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根据瑞利散射双边缘技术测风原理,模拟仿真了不同大气温度下直接探测多普勒激光测风雷达的响应函数曲线,分析了大气温度对风速测量的影响。仿真结果表明,对不同的大气温度,系统有不同的响应曲线,同时风速越大,大气温度对风速测量的影响也越大。因此在系统设计中,需要根据最大风速和风速精度要求,确定所需大气温度分布精度,在风速反演中进行温度校正。通过数值仿真的方法,获得了在不同风速和大气温度下温度误差导致的风速误差估算公式。
According to the principle of Rayleigh scattering double edge technique, the response function curve of Doppler laser radar is directly simulated under different atmospheric temperatures, and the influence of atmospheric temperature on wind speed measurement is analyzed. The simulation results show that for different atmospheric temperatures, the system has different response curves, and the greater the wind speed, the greater the influence of the atmospheric temperature on the wind speed measurement. Therefore, in system design, it is necessary to determine the required accuracy of atmospheric temperature distribution according to the requirements of maximum wind speed and wind speed accuracy and correct the temperature in wind speed inversion. Through the numerical simulation method, the wind speed error estimation formula obtained under different wind speed and atmospheric temperature is obtained.