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- 2018
不同函数拟合水体后向散射波形对激光测深精度的影响
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Abstract:
为了提高激光测深数据处理结果的精度，在原有的激光测深回波信号拟合方法的基础上，结合信号形成的物理过程，提出使用指数函数模拟激光测深水体后向散射回波成分的方法。利用Wa-LiD（Water LiDAR）工具生成了多组模拟数据集以对比和检验提出的新方法。对于每个可探测回波，海面回波和海底回波均使用高斯函数进行拟合，水体后向散射波形分别使用三角形、四边形、指数函数进行拟合。实验结果显示，指数函数测深误差统计量明显优于三角形和四边形拟合方法，且更适用于拟合不同水质和水深条件下水体后向散射回波信号。同时检验了体积散射函数取180°时数值对测深回波信号探测结果的影响
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