海底能见度测量方法的研究

发布时间：2018-08-04 08:20

【摘要】：文中对半导体激光器进行调制,用分束平片将被调制的激光束分成透射光束和反射光束,透射光束作为探测光束,反射光束作为参考光束。同时,测量探测光束在前向散射区35°角的散射光功率和参考光束的功率,用散射功率与参考光功率之比来计算角散射系数。激光器输出光功率波动时,探测光束和参考光束同步波动,散射光功率与参考光功率之比不受光源波动的影响。用2μm石英颗粒作为散射源,对构建的装置进行测试。结果表明,角散射系数与石英微粒浓度成线性关系,相关系数为0.99。双通道测量方式可以用于水底能见度的测量。
[Abstract]:In this paper, the semiconductor laser is modulated. The modulated laser beam is divided into transmission beam and reflection beam by split-beam flattening. The transmitted beam is used as the probe beam and the reflected beam as the reference beam. At the same time, the scattering power of the probe beam at 35 掳angle in the forward scattering region and the power of the reference beam are measured, and the angular scattering coefficient is calculated by the ratio of the scattering power to the reference light power. When the laser output optical power fluctuates, the detection beam and the reference beam fluctuate synchronously, and the ratio of the scattering light power to the reference light power is not affected by the light source fluctuation. Using 2 渭 m quartz particles as the scattering source, the device was tested. The results show that the angular scattering coefficient is linear with the concentration of quartz particles, and the correlation coefficient is 0.99. Two-channel measurement can be used to measure underwater visibility.
【作者单位】：江苏大气海洋光电探测重点实验室;江苏省大气环境与装备技术协同创新中心;南京信息工程大学物理与光电工程学院;南京信息工程大学电子与信息工程学院;
【基金】：公益性(气象)行业专项(GYHY201206037) 江苏省科技支撑计划资助项目(BE2010733)
【分类号】：P714;TN248

【相似文献】