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Marine environmental prediction product parallel processing method applied to tiled map services

A marine environment and parallel processing technology, which is applied in the direction of concurrent instruction execution, electrical digital data processing, geographic information database, etc., can solve problems such as numerical forecasting products failing to achieve forecasting results, data processing methods unable to produce timely products, and delaying disaster warnings, etc. , to achieve the effect of shortening the release cycle, ensuring fast processing, and ensuring real-time performance

Active Publication Date: 2014-09-24
ZHEJIANG UNIV
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Problems solved by technology

[0003] The marine environment forecast data has the characteristics of multi-source heterogeneity, real-time dynamics, and huge data volume. Conventional data processing methods cannot generate products in a timely manner. Numerical forecast products that lack real-time performance cannot achieve good forecast results, and even delay early warning of disaster

Method used

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  • Marine environmental prediction product parallel processing method applied to tiled map services
  • Marine environmental prediction product parallel processing method applied to tiled map services
  • Marine environmental prediction product parallel processing method applied to tiled map services

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Embodiment

[0057] In order to verify the effectiveness of the present invention, the numerical forecast data of the Indian Ocean sea surface wind field is taken as an example to test the change of data processing efficiency.

[0058] In this embodiment, Matlab Distributed Computing Toolbox (DCT) is used to realize parallel processing of marine environment forecast products. DCT sets one computer in the cluster as the task management node (JobManager), and the rest of the computers are computing task worker nodes (Worker). The task management node divides the task into multiple independent subtasks (Task) and hands them over to the computing task. Node operation processing. Such as figure 1 shown.

[0059] The hardware architecture is shown in Table 1.

[0060] Table 1

[0061]

[0062] The resolution of the data sample is 251×476, including parameters such as temperature, humidity, air pressure, precipitation, wind field, etc., and various types of pictures need to be generated. ...

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Abstract

The invention discloses a marine environmental prediction product parallel processing method applied to tiled map services. The method comprises the following steps that (1) the longitude and latitude of metadata of a marine environmental prediction product are read, a WGS84 coordinate is converted into a WebMercator projection coordinate; (2) a data depth layer is cut into n parts according to the kernel number of a parallel machine, an MATLAB parallel strategy is designed; (3) a map grading number is set; (4) according to the current map level interpolation, an MATLAB drawing instruction is used for generating graded section files; (5) drawing of all parameters of the current map grade is completed; (6) an LOD mode is used for organizing the section files, and drawing of all parameters of all grades is completed; (7) after all parallel computers complete processing, metadata are generated. The marine environmental prediction product parallel processing method applied to tiled map services has a good application prospect in the informatization research field of marine environmental sciences. According to the method, a parallel computing technology is used for guaranteeing quick processing of marine environmental prediction data, and the release cycle of the tiled map services is shortened.

Description

technical field [0001] The invention belongs to the field of marine environment forecast information. In particular, it relates to a parallel processing method for marine environment forecast products suitable for tile map services. Background technique [0002] With the development of marine-related industries such as marine fishery, coastal tourism, marine transportation, and offshore oil and gas industry, the contribution of the marine industry to the national economy is increasing. According to the "2012 China Marine Economic Statistical Bulletin", the total output value of the national marine industry in 2012 reached 5,008.7 billion yuan, an increase of 7.9% compared with 2011, and the total output value accounted for 9.6% of GDP. At the same time, China is one of the countries most severely affected by marine disasters in the world. On average, direct economic losses caused by various marine disasters such as storm surges, sea ice, sea fog, and hurricanes exceed 10 bi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
CPCG06F9/38G06F16/29G06F30/392
Inventor 刘仁义杜震洪张丰林贤辉王叶晨梓
Owner ZHEJIANG UNIV
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