelligent car to receive and demodulate longrange beacon signals,and extract range,angle,sensors information to realize beacon search,positioning,tracing and operation control.The experimental platform adopts superheterodyne digital IF receiver structure,and uses large-scale programmable devices to complete signal processing.It can be used as a multi-level digital radio experiment teaching resource for senior undergraduates majoring in EE.The experimental solution comprehensively applies the knowledge of multiple specialized courses and has high engineering practicability.The design process of experimental platform can stimulate students’professional interest and solve the problem of knowledge fragmentation,the design process also enables students to integrate professional theories and engineering practice,it cultivates students'ability to solve problems of electronic information engineering system design.