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Crop growth monitoring method and system

A monitoring system and crop technology, which is applied in the field of crop growth monitoring methods and systems, can solve problems such as deviations in crop growth monitoring results, and achieve the effect of weakening the impact

Active Publication Date: 2020-09-29
INST OF REMOTE SENSING & DIGITAL EARTH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies in the prior art, the present invention provides a crop growth monitoring method and system, which solves the problem in the prior art that the crop growth monitoring results are deviated due to the interannual variation of crop phenology

Method used

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  • Crop growth monitoring method and system
  • Crop growth monitoring method and system

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Experimental program
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Embodiment 1

[0060] Such as figure 1 As shown, it is a flow chart of a method for monitoring crop growth according to Embodiment 1 of the present invention, which includes the following steps:

[0061] Step S1: Obtain the growth period of the crop in the monitoring area, where the growth period is the time interval from the start of the growth of the crop to the maturity of the crop.

[0062] Step S2: Obtain remote sensing data and historical remote sensing data of the current year whose time range is the growth period, and preprocess the remote sensing data to obtain vegetation index data of each pixel in the monitoring area.

[0063] Step S3: Taking the growth period as the time range, perform maximum value synthesis on the vegetation index data of the current year to obtain the maximum value of the vegetation index of each pixel during the growth period of the current year, that is, the peak period of crop growth during the growth period Vegetation index: The maximum and minimum values ​​of h...

Embodiment 2

[0082] Such as figure 2 Shown is a functional block diagram of a monitoring system for crop growth of cultivated land provided by the present invention, which specifically includes: a data module 1, an extreme value synthesis module 2, a calculation module 3, and an evaluation module 4.

[0083] Wherein, the data module 1 is used to provide remote sensing data and historical remote sensing data of the current year located in the monitoring area and the time range of the crop growth period, and preprocessing the remote sensing data to obtain vegetation index data of each pixel in the monitoring area . Specific as image 3 As shown, image 3 It is the principle block diagram of data module 1. The data module 1 includes a growth period determining unit 11, a data acquisition unit 12, a data processing unit 13 and a data storage unit 14. Wherein, the growth period determining unit 11 sends a data request to the data acquisition unit 12 according to a given crop type, and the data a...

Embodiment 3

[0099] Such as Figure 5 As shown, it is a functional block diagram of a system for monitoring crop growth according to Embodiment 3 of the present invention. In this embodiment, in addition to the data module 1a, extreme value synthesis module 2a, calculation module 3a, and evaluation module 4a similar to those in the second embodiment, it also includes a parameter configuration module 5a and a data output module. The data output module described is the display module 6a. Wherein, the functions and structures of the data module 1a, the extreme value synthesis module 2a, the calculation module 3a, and the evaluation module 4a are similar to those of the second embodiment, so the description will not be repeated here.

[0100] The parameter configuration module 5a provides a data input interface for the user to configure the parameters required by the system, such as the value of N in historical years, the selection of monitoring areas, and the average value NDVI used to calculate...

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Abstract

The invention discloses a method and a system for monitoring crop growth, which relates to the technical field of agricultural monitoring. The method comprises the following steps that a growth period of crops in a monitoring area is obtained; remote sensing data of the current year and historical remote sensing data in the time range of the growth period is obtained and pretreated to obtain vegetation index data of each pixel of the monitoring area; maximum and minimum values synthesis is carried out in the time range of the growth period to obtain the maximum value of the vegetation index in the growth period of the current year and the maximum and the minimum values of the vegetation index in the growth period of the historical year; the optimal vegetation index in the growth period of the monitoring area is obtained by calculation, and the situation of the current crop growth is determined according to the value and the level threshold range of the optimal vegetation index. The influence of unfavorable weather conditions on the vegetation index during the growth period of the crop is effectively reduced and the effect of the phenological migration on the monitoring result of the crop growth is overcome.

Description

Technical field [0001] The invention relates to the technical field of remote sensing image processing and agricultural monitoring, and particularly relates to a method and system for monitoring crop growth. Background technique [0002] Food security is an important issue facing the world today. When formulating food import and export plans and analyzing food futures trade, countries need to obtain crop growth data as soon as possible in order to obtain accurate data support. The crop growth situation data during the growth period often reflects the crop area and total output better than the data after the crop is harvested, and provides the data basis for macro-control analysis on the possible large-scale food shortage or surplus. [0003] At present, the systems for monitoring crop growth are based on remote sensing data. Among them, the National Aeronautics and Space Administration (NASA) initiated a comprehensive project called the Earth Science Enterprise (ESE) in 1991. In t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/25G01S17/89
CPCG01N21/25G01S17/89
Inventor 张淼吴炳方曾红伟张鑫李名勇郑阳
Owner INST OF REMOTE SENSING & DIGITAL EARTH CHINESE ACADEMY OF SCI
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