摘要
介绍了民用航空飞行中伏尔导航系统(VOR),在精密进近和着陆中的应用及其性能的比较。针对伏尔导航接收机的不同模式进行结构与性能上的分析,采用当前流行的FPGA等先进数字信号处理技术,提出了不同模式下接收机的硬件实现方案,伏尔导航系统的基本工作原理和相应的方案论证,以及处理过程中一系列适合FPGA实现的新算法、新思路。包括调频、调幅信号的调制解调技术,30Hz可变相与基准相的相位比较技术,数据后处理技术,以及IIR滤波器的性能分析及其FPGA的巧妙实现。
This paper presents some new ideas and optimizations in the design and realization of VOR navigation receiver. Different kinds of VOR systems are introduced briefly. After a brief introduction to different kinds of VOR systems, a scheme of VOR navigation receiver is proposed based on digital processing technique such as FPGA, including the demodulation of the -complex signal of AM, FM, comparison of the basic phase with variable phase of 30 Hz, improvement of precision of the calculated phase, and the FPGA implementation of IIR filters.
出处
《电子科技》
2010年第1期77-80,共4页
Electronic Science and Technology
