软件化塔康信标模拟系统的设计

摘要

针对塔康导航系统的测试需求,结合软件无线电技术,设计并实现了塔康信号模拟系统;首先介绍了塔康导航台导航的原理,包括:测向原理和测距原理;接着,根据塔康导航台信号的特点,给出信号模拟系统的需求分析;在需求分析的基础上,完成了信号模拟系统的总体方案设计、硬件结构组成及软件的模块化设计;然后,根据塔康信号模拟系统信号的模块化设计,对各个模拟信号模块进行详细设计,并在GNU Radio上编程实现;最后,搭建了信号模拟系统测试试验平台,在平台上完成了模拟系统各个信号模块的测试验证,并对塔康信号模拟系统进行了功能试验验证.%This paper designs and achieves the TACAN excitation source using software radio technique,based on the testing need of TACAN (Tactical Air Navigation) system.Firstly,this paper introduces the principle of TACAN navigation,including:the principle of direction finding and ranging.Secondly,the demand analysis is given combined with signal character analysis.Then the general design,hardware structure constitution and software module design are finished based on the former analysis,and a software radio platform-USRP N210 is chosen as hardware application platform.Thirdly,the detail design for each signal module is completed and programed on GNU Radio.Finally,the experiment platform for signal simulation system testing is constructed,and each signal module is verified on the platform,as well as the function of TACAN signal simulation system.