摘要
设计了基于双光路原理的海水固有光学参数测量仪。该仪器可同步测量水体光谱吸收系数a、光束衰减系数c和体散射系数b。其中吸收系数a采用反射式吸收管测量,光束衰减系数c采用全吸收式样品池测量,体散射系数b根据c=a+b计算。光信号由光纤收集、光谱仪分光后用CCD探测器测量。光谱分辨率为4nm,灵敏度为0 001m-1。该仪器直接在水下工作,由水泵抽取被测海水,水下最大工作深度为200m。测量数据可以自动记录,同时也可以通过水下电缆实时传输到调查船实验室。
An instrument for measuring inherent optical properties of sea water is designed based on the principle of double optical path. The inherent optical properties, absorption, beam attenuation and volume scattering coefficient of sea water, can be measured simultaneously. The absorption coefficient a and the bema attenuation coefficient c of sea water are measured using a reflective tube and an absorptive tube, respectively, and the volume scattering coefficient b is calculated according to the relationship c=a+b. The light signal is collected and transferred into the entrance slit of a spectrometer and then measured by CCD device, which has the spectral resolution of 4 nm and the sensitivity of 0.001 m-1. The instrument can work directly in underwater with maximum underwater operation depth of 200 m. The sea water is pumped by a micro pump. Thus a profile of inherent optical properties of sea water is obtained. The measuring data can be auto-recorded and can transport real timely to the shipboard platform through an underwater cable.
出处
《光学技术》
EI
CAS
CSCD
2003年第2期139-141,145,共4页
Optical Technique
基金
863计划课题
中国科学院科研装备资助项目
