Dissertation > Excellent graduate degree dissertation topics show

A Research on the Application of Graphic Query System for Data from Automatic Weather Stations

Author: ZhengHongZuo
Tutor: YangGuoGui
School: National University of Defense Science and Technology
Course: Computer Science and Technology
Keywords: AWS QC Kriging GIS
CLC: P415.12
Type: Master's thesis
Year: 2010
Downloads: 82
Quote: 1
Read: Download Dissertation

Abstract


The development of an entire graphic query system for data from Automatic Weather Stations (AWS) is associated with a lot of work, such as the quality control of meteorological data, the applications of GIS, etc. In this paper, several key issues have been disscued during the design of the abovementioned system, and also the sulotions of the issues have been put forward.1. Beginning with the presentation of the conceptual spatiail variogram theories, 7 spatial interpolations have been introduced.After a large amount of data statistics and comparisions,The Time CoKriging was selected as the best model of spatial quality control. And according to the initial documents retrieving, we are the first to apply this model in the fields of quality control for meteorological data. Finally, the quality control software for data from ASW was designed and implemented.2. Surfer Automation supports Distribution Component Object Mode(lDCOM),by activating which, Surfer ActiveX will be called to draw contour on web pages. A rule of naming the contour graphical files and the algorithm of building the abovementioned files are discussed, with which, the repeatedly search of database and generation of images are avoided so that the speed of image display increases, and simultaneously, the write violation, which is probably caused by mass parallel access, is avoided. Eventually, the problem of calling Surfer ActiveX is resolved. The load test indicates that the speed of drawing contour on web pages by using the algorithm is increased by twice as much.3. By studying the earth coordinate system and deeply analyzing the algorithm of Google Map, the recent URL format of the Google Map tiles is discovered and the verified program is coded to download the tile files of the specified area. With these files, a tiling map server can be made in the future so as to lower the risk of depending on Google Maps totally. At the same time, the reason causing the offset of Google Map China is found, and a simple and pragmatic method of correcting the offset of the coordinate system is put forward. The actual measurement shows that the average distance between coordinate system corrected and WGS-84 is less than 30 meters.4. In combination with the techniques of drawing contour with surfer, the contour and images of radar can be overlaid to Google Map. And also, the driving route between any two automatic weather stations is calculated in order to make the maintenance more easily. 5. The Graphic Query System of data from Hainan Automatic Weather Stations has been designed and developed. The load test result shows that the performance of the system can meet the requirement of the current business.

Related Dissertations

  1. The Studying of University Students’ Community Management Based on GIS,G647
  2. The Load Research and Comprehensive Evaluation on the Agricultural Non-Point Source Pollution in Nantong,X592
  3. Research on the Soil Environmental Function Zoning,X321
  4. The Design and Implementation of a Miniature Polluting Gas Monitoring System,TP277
  5. Based on lbs Study of the Vehicle Management System,TP311.52
  6. The Research and Implementation of the Flood Control and Disaster Alleviation Aided Decision Spupport System Based on VERGIS PLatform,TP311.52
  7. Research on the Application of 3D-GIS to Flood Route Visualization Based on ArcGIS and SketchUp,TV123
  8. Design of Communication System of Meso-scale Auto Weather Station,P415.12
  9. Research on Global Optimization Algorithm Based on Kriging Model,TH122
  10. Optimization of Gasoline Engine Lubrication System,U464.137
  11. Based on GPU / CPU multi- level parallel CFD Optimization Strategy,V221
  12. Map of Network Security Situation Based on Parallel Coordinates,TP393.08
  13. The Tianjin Construction Land Planning dynamic management system development,TP311.52
  14. Based on Vxworks Train Integrated Positioning System Design and Implementation,TP368.12
  15. Based on the low voltage distribution network power line carrier Monitoring System,TM76
  16. Based GPS_GIS fault breaker Positioning System Design and Implementation,TP368.1
  17. Low-voltage isolation switch housing Metal Casting Defect Analysis,TG249.2
  18. GIS-based warehouse management system design and implementation,TP311.52
  19. GIS-based Urban Land Grading and Evaluation Method of,F301
  20. RFID-GPS-GIS security system design,TN967.1
  21. Improved QC-LDPC code design and FPGA implementation,TN911.2

CLC: > Astronomy,Earth Sciences > Atmospheric science (meteorology ) > Atmospheric sounding ( meteorological observations ) > Atmospheric sounding instruments and equipment > Composite meteorological instruments and automation equipment > Automatic weather station
© 2012 www.DissertationTopic.Net  Mobile