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海洋激光雷达水体光学特性参数反演模型对比及分析

Comparison and Analysis of Inversion Models for Water Optical Property Parameters by Ocean Lidar

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摘要

激光雷达回波中的多次散射量决定了衰减系数KLidar, 从而对水体光学特性参数的反演产生影响。目前的海洋激光雷达理论中, 均以Walker-McLean模型和多次前向-单次后向散射模型的公式形式表示多次散射分量。根据水下激光传输机制, 分析了这两种模型中多次散射因子的等效性, 并将其多次散射项进行对比, 讨论了利用这两个模型反演水体光学特性参数的异同。对比两种模型的散射相函数发现, Walker-McLean模型更符合实测情况; 多次前向-单次后向散射模型适应于前向散射极强的介质。在激光刚进入水体时, 其水体光学特征参数反演值会偏低, 并随着多次散射次数的增加而变得偏高。

Abstract

The proportion of multiple scattering in the lidar echo determines the attenuation coefficient KLidar, which affects the inversion of the water optical property parameters. At present, the Walker-McLean model and the multiple forward scattering-single backscattering model are both expressed with the formula form to describe multiple scattering components in the theory of ocean lidar. Based on the underwater laser transmission mechanism, the equivalence of multiple scattering factors in these two models is analyzed, and the items involving multiple scattering are compared to discuss the similarities and differences of these inversion models for water optical property parameters. Based on the comparison of scattering phase functions of the two models, it is found that the results obtained based on the Walker-McLean model are more consistent with measured results. Multiple forward scattering-single backscattering model is suitable for medium with strong forward scattering. The inversion value of water optical properties is lower than the actual value when the laser just enters into water, and it gets higher value as the multiple scattering times increase.

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中图分类号:P733.3

DOI:10.3788/aos201737.1001005

所属栏目:大气与海洋光学

基金项目:国家自然科学基金(61505221)、科技重点专项(2016YFC1402602)、中科院项目(YZ201522)

收稿日期:2017-04-11

修改稿日期:2017-05-23

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李晓龙:中国科学院海洋研究所, 山东 青岛 266071
陈永华:中国科学院海洋研究所, 山东 青岛 266071
于 非:中国科学院海洋研究所, 山东 青岛 266071
姜静波:中国科学院海洋研究所, 山东 青岛 266071
贺 岩:中国科学院上海光学精密机械研究所空间激光信息传输与探测技术重点实验室, 上海 201800
陈卫标:中国科学院上海光学精密机械研究所空间激光信息传输与探测技术重点实验室, 上海 201800
李 杰:国家海洋局第一海洋研究所, 山东 青岛 266061

联系人作者:李晓龙(lixiaolong@qdio.ac.cn)

备注:李晓龙(1985-), 男, 博士, 高级工程师, 主要从事海洋信息探测技术方面的研究。

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引用该论文

Li Xiaolong,Chen Yonghua,Yu Fei,Jiang Jingbo,He Yan,Chen Weibiao,Li Jie. Comparison and Analysis of Inversion Models for Water Optical Property Parameters by Ocean Lidar[J]. Acta Optica Sinica, 2017, 37(10): 1001005

李晓龙,陈永华,于 非,姜静波,贺 岩,陈卫标,李 杰. 海洋激光雷达水体光学特性参数反演模型对比及分析[J]. 光学学报, 2017, 37(10): 1001005

被引情况

【1】刘娜,柯杰耀,杨苏辉,赵长明,张海洋. 载波调制高斯脉冲激光水下传输特性的仿真分析. 光学学报, 2018, 38(4): 401003--1

【2】吕德亮,贺岩,俞家勇,陈丽明,王永星,刘辉. 机载双频激光雷达结构误差与定位精度研究. 激光与光电子学进展, 2018, 55(8): 82806--1

【3】贺岩,胡善江,陈卫标,朱小磊,王永星,杨忠,朱霞,吕德亮,俞家勇,黄田程,习小环,瞿帅,姚斌. 国产机载双频激光雷达探测技术研究进展. 激光与光电子学进展, 2018, 55(8): 82801--1

【4】胡善江,贺 岩,陈卫标,朱小磊,臧华国,吕德亮,田茂义,俞家勇,陶邦一,黄田程,王 成,习晓环,张晓丽,瞿 帅. 机载双频激光雷达系统设计和研制. 红外与激光工程, 2018, 47(9): 930001--1

【5】刘梦庚,贺岩,陈卫标,王永星,朱霞,石先高,黄田程,张宇飞. 海洋激光雷达的自适应深度提取算法. 中国激光, 2018, 45(10): 1010001--1

【6】程虎,李微,郭文平,杨克成. 基于高斯过程回归的距离选通成像系统工作参数的在线优化. 光学学报, 2019, 39(4): 412010--1

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