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Remote sensing quantitative reversion method and system of crop physical and chemical parameters

A physical and chemical parameter and remote sensing technology, applied in the direction of color/spectral characteristic measurement, etc., can solve the problems of long time required, inability to meet the rapid quantitative inversion of physical and chemical parameters, and high computational complexity

Active Publication Date: 2016-07-06
INST OF REMOTE SENSING & DIGITAL EARTH CHINESE ACADEMY OF SCI
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Problems solved by technology

The full traversal search method can find the global optimal solution, but this method has high computational complexity and takes a long time, so it cannot meet the needs of timely and rapid quantitative inversion of physical and chemical parameters, and is subject to great limitations in practical applications

Method used

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  • Remote sensing quantitative reversion method and system of crop physical and chemical parameters
  • Remote sensing quantitative reversion method and system of crop physical and chemical parameters
  • Remote sensing quantitative reversion method and system of crop physical and chemical parameters

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Embodiment Construction

[0049] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0050] In order to meet the application needs of precision agricultural growth monitoring, quality estimation, yield forecasting, pest forecasting, etc., provide data support and theoretical method guidance for the formulation and implementation of crop field management strategies, and build a high-precision, fast and universal crop physicochemical The remote sensing quantitative inversion method of parameters is necessary.

[0051] In the field of quantitativ...

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Abstract

The invention discloses a remote sensing quantitative reversion method and system of crop physical and chemical parameters.According to the method, LUTs is segmented into LUTsi of the same number according to the spectral band number, all the LUTsi are ranked to obtain LUTsi_sort, for each LUTsi_sort, a bisection method searching method is utilized for searching for simulating vegetation canopy reflectivity data with similarity to real vegetation canopy reflectivity data meeting the preset requirement, all the simulating vegetation canopy reflectivity data and content of corresponding items of the data in the LUTs are used for constructing a form in a corresponding relation form to obtain LUTs_new, each simulating vegetation canopy reflectivity data and TD of the real vegetation canopy reflectivity data corresponding to the simulating vegetation canopy reflectivity data in the LUTs_new are calculated, and crop physical and chemical parameter data corresponding to the minimum value in the TD serves as the optimal solution of the lookup table algorithm.According to the method and the system, the size and the direction character of the vegetation canopy reflectivity data are considered comprehensively, and the calculation complexity is reduced while the crop physical and chemical parameter inversion numerical precision is improved.

Description

technical field [0001] The invention relates to the technical field of physical and chemical parameters, and more specifically, to a remote sensing quantitative inversion method and system for physical and chemical parameters. Background technique [0002] Physicochemical parameters are key indicators to characterize crop morphological structure and physiological activity, including crop physiological parameters (such as population density, plant height, leaf area index, etc.) and crop biochemical parameters (such as chlorophyll content, nitrogen content, carotenoid content, etc.) content, etc.), as physical and chemical parameters in the field of precision agriculture, it has extensive and important theoretical research significance and practical application value in terms of crop growth monitoring, quality estimation, yield prediction, disease and insect pest forecasting, and crop field management strategy formulation and implementation. [0003] At present, remote sensing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/25
CPCG01N21/25
Inventor 董莹莹黄文江王纪华杨小冬
Owner INST OF REMOTE SENSING & DIGITAL EARTH CHINESE ACADEMY OF SCI
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