Access protocol transfer method and system for multi-source heterogeneous remote sensing data system

Abstract

The invention discloses access protocol transfer method and system for a multi-source heterogeneous remote sensing data system and belongs to the technical field of intelligent city geographic information services. By establishing a sensor observation service middleware, the sensor observation service middleware can be connected with the remote sensing data system and access metadata information of the remote sensing data system in real time, can provide space-time range satisfying with customization and data of the remote sensing data system corresponding to special subjects for users, carry metadata information of the data system and feeds and displays to client sides in a regular coding formats. By the established sensor observation service middleware, difference of access interfaces of the multi-source heterogeneous remote sensing data system is eliminated, problems caused by protocols of the remote sensing data system are avoided, and protocols of data discovery of the multi-source heterogeneous remote sensing data system is normalized into external access protocols complied with sensor observation service standards.

Description

[0001] technical field [0002] The invention belongs to the technical field of geographic information services for smart cities, and in particular relates to an access protocol conversion method and system for supporting multi-source heterogeneous remote sensing data systems based on network service middleware. Background technique [0003] With the continuous development of earth observation technology, the amount of data archived in the data exchange center is also increasing. The Earth Observation Data System and Information Center (ECHO) data system of the National Aeronautics and Space Administration (NASA) provides an interface for MODIS data acquisition and discovery, and users can order MODIS data through the ECHO data system; the US Geological Survey (USGS) provides LANDSAT ETM+ data acquisition and discovery interface; NOAA CLASS data system provides NOAA AVHRR data acquisition and discovery interface; Brazilian Space Agency (INPE) provides CBERS2 satellite data a...

AI Technical Summary

Problems solved by technology

The external data discovery interfaces of multi-source and heterogeneous data systems are very different, so it is very difficult to provide users with a standardized way to access heterogeneous data systems

[0011] (2) Different metadata models bring difficulties to users in describing metadata information

Different metadata models make it difficult for users to achieve unified and standardized queries

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