Method for evaluating remote sensing inversion accuracy of chlorophyll a in water body

A technology of remote sensing inversion and accuracy evaluation, which is applied in the direction of color/spectral characteristic measurement, etc. It can solve the problems of comprehensive accuracy information, inaccurate accuracy information in local areas, etc., and achieve detailed accuracy information, improve utilization rate, and practicability strong effect
CN101852722AInactive Publication Date: 2010-10-06BEIHANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
BEIHANG UNIV
Publication Date
2010-10-06
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for evaluating the remote sensing inversion accuracy of chlorophyll a in a water body, which comprises the following steps of: (1) reading in chlorophyll a concentration data, water surface spectral data and a hyperspectral remote sensing image; (2) searching a regression model of the optimal parameter and chlorophyll a concentration; (3) calculating the difference between a model predicted value and a measured value by taking measured concentration as a true concentration value of a pixel, and taking the difference as an inversion error of a four-band remote sensing inversion model; (4) constructing two band models near a concentration node section based on the uncertainty principle by taking the calculated result in the step (3) as the inversion error; and (5) calculating the relative error and absolute error of the chlorophyll a concentration inversion result by using the band models.
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Description

technical field

[0001] The invention relates to a method for realizing the accuracy evaluation of water body chlorophyll a remote sensing inversion, belongs to the technical field of ocean water color remote sensing and inland water environment remote sensing, and is suitable for theoretical method and application technology research of quantitative remote sensing. Background technique

[0002] At present, the inland and offshore waters are seriously polluted and face the threat of eutrophication. The use of remote sensing technology can monitor water quality status and changing trends in a timely, rapid and large-scale synchronously, which is of great significance for water resources management and water environmental protection.

[0003] The problem of accuracy evaluation and accuracy expression of water color remote sensing products is the hot and difficult point of current water color remote sensing research. In the process of traditional water color remote sensing theo...

Claims

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