System for measuring scattering function of water body wide-angle body
A scattering function and measurement system technology, which is applied in the field of on-site synchronous measurement devices for wide-angle body scattering functions of water bodies, can solve problems such as the inability to obtain water body scattering coefficients, forward scattering coefficient scattering phase functions, etc., and achieve synchronization of measurement data and good repeatability and stability effects
Inactive Publication Date: 2009-04-22
SOUTH CHINA SEA INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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Problems solved by technology
At present, there have been commercialized scattering measuring instruments abroad for the study of the backward scattering characteristics of a water body at a fixed angle. The backscatter coefficient is calculated by measuring the volume scattering function of this angle, but the scattering coefficient, forward scattering coefficient and scattering phase function of the water body cannot be obtained by this measuring instrument
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[0020] The structural details of specific embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings:
[0021] See attached figure 1 , the device for measuring the scattering function of the wide-angle water body of the present invention has a semi-circular frame 10 on which a light source 1, a transmitted light detection probe 2 and 7 scattered light detection probes 3-9 are installed on the frame, wherein, The light source 1 and the transmitted light detection probe 2 are respectively located at both ends of the diameter of the semicircle, the transmitted light detection probe 2 is used to measure the 0° transmitted light signal, and the 7 scattered light detection probes 3, 4, 5, 6, 7, 8, 9 are located in seven different directions of 20°, 45°, 70°, 90°, 126°, 140°, and 160° respectively on the semi-circular frame, that is, the central positions of the field angles of the seven scattered light detection probe...
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Abstract
The invention provides a measuring system for a wide-angle volume scattering function of water body. The structure of the invention mainly comprises: a measuring device for volume scattering function of water body and a data acquisition circuit of the measuring system, wherein, the measuring device for volume scattering function of water body is composed of a light source, a transmitted light detecting probe and a plurality of scattered light detecting probes which are equipped on different positions of the toroidal radius of a semi-toroidal frame respectively so as to detect the transmitted light and scattering light signals from different directions ranging from 0 DEG to 180 DEG., the light source, the transmitted light detecting probe and all scattered light detecting probes are connected with the data acquisition circuit of the measuring system by a watertight cable, and the data acquisition and storage process of the measuring device is controlled by the data acquisition circuit of the measuring system. The measuring system can measure the transparency of water body and the volume scattering function of water body in different directions ranging from 0 DEG to 180 DEG synchronously both on-line and on-site, and can be used for profile analysis on scattering and inherent optical properties of water body on-site.
Description
technical field [0001] The invention relates to an on-site synchronous measuring device for the scattering function of a water body wide-angle body. Background technique [0002] Natural water bodies and various suspended particles and dissolved organic matter contained in them determine the optical characteristics of water bodies. The volume scattering function (VSF) used to describe the directionality of light scattering in water bodies is a very important inherent optical characteristic parameter of water bodies. Volume scattering function and absorption coefficient, according to the closure of the inherent optical properties of the water body (ie: a+b=c) and the correlation between the water body scattering function and each scattering coefficient, other inherent optical characteristic parameters of the water body can be calculated, such as : Scattering coefficient, backscattering coefficient, forward scattering coefficient, scattering phase function and attenuation coef...
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IPC IPC(8): G01N21/49
Inventor 李彩柯天存曹文熙杨跃忠卢桂新郭超英
Owner SOUTH CHINA SEA INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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