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CDL data-based American crop area remote sensing sampling estimating method

A crop and area technology, which is applied in the field of navigation and remote sensing, can solve the problems of inability to monitor the planting conditions in key foreign areas in time, and the lack of operational agricultural remote sensing monitoring technology methods.

Active Publication Date: 2015-01-14
ACADEMY OF PLANNING & DESIGNING OF THE MINIST OF AGRI
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Problems solved by technology

Due to the lack of support based on independent satellite data sources, our country has not yet established operational operational methods for agricultural remote sensing monitoring in key foreign areas, and cannot monitor the planting of major crops in key foreign areas in a timely manner.

Method used

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  • CDL data-based American crop area remote sensing sampling estimating method
  • CDL data-based American crop area remote sensing sampling estimating method
  • CDL data-based American crop area remote sensing sampling estimating method

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Embodiment Construction

[0010] The specific implementation manner is described below in conjunction with the accompanying drawings, figure 1 According to the technical roadmap of this patent, the implementation process is to determine the sampling survey target, construct a CDL-based sampling frame, design a stratified sampling method, obtain samples and interpret them, and estimate and verify the results.

[0011] 1. Determine the target of remote sensing sampling survey

[0012] The sample survey targets the winter wheat area within the contiguous United States.

[0013] 2. CDL-based sampling frame construction

[0014] figure 2 It is a schematic diagram of the sampling frame and selected samples in the United States, the total number of sampling units is N=4104, and the size is 40km×40km.

[0015] CDL data is the spatial distribution map of the full-coverage and full-species crops in the United States usually released by the U.S. Department of Agriculture in January every year. After a series ...

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Abstract

The invention belongs to the technical field of agricultural remote sensing and provides a CDL data-based American crop area remote sensing sampling estimating method. According to the method, the gross of the American crop area can be acquired and used for assisting in deciding and researching of related department. According to the technical scheme, taking winter wheat as an example, the method comprises the following steps: firstly, confirming a sampling investigating target as American winter wheat; secondly, referring to the space distribution of the winter wheat in the CDL of the last year and constructing a 40km*40km sampling frame; thirdly, performing layering random sampling design (taking an area scale as a layering mark, layering according to an accumulating frequency count histogram method and distributing samples according to a Neiman distribution method); fourthly, programming an ordered sample image and explaining; fifthly, estimating a result.

Description

【Technical field】 [0001] The invention relates to the field of navigation and remote sensing, and is a sampling estimation method. A sampling frame is established and a stratified sampling scheme is designed to monitor the area of ​​crops based on the CDL data of the United States in the previous year. 【Background technique】 [0002] In the process of global integration, the pressure to ensure national food security continues to increase. The situation of international agricultural trade is complex and severe. Global agricultural remote sensing monitoring is becoming more and more important. The United States and the European Union are in the leading position in global agricultural remote sensing monitoring. Based on the research and application of data sources, the global agricultural remote sensing monitoring has been realized and huge economic benefits have been achieved. Only USDA-FAS is responsible for the remote sensing area estimation and production estimation of fore...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 王飞申克建裴志远吴全孙冠楠张晓倩
Owner ACADEMY OF PLANNING & DESIGNING OF THE MINIST OF AGRI
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