摘要
传统的分米波仪表着陆系统采用的是模拟信号体制,这使得系统接收机具有器件使用效率低、灵活性差和可扩展能力差等缺点,为此,一种中频数字化与FPGA信号处理相结合的分米波仪表着陆系统接收机被提出了。该数字化接收机主要由软件控制,通过对FPGA编程来进行数字信号处理,以实现其着陆引导功能。在克服了灵活性差、器件使用效率低等缺点的同时提高了系统的集成度,减少了负重,使之更加适于机载。
Traditional decimeter wave Instrument Landing Systems（ILS）use analog signal system,which have some disadvantages such as weak flexibility and extensibility,and low efficiency of equipment.Therefore,a digital decimeter wave ILS receiver which has combined IF digitalization and FPGA signal processing has been introduced.The digital receiver is controlled by software,its function is achieved by FPGA programming.This receiver improves system integration while overcomes the above disadvantages,and is more suitable for airborne application.
出处
《无线电工程》
2009年第3期37-40,共4页
Radio Engineering
