摘要
文中简单介绍了机载气象雷达的基本结构,并分析了导航信息在雷达监视器上迭加显示的工作原理;为了在雷达ATE系统中实现对该功能的自动测试,提出了一种简单易行的测试方法,即通过ARINC429接口卡对导航信息进行记录和回放,然后采用基于DSP的视频测试卡输出或接收RGB编码信号,最终达到对雷达显示器及导航接口进行测试和故障隔离的目的;该测试方法已在国内某型机载机气象雷达ATE测试系统中获得成功应用。
The basic structure of onboard weather radar is introduced, and the working principle of how the navigation information is superposited on radar monitor is analyzed. For troubleshooting purpose, a direct yet simple method is adopted in radar ATE system. That is, first to receive and re--transmit navigation information with an ARINC429 card, and then to isolate the fault components by generating coded RGB signals or decoding the received RGB signals with a DSP based visual frequency testing card. The technique has been successfully implemented in an onboard weather radar ATE system.
出处
《计算机测量与控制》
CSCD
2008年第8期1074-1076,共3页
Computer Measurement &Control
