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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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锚泊光学浮标浮体设计及近海试验
Keywords: 海洋光学,光学浮标,水色遥感,定标与检验
Abstract:
？文中设计的光学浮标采用了柱状浮体,提出了自由旋转的马鞍链结构。理论计算结果表明,该光学浮标一是初稳性高度大,二是光学浮标重心位于浮心之下,浮标的摇摆角较小,抗倾斜及倾覆能力强。海上试验结果表明,对于风力7节、浪高3—4m以下的海况,浮标倾角≤5°的次数占总采样次数的54%,浮标倾角≤10°的次数占总采样次数的83%,浮标性能较好地满足了水下光辐射测量的技术要求。为减小阴影效应带来的光辐射测量误差,文中采用了两种解决方法:一是伸臂结构解决浮标体阴影的影响,当太阳天顶角为0°时,在近岸或者清洁水体中浮标体阴影引起的向上辐亮度测量误差分别不大于4%和1%;二是光纤光谱仪测量技术减少仪器自阴影的影响,设计的光谱辐照度和辐亮度光学探头直径均为0.042m,当水体光束衰减系数为0.12m-1,太阳天顶角为10°时,自阴影引起的向上辐亮度测量误差仅为1.5%。
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