Comparative Study Between Bidirectional Chlorophyll In Water And Features Of Polarized Spectrum

The abusive propagation of alga matter is one important characteristics of water over-nutrition, while chlorophyll occupies a stable ratio in alga matter which is easy to measure, and the thickness of chlorophyll is an important parameter in reflecting the extent of water over-nutrition. Studying the thickness of chlorophyll in water has an important theoretical significance and broad applicable perspective to the monitoring water resources and environment protection.As a regional water environmental survey and monitoring instruments, remote sensing technology has received increasing attention. North America and some European countries had already begun the use of aerospace remote sensing data to monitor lakes distribution of chlorophyll. The remote sensing technology can obtain large concentrations of chlorophyll waters rapidly. The result is that it can obtain instantaneous synchronization and short duplicated data cycle. It can monitor the distribution of chlorophyll concentration and dynamic changes effectively to overcome the laborious and time-consuming drawbacks of conventional operation. It shows great value for research. Conventional use of remote sensing information focused on the strength of the electromagnetic wave and geometric characteristics. Polarization information can be used completely as the more valuable sources of information of remote sensing form another dimension. Since 1970s, scientists from all countries have done a lot of research on polarization characteristics of all kind of objects and have achieved some results. In recent years, some Chinese scholars use polarized light remote sensing to study the surface features. However, the study of sexual water chlorophyll and characteristics of reflectance spectra are almost blank Thus this study is of great significance.The main task of this work is to use two bidirectional reflectance measurement devices, by the CAS-Changchun Research Institute of Precision Machinery, to study the multi-angle reflectance spectroscopy, polarization spectroscopy of water specular reflection. This paper aims to measure and analyze different chlorophyll concentration in a body of water 2Ï€space on the reflectance spectra and polarized reflectance spectral data completely. It also compares its characteristics. Chapter fourth analyzes spectral data on the basis of focus from the angle detection angle, azimuth, band and polarization. It mainly aims to analyze angle different aspects of the chlorophyll concentration polarization spectrum, summarize regularity. It also establishes a water chlorophyll polarized reflectance spectrum model, and analyzes it through a simple model. These provide important reference to the study of chlorophyll concentration polarization in the future.