Remote sensing monitoring method of regional surface water resources based on small satellites
A water resource and satellite technology, applied in the field of remote sensing applications, can solve the problems of low precision, inconsistent monitoring principles of hydrological elements, poor comparability, etc., and achieve the effect of ensuring accuracy
Active Publication Date: 2014-10-22
TWENTY FIRST CENTURY AEROSPACE TECH CO LTD
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Problems solved by technology
[0004] 1) The currently used remote sensing data mainly comes from foreign satellite data, and its high ground resolution and high time resolution are difficult to have at the same time, resulting in slow update of monitoring results or low accuracy
[0005] 2) The current research on surface water resources mostly stays in small-scale administrative regions, and often focuses on one or several discrete time points, without continuous monitoring, which is inconsistent with the monitoring principles of hydrological elements. The monitoring results Insufficient reference value and poor comparability
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[0050] Taking Beijing No. 1 small satellite as an example for remote sensing monitoring of surface water resources in Beijing and five surrounding river basins, the present invention will be further described in detail in conjunction with the accompanying drawings.
[0051] figure 1 It is a flow chart of the remote sensing monitoring method for regional surface water resources based on small satellites, including the following steps:
[0052] Step 1: Determine the monitoring phase and monitoring area, collect and select small satellite images and auxiliary data
[0053] The distribution of surface water resources is affected by hydrological factors such as precipitation, runoff, and evaporation, and presents the characteristics of dryness or abundance. During the dry period, the surface water in the basin is the least, and it mainly relies on groundwater for water supply; during the wet period, the surface water in the basin is abundant. It mainly relies on rainfall or snowmelt...
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The invention belongs to the technical field of remote sensing applications, and discloses a remote sensing monitoring method for regional surface water resources based on small satellites, comprising the following steps: 1) determining the monitoring phase and monitoring area, collecting and selecting small satellite images and auxiliary data; 2) Small satellite multispectral image orthorectification; 3) Small satellite multispectral image radiation normalization; 4) Surface water resources information extraction. According to the imaging characteristics of small satellites, such as high resolution, wide coverage, and high time resolution, the present invention forms a set of efficient regional surface water resource remote sensing monitoring methods suitable for small satellites, making up for the current surface water resource remote sensing monitoring methods in large areas. The lack of application can more accurately reflect the spatial distribution pattern and evolution characteristics of regional surface water resources, and realize the remote sensing monitoring of surface water resources in high-resolution remote sensing images in multi-temporal regions for many years, ensuring the accuracy and continuity of the results and comparability.
Description
technical field [0001] The invention belongs to the technical field of remote sensing applications, and relates to a method for highly dynamic monitoring of regional surface water resources based on medium and high resolution remote sensing data. Background technique [0002] Water is an essential resource to maintain all life in nature and the sustainable development of social economy. The shortage of water resources and the deterioration of the ecological environment are serious problems facing the world today. Especially in our country, the shortage of water resources has seriously affected the national economic development and social harmony. [0003] As an important part of water resources, surface water can reflect the status of water resources from a specific perspective. Remote sensing technology has the characteristics of macroscopic, scientific, rapid, and large-scale, and has become a necessary technology for macroscopic monitoring of surface water resources. Wh...
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Inventor 吴双周会珍王智勇冉琼于冰洋文强
Owner TWENTY FIRST CENTURY AEROSPACE TECH CO LTD