摘要
一般测控系统中,上下行信号的本振指标是用相位噪声表示的,但是在评估系统上下行链路对测速影响时,一般使用阿仑方差计算,因此本文给出了相位噪声和阿仑方差的对应关系,并给出了S频段设备相位噪声对测速误差影响的简化计算方法,具有一定的工程指导意义。
In TT&C systems,the local oscillator index of the uplink and downlink signals is expressed by phase noise.However,when evaluating the impact of uplink and downlink on velocity measurement,Allen variance is generally used.Therefore,this paper gives the phase noise and Allen variance Corresponding relationship,and a simplified calculation method for the influence of phase noise of S-band equipment on the speed measurement error is given,which has certain engineering guidance significance.
作者
勾习睿
GOU Xirui(Watkinson School,Hartfotd 53027,America)
出处
《电声技术》
2020年第3期81-84,共4页
Audio Engineering
关键词
阿伦方差
相位噪声
测速
Allen variance
phase nois
velocity measurement
