【摘要】 介绍了基于Fabry Perot(F P)标准具的直接探测多普勒激光雷达的风速测量原理,讨论了接收光发散角对F P标准具测风激光雷达系统设计参数和多普勒频率测量精度的影响,并数值计算了激光多普勒雷达系统的光束发散引起的多普勒速度测量误差,结果表明:入射光束发散角小于Imrad时,相对误差随发散角的变化缓慢,在6%之内;而当大于约Imrad时,相对误差迅速增大,在2mrad时达到约40%。更多还原

【Abstract】 The principle of wind measurement for a direct detection Doppler wind lidar with a Fabry-Perot etalon is described in the paper.The Doppler measurement error as well as the designed system parameters are affected by the beam divergence to the etalon.The numerical calculation for a designed Doppler lidar system has shown that the percentage error is increased slowly to 6% for the beam divergence less than lmrad,and quickly to about 40% at 2mrad.更多还原