摘要
分析了机载四波束多普勒测速雷达的工作原理,采用直接数字频率合成(DDS)技术进行多普勒频移模拟器的设计,通过数字控制,该模拟器可以产生高分辨率的多普勒频率信号；在此基础上,设计了一套基于虚拟仪器技术的多普勒导航雷达自动检测系统,硬件平台基于高可靠的PXI总线,软件采用Labwindows／CVI开发；该系统具有操作简单、自动化程度高、实时性强、便于扩展等特点；雷达检测系统经过实际使用运行,证明其达到了设计指标的要求,测试应用效果良好。
A virtual instrument based integrated measurement system for Doppler navigation radar is developed. Using direct digital synthesis （DDS） technique, a kind of radar Doppler frequency simulator is introduced. High reliable PXI Bus system is used to construct its hardware architecture and LabWindows/CVI is used as software development tool. The application of the system shows that it has many advantages such as easy to use, convenient operation, operate at real time and expandable.
出处
《计算机测量与控制》
CSCD
2006年第7期921-923,共3页
Computer Measurement &Control
关键词
多普勒导航
直接数字合成
虚拟仪器
PXI总线
Doppler navigation radar
direct digital synthesis
virtual instruments PXI Bus
