Analysis on sea surface scattering of Doppler lidar in space
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摘要: 为了验证受海表面风速驱动的海表面反射率模型和计算海表面信号进行零风速校准的精度，开展了激光雷达海表面散射信号强度和速度特征的分析。在强度特征信息方面，进行了海表面反射率仿真模型和机载激光雷达海面散射信号实测数据的对比，考虑激光水下散射，参考QuikSCAT的海表面风速大小，测量结果和模型曲线基本吻合。在速度特征方面，通过海表面运动波形的仿真和海表面速度信息的提取，考虑波面的垂直和水平运动，采用时间积分的海表面探测信号零风速校准误差小于0.2 m/s。Abstract: In order to validate the sea surface reflectance model stressed by wind and calculate the accuracy of zero-wind calibration by sea surface return, the intensity and velocity characters of sea surface return were analyzed. For the intensity characters, we compared the sea surface reflectance model to the Doppler lidar observation data, with the consideration of the contribution from subsurface reflectance, and a good consistent was showed with the local sea surface windspeed in the result referring to the windspeed of QuikSCAT sea surface. For the velocity characters, we simulated the sea wave shape with considering the vertical and horizontal movement and calculated the sea surface velocity information.The zero-wind correction accuracy for Doppler lidar with the temporal integral measurement was less than 0.2 m/s.
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Keywords:
- Dopper lidar /
- sea surface backscattering /
- zero-wind calibration /
- wave motion
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1. 梁秀娟，嵇海旭. 方差分析法下激光陀螺仪机械振动抑制技术. 机械设计与制造. 2022(05): 88-91+98 . 
百度学术
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