Distributed remotely-sensed data managing system and method

Abstract

The invention provides a distributed remotely-sensed data managing system, a distributed remotely-sensed data managing method and an inquiry method for the distributed remotely-sensed data managing system. The distributed remotely-sensed data managing system comprises servers ranging from a first level to an N level, wherein N is more than 1; each level is provided with one or more servers; each server in the first level comprises a remotely-sensed database which is used for storing remotely-sensed data in the same geographical area and an index library which is used for storing indexes of the remotely-sensed data on the server; one server corresponds to one geographical area; and each server from a second level to the N level comprises the index library which is used for storing library indexes with logical relations among representation servers. By the distributed remotely-sensed data managing system, data in databases on all levels of servers with subordinate logical relations can be shared, redundant storage data is effectively reduced, and storage space is saved.

Description

field of invention [0001] The invention relates to the field of remote sensing data management. More specifically, the present invention relates to a management method of distributed remote sensing data. Background technique [0002] Remote sensing image data has the characteristics of wide coverage and short acquisition cycle, and has a wide range of applications. With the improvement of sensor technology, the accuracy of remote sensing image acquisition is improved, and the update speed is faster, which makes the amount of image acquisition data increase rapidly. How to efficiently store and obtain useful information from massive remote sensing data is an important issue that needs to be solved urgently. question. [0003] Traditional remote sensing images are mainly managed by the file system. The image data itself is stored in the file system, and the relevant attribute information of the image is stored in the relational database. By establishing the mapping relation...

AI Technical Summary

Problems solved by technology

There are two problems in this centralized management method: First, the data of the same lower-level administrative region may be stored repeatedly in multiple upper-level administrative region databases with affiliation relations

For huge remote sensing data and remote sensing databases, this will consume a lot of storage space

Second, the data application at each level only obtains data from the corresponding level databases, which is not conducive to data sharing between the level databases. When the data in the lower level databases is updated, the upper level databases must update the data, and the use is consistent with the data. The cost of permanent maintenance is high, and the timely update of data cannot be guaranteed

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