CALIOP数据在星载相干多普勒测风激光雷达性能仿真中的应用

发布时间：2018-05-01 16:08

本文选题：CALIOP + 相干多普勒测风激光雷达　；参考：《中国海洋大学学报(自然科学版)》2017年01期

【摘要】：利用2007—2008年21个月CALIOP测量的夜间气溶胶后向散射系数的全球三维平均分布数据取代传统仿真中的气溶胶模型数据,对晴空条件下的2.1μm相干多普勒测风激光雷达的测风性能进行了计算机仿真研究。仿真结果表明,采用合理的系统参数设计,在20°S至40°N之间4.5km海拔之下单激光脉冲的径向风速误差普遍小于1m/s。以1m/s作为可接受风速误差的标准,符合标准的最大可测量海拔高度向两极方向递减,在南极附近减至1~2km。若10个激光脉冲平均测量,在对流层下层风速误差可降至0.5m/s以内,且在35°N附近最大可测量海拔高度可达5.5km。
[Abstract]:The global 3D average distribution data of night aerosol backscattering coefficient measured by CALIOP for 21 months from 2007-2008 are used to replace the aerosol model data in the traditional simulation. The performance of 2.1 渭 m coherent Doppler wind lidar in clear sky is studied by computer simulation. The simulation results show that the radial wind velocity error of the 4.5km laser pulse is generally less than 1 m / s at the altitude of 20 掳S to 40 掳N using reasonable system parameter design. Using 1m/s as the standard of acceptable wind speed error, the maximum measurable altitude decreases to two poles and is reduced to 1km2 near the South Pole. If 10 laser pulses are measured on average, the error of wind speed in the lower troposphere can be reduced to less than 0.5m/s, and the maximum measured altitude near 35 掳N can reach 5.5 km.
【作者单位】：中国海洋大学信息科学与工程学院;
【基金】：国家自然科学基金项目(41228008;41376180)资助~~
【分类号】：TN958.98

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