A Method for Measuring Scattered Light Polarization Data in Large Angle Range

Abstract

The invention relates to a method for measuring the polarization state data of scattered light in a large angle range, and belongs to the technical field of suspended particle detection in water bodies. By including 8 method steps, the simultaneous detection of the same suspended particle is realized without assuming that the sample is uniform, and the unique polarization state data of a single suspended particle is measured. The detection effect is good, and the operation method is simple and convenient. It is suitable for water quality detection, In the field of water bloom early warning, it has a wide range of applications. By increasing the optical power output of the light source S, or by improving the focusing performance of the light converged by the mirror column L4, the signal-to-noise ratio of the measurement is effectively improved. It solves the problem that the existing detection method of rotating a single detector cannot simultaneously detect the same suspended particle, and the detection method of multiple discrete angle detection systems increases the complexity of the detection system, and there are differences in the scattering volumes of discrete angles , it is difficult to measure the same particle, which is not conducive to the application of water quality detection and algal bloom warning.

Description

technical field [0001] The invention relates to a method for measuring the polarization state data of scattered light in a large angle range, and belongs to the technical field of suspended particle detection in water bodies. Background technique [0002] Detecting suspended particulate matter in water is an important basis for water ecological protection, environmental monitoring, and water resource development. There are many types of particulate matter in water bodies, with large differences in shape and size, and the position and state of suspended and moving particulate matter are instantaneous. Therefore, identifying them requires a large amount of measurement information, and more importantly, simultaneous measurement. [0003] At present, the methods for detecting particulate matter in water bodies include optical and acoustic methods. Optical methods have attracted people's attention because of their high resolution, non-destructive, and non-contact characteristics....

AI Technical Summary

Problems solved by technology

There are also some methods to simultaneously measure the polarization state of scattered light in a large angle range through multiple discrete angle detection systems. Although the detection effect is better than the former, it increases the complexity of the system, and the scattering volumes of discrete angles are different. Measure on the same particle

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