电子器件
電子器件
전자기건
JOURNAL OF ELECTRON DEVICES
2015年
1期
89-92
,共4页
测距机%抖频信号%伪随机序列%可变分频器
測距機%抖頻信號%偽隨機序列%可變分頻器
측거궤%두빈신호%위수궤서렬%가변분빈기
distance measuring equipment%jitter frequency signal%pseudo random sequence%variable frequency divider
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。
機載測距機繫統是現代飛機上必不可少的重要導航設備,DME測距的覈心是採取閃頻原理來實現應答脈遲的識彆,抖頻信號產生器是實現閃頻原理的關鍵電路。基于FPGA設計併實現瞭機載DME抖頻信號產生器電路,該電路主要包括隨機數髮生器、可變分頻器等模塊。經測試錶明,電路性能穩定,工作可靠。
궤재측거궤계통시현대비궤상필불가소적중요도항설비,DME측거적핵심시채취섬빈원리래실현응답맥충적식별,두빈신호산생기시실현섬빈원리적관건전로。기우FPGA설계병실현료궤재DME두빈신호산생기전로,해전로주요포괄수궤수발생기、가변분빈기등모괴。경측시표명,전로성능은정,공작가고。
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.
