As one of the effective means of atmospheric detection, lidar is gradually developing towards miniaturization and lightweight. The detection and acquisition system needs to be integrated and optimized. It is necessary to develop a data acquisition system with high cost performance and self-control for the requirements of Lidar industrialization on performance and cost. In this paper, an integrated system of lidar detection and data acquisition (DAQ) is designed by using Field Programmable Gate Array (FPGA). The whole system has many advantages, such as small volume, low cost, convenient adjustment, high adjustment accuracy, convenient acquisition and so on.
For uniform spherical particles, there is no spatial orientation problem.However, for non-spherical particles, the light scattering characteristics of non-spherical particles change when their spatial orientation changes.In this paper, the variation trend of depolarizability of super-ellipsoid dust aerosol particles as they rotate in space is studied.The spatial orientation has a great influence on the depolarizability of particles.In different directions, the peak value of particle depolarization is about 0.8 or the peak value of particle depolarization is about 0.5.The average depolarizability of all particles in different directions is around 0.42.
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