一种适合现场保障的新型雷达噪声系数测试仪

A New Style of Radar Noise Figure-measuring Instrument to Fit Scene Support

雷达接收机的噪声系数直接影响到雷达的作用距离,是衡量雷达接收机工作性能的重要指标,本文针对雷达现场保障设备的需求,采用大动态对数放大器AD8310,设计了一款专用雷达噪声系数测试仪,能够适应雷达接收机增益大动态变化的特点及外场温度大幅度变化的环境,已经试用于某对空警戒雷达保障系统,并取得了较理想的效果。

The noise figure of radar receiver can affect the radar range directly, and it is an impor- tant technical parameter to scale radar receiver＇ s working capability. In view of the demands of the scene support equipment, a large dynamic logarithmic amplifier AD8310 is selected, and a delicated radar noise figure-measuring instrument is designed, Which can adapt to the large dynamic of radar receiver and the change of temperature in fields , and have been tried out on a radar support system of antiaircraft security successfully.