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Method and system for monitoring crop growth

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: 2017-08-04
INST OF REMOTE SENSING & DIGITAL EARTH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Method and system for monitoring crop growth

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Experimental program
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Embodiment 1

[0060] Such as figure 1 As shown, a flow chart of a method for monitoring crop growth provided by Embodiment 1 of the present invention includes the following steps:

[0061] Step S1, obtaining the growth period of the crops in the monitoring area, the growth period is the time interval from the beginning of crop growth to the maturity of the crops.

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

[0063] Step S3, taking the growth period as the time range, performing maximum value synthesis on the vegetation index data of the current year to obtain the maximum value of the vegetation index of each pixel in the growth period of the current year, that is, the peak period of crop growth in the growth period The vegetation index; the maximum and minimum values ​​of the histor...

Embodiment 2

[0082] Such as figure 2 As shown, it is a functional block diagram of a monitoring system for arable crop growth 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 of the current year and historical remote sensing data located in the monitoring area and the time range is the crop growth period, and preprocess the remote sensing data to obtain the vegetation index data of each pixel in the monitoring area . Specific as image 3 as shown, image 3 It is the functional block diagram of data module 1. The data module 1 includes a growth period determination unit 11 , a data acquisition unit 12 , a data processing unit 13 and a data storage unit 14 . Wherein, the growth period determination unit 11 sends a data request to the data acquisition unit 12 according to the given crop type, ...

Embodiment 3

[0099] Such as Figure 5 As shown, it is a functional block diagram of a crop growth monitoring system provided by Embodiment 3 of the present invention. In this embodiment, in addition to the data module 1a, extremum synthesis module 2a, calculation module 3a and evaluation module 4a similar to those in Embodiment 2, it also includes a parameter configuration module 5a and a data output module. The data output module mentioned above is the display module 6a. Wherein, the function and structure of the data module 1a, the extremum 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 the user with an interface for data input, which is used to configure the parameters required by the system, such as the value of the historical year N, the selection of the monitoring area, and the average value NDVI for calcula...

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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, in particular to a crop growth monitoring method and system. Background technique [0002] Food security is an important issue facing the world today. Countries need to obtain crop growth data as early as possible in order to obtain accurate data support when formulating grain import and export plans and analyzing grain futures trade. The crop growth situation data during the growth period is often more reflective of the crop area and total output than the data after the crops are mature and harvested, and provides a data basis for macro-control analysis of possible large-scale food shortages or surpluses. [0003] Currently, the systems used to monitor crop growth are based on remote sensing data. Among them, the National Aeronautics and Space Administration (NASA) launched a comprehensive project called the Earth Science Enterprise (ESE) in 1...

Claims

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Application Information

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Patent Type & Authority Applications(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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