Management And Visualization Of Remote Sensing Big Data Information Based On WebGIS

After more than half a century’s development,the application of remote sensing technology in many fields has entered a new stage.It can not only passive features reflection of natural light,you can also receive the launch of the long wave infrared radiation features,and able to take advantage of synthetic aperture radar and laser radar active electromagnetic launch,realize the all-weather earth observation.In the 21 st century,remote sensing technology has shown new features of high spatial resolution,high spectral resolution and high temporal resolution,and has opened up more new applications.Remote sensing data as the era of big data in the field of remote sensing and earth observation data latest product,multi-resolution,multiple data sources,space-time spectrum of remote sensing images,remote sensing data have obvious characteristics of big data.In this paper,the high image products,land use classification and analysis of field distribution data,and so on in setting data display and implicit information visualization expression,based on the WebGIS technology applied to the remote sensing analysis of big data management work,realize the big data management and display information.(1)This article studies the WebGIS technology,compares and analyzes several WebGIS application softwares,and combines the characteristics of the dataset products,selects QGIS,GeoServer,Openlayers,and PostgreSQL as the data management platform framework structure;and studies the WebGIS tile caching technology.Explain the production principle of slice data and the content of TMS tile pyramid model specification.(2)Analyze the data type and data content of the data set.Combine the characteristics of the data structure,divide the data display solution into three modules: management and display of remote sensing data,graphical representation of statistical data,and visualization of multivariate data-related information.expression.After completing the design of the data display program,the data is processed to obtain the characteristic information.The GIS spatial analysis method is used to complete the data statistics work.Based on the data mining theory,the multi-big data information is correlated and the underlying data is hidden.In-depth information,production of thematic maps,complete the visual expression of data information.(3)Complete the system specification and database design,and divide the system into map basic function modules,multi-source map browsing modules,geospatial analysis modules,remote sensing data display modules,statistical information display modules,and multi-information related modules,and on the WebStorm platform Completed the development of remote sensing big data information management and visualization analysis system,and realized functions such as data storage management,data service publishing,vector layer drawing,spatial information query,and statistical information related information exhibition.