Remote sensing monitoring method of crop growth based on crop model and assimilation technology

An assimilation technology, remote sensing monitoring technology, used in character and pattern recognition, image enhancement, instrumentation, etc.

Active Publication Date: 2021-04-23
INST OF AGRI ECONOMICS & INFORMATION HENAN ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • 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 sensing monitoring method of crop growth based on crop model and assimilation technology
  • Remote sensing monitoring method of crop growth based on crop model and assimilation technology
  • Remote sensing monitoring method of crop growth based on crop model and assimilation technology

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Experimental program
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Embodiment Construction

[0042] Remote Sensing Image Preprocessing

[0043] (1) Content of preprocessing

[0044] Radiation correction (including radiometric calibration and atmospheric correction) is used 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.

[0045] Through geometric correction (including orthorectification and geometric registration) to eliminate the geometric distortion and 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 position o...

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Abstract

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, using GF‑1 satellite data as the main information source, applying common key technologies, and basic agricultural remote sensing products With the support of the production subsystem, the inversion of growth indicators such as NDVI, EVI and LAI is carried out; with the regionalized WOFOST crop growth model as the core, and the remote sensing growth indicators or crop yield as the assimilation quantity, the cost function of the SCE-UA algorithm is constructed to form The inversion and assimilation of the growth parameters of GF-1 can effectively monitor and forecast the growth of crops.

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 Patents(China)
IPC IPC(8): G06Q50/02G06F16/50G06K9/00G06K9/36G06T5/00G06T5/50G06T7/62
CPCG06F16/50G06Q50/02G06T5/006G06T5/009G06T5/50G06T2207/20221G06V20/188G06V10/247G06V10/20
Inventor 王来刚郑国清郭燕贺佳程永政刘婷杨春英张彦杨秀忠张红利
Owner INST OF AGRI ECONOMICS & INFORMATION HENAN ACADEMY OF AGRI SCI
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