Movement-based data-distributed cooperative service system

Abstract

The invention discloses a movement-based data-distributed cooperative service system. The movement-based data-distributed cooperative service system comprises a metadata automatic extracting module, adata grid node module, a data conversion operation module, a network safety control module, a data service automatic releasing module and a distributed data query engine, wherein the metadata automatic extracting module is used for extracting metadata of remote sensing data in each data center to build a metadata library; the data grid node module is used for interacting with the metadata library; the data conversion operation module is used for converting input and output parameters of a data source of a mobile service and a data source of a non-mobile service and an interoperation protocol;the network safety control module is used for setting and managing user permission according to a preset safety strategy, and performing safety control management on a data request initiated by a user; the data service automatic releasing module is used for providing a mobile service interface and a non-mobile service interface externally; and the distributed data query engine is used for realizing distributed query of a distributed heterogeneous data source. Through adoption of the movement-based light data-distributed cooperative service system disclosed by the invention, a data network system is simpler, efficient, and easy to extend and maintain.

Description

technical field [0001] The invention relates to a data distributed system service technology, in particular to a mobile-based lightweight data distributed collaborative service system. Background technique [0002] 1. Spatial data grid system based on Web Service: [0003] Web Service technology enables different applications running on different machines to exchange data or integrate without additional, specialized third-party software or hardware. Applications implemented according to the Web Service specification can exchange data with each other regardless of the language, platform or internal protocol they use. Web Service is a self-describing and self-contained available network module that can perform specific business functions. Web Services are also easy to deploy, because they are based on some conventional industry standards and some existing technologies, such as subset XML and HTTP under the standard common markup language. Web Service reduces the cost of app...

AI Technical Summary

Problems solved by technology

[0020] 1) Standards are not uniform: the data sharing platform has its own set of data description standards and data release sharing protocols for the data grid system. These standards and protocols are severely coupled with their own systems, making it difficult to directly transplant them to other data service systems

This makes it difficult to realize the system of systems (system of systems), making each data sharing platform an island of data;

[0021] 2) The coupling of communication protocols is too high: Even if the data grid system of OGC (Open GIS Consortium) is adopted at present, the data exchange protocol and data interoperability protocol used are seriously coupled to the system. When a data unit with a service system wants to join the grid system, the integration cycle is often longer, the efficiency is low, and it is difficult to guarantee the independence and autonomy of the data unit

[0022] 3) The communication protocol is too complicated: when an emergency needs to quickly build a spatial data grid and realize heterogeneous spatial data sharing to provide decision support, the efficiency of the existing data sharing technology to build a spatial data sharing platform is too low. Lack of system automation and rapid construction technology, it is difficult to realize rapid information sharing in emergencies of heterogeneous data sources

[0023] 4) Lack of reliable security mechanism: When a data sharing system is connected to the grid, its own security mechanism is easily destroyed

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