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Remote crop growth status monitoring method based on crop model and assimilation technology

A technology of remote sensing monitoring and assimilation technology, applied in character and pattern recognition, image enhancement, instruments, etc., to achieve the effect of solving the problem of assimilation

Active Publication Date: 2017-04-26
INST OF AGRI ECONOMICS & INFORMATION HENAN ACADEMY OF AGRI SCI
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  • Application Information

AI Technical Summary

Problems solved by technology

However, under the combined effects of various factors such as high-dimensional space, multi-scale, nonlinear, non-Gaussian, complex uncertainty, and spatial correlation of state quantities, the shortcomings of existing data assimilation algorithms have become increasingly prominent. New data assimilation algorithms need to be proposed urgently, which is also the development direction of data assimilation algorithms

Method used

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  • Remote crop growth status monitoring method based on crop model and assimilation technology
  • Remote crop growth status monitoring method based on crop model and assimilation technology
  • Remote crop growth status monitoring method based on crop model and assimilation technology

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Embodiment Construction

[0041] Remote Sensing Image Preprocessing

[0042] (1) Content of preprocessing

[0043] Through radiometric correction (including radiometric calibration and atmospheric correction) to eliminate or weaken the systematic errors carried by satellite sensors, as well as the errors generated in the process of atmospheric radiation transmission. This step converts the original pixel value (DN value) of each band of the image into the surface reflectance or radiance that can quantitatively reflect the true attributes of the ground object, and is used to calculate the vegetation index required for various growth monitoring.

[0044] Geometric correction (including orthorectification and geometric registration) is used to eliminate geometric distortion and field position deviation of the image, and make it have the property of orthographic projection. In this step, the images of each band of the same multi-spectral image are completely superimposed, and the images of the same positi...

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Abstract

The invention relates to a remote crop growth status monitoring method based on a crop model and an assimilation technology, and belongs to a crop growth status monitoring and forecasting method. GF-1 satellite data serves as a main information source, general key technologies are applied, and growth statuses including NDVI, EVI and LAI are inversed under support of a basic product production sub-system of agricultural remote sensing; and the regional WOFOST crop growth model serves as the core, a remote-sensing growth status index or a crop output serves as an assimilation amount, an SCE-UA algorithm cost function is constructed, reversion assimilation for a growth status parameter aimed at GF-1 is formed, and thus, the crop growth status can be monitored and forecasted effectively.

Description

technical field [0001] The invention relates to a method for monitoring and forecasting crop growth, in particular to a remote sensing monitoring method for crop growth based on crop model and assimilation technology. Background technique [0002] Crop growth is a daily agricultural term. At present, there is no clear definition of crop growth at home and abroad, and there is no standardized algorithm. Literally understood, length refers to the growth and development of crops, and potential is interpreted as "the appearance" in the dictionary, and crop growth refers to the appearance of crop growth and development. Potential is also a philosophical concept in Chinese, and potential and shape are paired, expressing the trend determined by the specific structure and layout of things. It is appropriate for Yang Bangjie and others to define crop growth as "the status and trend of crop growth". Judging from experience, when agricultural technicians, agricultural managers, farme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q50/02G06F17/30G06K9/00G06K9/36G06T5/00G06T5/50G06T7/62
CPCG06F16/50G06Q50/02G06T5/50G06T2207/20221G06V20/188G06V10/247G06V10/20G06T5/92G06T5/80
Inventor 王来刚
Owner INST OF AGRI ECONOMICS & INFORMATION HENAN ACADEMY OF AGRI SCI
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