Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Drought monitoring method based on HJ-1A/1B CCD data

A HJ-1A, data technology, applied in the direction of measuring devices, material analysis through optical means, instruments, etc., can solve the problems that it is difficult to take accurate and effective drought prevention measures, the sensitivity is different, etc., and the drought monitoring method is simple Fast, optimally configured results

Inactive Publication Date: 2013-12-04
SOUTH CHINA AGRI UNIV
View PDF6 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, different growth stages of crops have different sensitivity to water stress. Under the same soil moisture conditions, crops at different growth stages show different drought conditions. Therefore, it is difficult to monitor drought only by relying on HJ-1A / 1B CCD data. It is difficult to take relatively accurate and effective measures against drought

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Drought monitoring method based on HJ-1A/1B CCD data
  • Drought monitoring method based on HJ-1A/1B CCD data
  • Drought monitoring method based on HJ-1A/1B CCD data

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0046] like figure 1 As shown, this embodiment discloses a drought monitoring method based on HJ-1A / 1B CCD data, so as to realize the optimal allocation of agricultural water resources and drought warning within the monitoring area, which specifically includes the following steps:

[0047] (1) Obtain the crop planting distribution information in the monitoring area, and the crop planting distribution information refers to the spatial distribution of crops; in this embodiment, the monitoring area is Leizhou Peninsula, Guangdong Province, and the crop is sugarcane, and the method for obtaining the crop planting distribution information is as follows:

[0048] (1-1) Select a pure sugarcane crop planting area, use handheld GPS to determine the boundary of the selected area, vectorize the boundary data, and use it as a training sample area.

[0049] (1-2) Using geographic information data, according to the boundaries of administrative regions, the administrative regions without cro...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a drought monitoring method. The drought monitoring method comprises the steps that (1) crop cultivation distribution information in a monitored area is obtained; (2) an MPDI mathematic model is built based on HJ-1A / 1B CCD data, a mathematic model between MPDI and soil water content is built, and MPDI data threshold values, at all degrees of drought, of crops are determined according to soil water threshold values, at all degrees of drought, of the crops; (3) a growth model of the crops is introduced, assimilation is conducted on the growth model of the crops and the HJ-1A / 1B CCD data, and the period of duration of the crops is determined; (4) according to the period of duration of the crops in the monitored area, the MPDI data of the crops in the period of duration of the crops and the MPDI data threshold values, at all degrees of drought, of the crops, the drought degree of the crops in the monitored area is obtained, and the drought situation of the crops in the period of duration is judged according to the level of sensitivity of the crops to water in the period of duration. Corresponding drought control measures can be accurately and accordingly adopted according to the drought situation of the crops in the period of duration.

Description

technical field [0001] The invention relates to an agricultural drought monitoring method, in particular to a drought monitoring method based on HJ-1A / 1B CCD data. Background technique [0002] The occurrence process of drought is latent and not easy to find. Moreover, in recent years, drought has shown the characteristics of wide range, high frequency, and long duration. The occurrence of farmland drought is characterized by a large scope of influence, which brings serious catastrophic effects. Consequences and economic losses; study and evaluate the process of occurrence and development of drought, and take corresponding measures to combat drought, prevent disasters and reduce losses from agricultural disasters. [0003] Remote sensing, with its dynamic, real-time, macro, and inexpensive advantages, makes it possible to monitor and evaluate large-scale drought conditions, and has become an important development direction in the field of drought monitoring. Remote sensing ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01N21/84
Inventor 李就好陈海波余长洪张连宽姜俊红陈凯刘德灿
Owner SOUTH CHINA AGRI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com