摘要
在雷达接收机电路中,对数中频放大器(简称中放,下同)对各种干扰都有较强的抑制作用,与雷达接收机灵敏度有直接的关系。本文通过对CTL-713C数字化天气雷达双增益对数中频放大器工作原理的阐述,分析了对数中频放大器与雷达灵敏度的关系,并就对数中频放大器常见故障与检修方法进行了介绍。对了解、维护对数中频放大器及提高接收机维修水平有一定的作用。
In the radar receiver electric circuit, the logarithmic intermediate frequency amplifier all has the stronger inhibition to each kind of disturbance, which has the direct relations with the radar receiver sensitivity. Through the elaboration of the work principle of the CTL-713C digitization weather radar double gain logarithmic intermediate frequency amplifier, the paper analyzed the relations between the logarithmic intermediate frequency amplifier and the radar sensitivity, and introduced on the logarithmic intermediate frequency amplifier common breakdown and the overhaul method. The paper has certain function to understand and maintain the logarithmic intermediate frequency amplifier and enhance the receiver overhaul lever.
出处
《气象与环境科学》
2008年第B09期232-234,共3页
Meteorological and Environmental Sciences
关键词
天气雷达
对数中频放大器
接收机灵敏度
Weather radar
Logarithm intermediate frequency amplifier
Sensitivity
