摘要
噪声是影响接雷达收机灵敏度的主要因素。接收机噪声越小,灵敏度就越高,所能够接收的信号就越弱,雷达的作用距离也就越远。本文首先对雷达接收机噪声进行分析,给出雷达接收机噪声系数与噪声温度的关系,最后提出了几种降低接收机噪声的具体方法。
Noise is the main factor which affecting the sensitivity of radar receivers. As low as the noise of a receiver, the sensitivity will be much better, while the receiving signal can be lower, and the radar＇s effecting distance will be further. In this paper, it analyses the noise of radar receivers firstly, and then gives the reIations between noise figure and noise temperature. Lastly, the paper brings some methods which can be used to reduce the noise of radar receivers.
出处
《价值工程》
2012年第18期187-188,共2页
Value Engineering
关键词
雷达
接收机
噪声
灵敏度
radar
receiver
noise
sensitivity
