Wind velocity estimate and signal to noise ratio analysis of an all fiber coherent Doppler Lidar system
نویسندگان
چکیده
In CDL, a laser pulse is transmitted into the atmosphere and the Doppler shifted signal that scatters off of atmospheric aerosol particles is detected by beating this signal with a local oscillator (LO) [1][2][3] . The resulting RF signal has a Doppler shift proportional to the speed of aerosol particles along the line of sight of the laser beam. In this paper, we present preliminary results from our all fiber 1.5μ.m CDL. The range dependence of the theoretical wideband SNR of an atmospheric backscattered signal is compared to experimental results using a 6” diameter refractive telescope. The system performance is dependent on optimizing the LO power [4] and our previous research presented a detailed analysis of an optimum LO power and its effect on detector’s efficiency [5][6] .
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تاریخ انتشار 2011