Remote-sensing data management system and method

A data management system and remote sensing image technology, applied in electrical digital data processing, special data processing applications, transmission systems, etc., can solve problems such as high redundancy and poor scalability, improve processing efficiency, reduce retrieval pressure, and quickly locate. Effect

Active Publication Date: 2012-09-12
AEROSPACE INFORMATION RES INST CAS
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Problems solved by technology

[0014] In view of the problems existing in the prior art, the purpose of the present invention is to provide a distributed and scalable remote sensing image data management system and method based on direct addressing. It supports a distributed and dynamically expandable storage architectu

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  • Remote-sensing data management system and method

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[0037] like figure 1 As shown, the method of the present invention introduces a virtual disk space (VDS, Virtual Disk Space) on the storage site, and divides a single storage system that the original image direct addressing method is only suitable for into M virtual disk spaces, which are respectively deployed in On N sites of a distributed storage system (where N≤M).

[0038] For users, all VDSs constitute a complete data storage space, but in fact, each VDS is deployed on the corresponding distributed storage site, and is associated with the mapping table on the operation and maintenance service site, such as figure 2to ensure that each VDS can be mapped to the specified site IP address. Through VDS migration between sites, dynamic expansion and change of system storage sites can be realized, so that the system has the scalability of a distributed storage system.

[0039] The internal file organization of each VDS is as follows image 3 As shown, the organization method ...

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Abstract

The invention discloses a remote-sensing data management system and method and aims at supporting distributed extensible storage system architecture by a remote-sensing image direct addressing method. According to the method, a virtual disk space idea is introduced to the integration of an original method, so that the capabilities of dynamically extending and concurrently quickly retrieving distributed storage nodes are obtained and the requirement on building of a mass image database is met; and high-efficiency and quick positioning of mass data are realized by using a method for direct addressing. Particularly, in a mass remote-sensing image data service system, data requests of internal services such as data pre-processing, product production, experimental verification and data distribution are submitted under the condition that data information is known and are completely suitable for a direct addressing method, so that the retrieving pressure of the database can be greatly reduced and the integral processing efficiency of the service system is increased.

Description

technical field [0001] The invention relates to the field of remote sensing communication, in particular to a remote sensing image data management system and method. Background technique [0002] With the launch of satellites one by one, the data volume of remote sensing images has grown explosively, gradually developing from GB level to TB level and PB level. How to store and manage massive remote sensing data in a more orderly and efficient manner, and realize the rapid sharing of remote sensing information has become one of the key concerns in the field of spatial information science and remote sensing data business application organizations. [0003] The combination of distributed file storage and large-scale relational database is a commonly used solution at present (Lv Xuefeng, Cheng Chengqi, et al. Overview and overview of massive remote sensing data storage management technology [J]. Chinese Science: Technical Science 2011), this method The image files are mainly or...

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Application Information

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IPC IPC(8): G06F3/06G06F17/30H04L29/08
Inventor 顾行发余涛黄祥志孟庆岩李家国高海亮
Owner AEROSPACE INFORMATION RES INST CAS
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