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Soil moisture hybrid remote sensing retrieval method and system

A soil moisture and remote sensing inversion technology, applied in the field of microwave remote sensing, can solve the problems of difficult parameter determination, difficult parameterization, low reliability, etc., and achieves the effect of broad application area and application prospect, clear physical basis, and less input parameters.

Active Publication Date: 2017-11-24
SATELLITE ENVIRONMENT CENT MINIST OF ENVIRONMENTAL PROTECTION
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Problems solved by technology

[0004] In the existing soil moisture remote sensing inversion methods, it is necessary to determine the parameters of the dry side, wet side and soil line of the surface temperature triangle. limits the operability of these methods in practical applications

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  • Soil moisture hybrid remote sensing retrieval method and system
  • Soil moisture hybrid remote sensing retrieval method and system

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Embodiment Construction

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are the Some, but not all, embodiments are invented. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0023] figure 1 The flow chart of the soil moisture mixed remote sensing inversion method provided by the embodiment of the present invention, such as figure 1 As shown, the method includes:

[0024] Step 11. Obtain the first remote sensing image data and the first meteorological data of the surface type area required for the estimated area; wherein, the first remote ...

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Abstract

The embodiment of the invention provides a soil moisture hybrid remote sensing retrieval method and system. The soil moisture hybrid remote sensing retrieval method comprises the following steps: acquiring first remote sensing image data and first meteorological data of a required earth surface type area of an estimation area, wherein the first remote sensing image data comprise a first visible light band reflectivity, a first near-infrared band reflectivity and a first short-wave infrared band reflectivity, and the first meteorological data comprise a first relative humidity and a first air humidity; calculating a first ratio vegetation index and a first land surface water index of the estimation area; and calculating a first soil moisture of the estimation area according to the first ratio vegetation index, the first land surface water index, the first meteorological data and a soil moisture hybrid remote sensing retrieval model. The soil moisture hybrid remote sensing retrieval method and system provided by the embodiment of the invention require less input parameters, are simple and flexible, are easy to operate, and has a wide application face and a broad application prospect.

Description

technical field [0001] Embodiments of the present invention relate to the field of microwave remote sensing technology, and in particular to a method and system for soil moisture mixed remote sensing inversion. Background technique [0002] Soil moisture is different types of water formed by various forces such as gravity, capillary attraction, water molecule attraction, and soil particle surface molecular attraction in the soil. Soil moisture is the most important characterization parameter of surface drought information and an important basis for agricultural production and water resources management. Remote sensing technology can provide multi-source, multi-dimensional and multi-temporal information of the surface, which opens up a new way for surface soil moisture retrieval. [0003] The traditional surface soil moisture acquisition is carried out with the data on the observation point, and the most widely used methods are soil drilling, soil weighing and neutron meter ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/24
Inventor 王桥赵少华姚云军刘思含毛学军吴艳婷
Owner SATELLITE ENVIRONMENT CENT MINIST OF ENVIRONMENTAL PROTECTION
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