Output characterization of ground-based and integrated optical sensor for retrieved aerosol error minimization

Abstract

Lidar (Light Detection and Ranging) Raman outputs signals cannot be acquired in digital way because of technical restrictions in its present configuration. On the contrary, DIAL (Differential Absorption Lidar) Lidar has this opportunity due to the instrumentation operating mode. Remote-monitoring laser instrumentation has the capability of detecting energy backscattered from the atmosphere, namely coming particularly from aerosol particles. In spite of the presence of filtering devices in the system, output signal is affected by different noises. One of the main optical sensing instrumentation, based on laser technique, is lidar (light detection and ranging). In this paper we describe an alternative way of characterizing information content of an experimental lidar in order to minimize the error of retrieving aerosol. In this way, by using digital filtering, we can optimize the output signal with respect to noise. We also do a comparison between traditional window technique and adjustable one using Kaiser procedure.