基于FPGA的机载DME抖频信号产生器设计及实现  

Onboard DME Jitter Frequency Signal Generator Design and Implementation Based on FPGA

作　　者：王凯[1] 樊智勇[2] 周德新[1] 

机构地区：[1]中国民航大学航空自动化学院,天津300300 [2]中国民航大学工程技术训练中心,天津300300

出　　处：《电子器件》2015年第1期89-92,共4页Chinese Journal of Electron Devices

基　　金：国家自然科学基金项目(61179044);国家973计划项目(2014CB744904);中央高校基本科研业务费项目(ZXH2011C013)

摘　　要：机载测距机系统是现代飞机上必不可少的重要导航设备,DME测距的核心是采取闪频原理来实现应答脉冲的识别,抖频信号产生器是实现闪频原理的关键电路。基于FPGA设计并实现了机载DME抖频信号产生器电路,该电路主要包括随机数发生器、可变分频器等模块。经测试表明,电路性能稳定,工作可靠。The Distance Measuring Equipment is one of the essential onboard navigation systems. Identification of reply pulse,which adopts a strobe frequency principle,is the kernel of DME distance measuring. The jitter frequency signal generator is the most important circuit to implement strobe frequency. Based on FPGA,an onboard DME jitter frequency signal generator circuit is designed and implemented. The circuit consists of a random number generator,variable frequency divider,etcetera. Testing shows the circuit operates with stable performance and high reliability.

关 键 词：测距机 抖频信号 伪随机序列 可变分频器 

分 类 号：TN965[电子电信—信号与信息处理]