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Semi-analytical method for realizing inversion of water body chlorophyll alpha concentration

A chlorophyll, semi-analytical technology, applied in the field of water color remote sensing theory and application technology research, can solve the problem of less applied research

Inactive Publication Date: 2011-09-21
QINGDAO INST OF MARINE GEOLOGY
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Problems solved by technology

In previous studies, the hyperspectral-based chlorophyll-a concentration inversion theory mainly focused on the design of the "narrow-band" inversion model, but there are relatively few applications of the "narrow-band" model combined with hyperspectral remote sensing images

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  • Semi-analytical method for realizing inversion of water body chlorophyll alpha concentration
  • Semi-analytical method for realizing inversion of water body chlorophyll alpha concentration
  • Semi-analytical method for realizing inversion of water body chlorophyll alpha concentration

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Embodiment Construction

[0032] In order to better illustrate a semi-analytical method for realizing the inversion of water body chlorophyll a concentration involved in the present invention, this research uses the chlorophyll a measured by water quality experiments on October 27, 28, 2003 and August 19, 2004. Based on the concentration data, spectral reflectance data, and the Hyperion hyperspectral image data synchronized with the water quality experiment on August 19, 2004, the semi-analytic algorithm of this study was analyzed and verified.

[0033] The specific implementation steps are as follows:

[0034] (1) Read in the chlorophyll a concentration data and spectral reflectance data measured by the water quality experiment on October 27, 28, 2003 and August 19, 2004, and the Hyperion data synchronized with the water quality experiment on August 19, 2004. Hyperspectral image data, in which the spectral curve corresponding to the water quality experiment on August 19, 2004 is directly extracted fro...

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Abstract

The invention relates to a semi-analytical method for realizing inversion of water body chlorophyll alpha concentration, which comprises the steps of: (1) reading the data of chlorophyll alpha, water body spectroscopic data and high-spectrum remote sensing data; (2) utilizing the optical characteristics of the water body containing the chlorophyll alpha to establish semi-analytical model of the chlorophyll alpha concentration; (3) on the basis of the data in the step (1), adopting a method of enumerating by band and linear iteration, and calculating the best wave band and model parameter of the semi-analytical algorithm; and (4) on the basis of the steps (1) and (3), extracting the space distribution information of the chlorophyll alpha concentration from high-spectrum remote sensing image.

Description

technical field [0001] The invention relates to a semi-analytical method for realizing inversion of chlorophyll-a concentration in a water body, and belongs to the research field of water color remote sensing theory and application technology. Background technique [0002] Water is the source of life and an indispensable basic substance of the earth's biosphere. Water quality is directly related to the survival and development of human daily life and the natural environment. However, with the development of economy and society, the problem of water pollution is becoming more and more serious, and the task of water quality monitoring and management is becoming increasingly difficult. The core content of water quality monitoring is to monitor, analyze and evaluate the quality of water resources and their changes over time, so as to provide scientific basis for the country and governments at all levels to rationally develop, utilize, manage and protect water resources. Theref...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/25
Inventor 王保军陈军温珍河
Owner QINGDAO INST OF MARINE GEOLOGY
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