Massive gnss small file cloud storage method

A small file and cloud storage technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of not fully applying GNSS small file management, less attention to placement strategies, etc., to reduce memory consumption and save Storage space, simple effect

Inactive Publication Date: 2017-11-10
THE PLA INFORMATION ENG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Existing solutions focus on exploring the metadata model, analyzing the correlation between massive small files, adjusting the structure of the system and user access rules, etc. The placement strategy is less concerned and cannot be fully applied to the management of GNSS small files

Method used

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  • Massive gnss small file cloud storage method
  • Massive gnss small file cloud storage method
  • Massive gnss small file cloud storage method

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Embodiment Construction

[0018] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0019] Depend on Figure 1-4 Shown, the present invention in concrete implementation, comprises the following steps:

[0020] Step 1: Merge a large number of small GNSS files into large files to reduce the memory occupation of the NameNode (NameNode) by a large number of small files. The large number of small GNSS files includes the following two types of files: one is based on observation data, navigation ephemeris Observation files represented by weather files and meteorological files, and calculation result files represented by coordinate files, precise ephemeris, and precise clock error; both observation files and calculation result files adopt an internationally unified standard format , the receiver-independent exchange format (RINEX, Receiver Independent Exchange Format) used for observation files, the solution-independe...

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Abstract

The present invention relates to a method for cloud storage of massive GNSS small files, which effectively solves the problems of efficient storage, management, release and sharing of massive GNSS small files. ; and optimize the index block storage strategy, store the divided file blocks and index blocks on the node of the data block or the nearest data node from the data block, store the index of the GNSS data type on the name node, and reduce the storage capacity Consumption and name node memory consumption, improve the performance of writing, accessing and deleting a large number of small files, the method of the present invention is simple, easy to operate, saves storage space, reduces memory consumption, improves writing, reading and deleting efficiency, effectively improves massive The purpose of efficient storage, management, release and sharing of GNSS small files is a major innovation in the management of massive GNSS small files, with huge economic and social benefits.

Description

technical field [0001] The invention relates to the technical field of "Geodesy and Surveying Engineering" in the discipline of "Surveying and Mapping Science and Technology", in particular to a cloud storage method for massive GNSS small files. Background technique [0002] With the continuous development of science and technology, the global, national and regional continuous operating reference station network (CORS, Continuously Operating Reference Station System) has been continuously built, and the Global Navigation Satellite System (GNSS, Global Navigation Satellite System) is widely used in various fields , especially the continuous networking and continuous observation of the joint CORS with more reference stations and higher levels formed by the integration of independent CORS, the data volume of the global satellite navigation system is getting larger and larger. [0003] Massive data brings challenges to storage and management, and a large amount of data above ter...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/30
Inventor 吕志平李林阳陈正生崔阳黄令勇王宇谱吕浩孙大双
Owner THE PLA INFORMATION ENG UNIV
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