MLS接收机数字滤波器设计研究  

Design and Study on Digital Filter of MLS Receiver

作　　者：张浩杰[1] 李晓明[1] 裴文林[1] 

机构地区：[1]空军工程大学电讯工程学院,陕西西安710077

出　　处：《电视技术》2011年第13期41-43,63,共4页Video Engineering

摘　　要：接收机内部滤波器的性能直接影响接收机对信号的解调计算精度,传统的接收机采用模拟式滤波器结构,结构繁琐且信号预处理精度不高。基于软件无线电,运用中频数字化技术,提出了一种微波着陆系统(MLS)接收机数字滤波器设计方案,并对方案进行了仿真和实际的测试,验证了方案的可行性。The signal demodulation precision of receiver is affected directly by the performance of the internal filter. The analog filter is adopted by traditional receivers, structure of which is cockamamie and the precision of signal pretreatment is not very high. The structure of digital filter of Microwave Landing System （MLS） receiver is studied by the approach of intermediate frequency digitization technique on the basis of software radio. At last, the feasibility of design scheme is validated by the simulations and practical tests in this paper.

关 键 词：微波着陆系统 中频数字化 积分梳状滤波器 半带滤波器 

分 类 号：TN713[电子电信—电路与系统]