摘要
精密测距(DME/P)无线电导航系统与微波着陆系统配合,为进场飞机提供精密进场着陆引导。基于FPGA+DSP硬件平台,提出了数字中频处理DME/P的一种实现方法,详细分析了数字化DME/P采用的技术:数字中频解调技术、DAC检测技术、信号识别和搜索技术以及α-β滤波技术。通过飞机实际飞行试验,该方法能够完全满足DME/P功能的性能指标,为DME/P设备的小型化和数字化提供了可靠的科学依据。
Digital distance measuring equipment/precision（DME/P） radio navigation system with microwave landing system provides precisely landing guidance for the approaching plane.An implementation method of DME/P processing for digital intermediate frequency on the basis of FPGA＋DSP hardware platform is proposed.The technologies applied for digital DME/P are analyzed including digital intermediate frequency demodulation,DAC technology,signal recognition and searching technology,as well as α-β filtering technology.The method can satisfy the requirement of DME/P performance index by aircraft flight test and provide reliable scientific basis for miniaturization and digitization of DME/P instrument.
出处
《现代电子技术》
2012年第7期161-163,共3页
Modern Electronics Technique
