A research on uncertainty evaluation index for line element

Pao Yue-kong Library Electronic Theses Database

A research on uncertainty evaluation index for line element

 

Author: Hu, Huan Jun
Title: A research on uncertainty evaluation index for line element
Degree: M.Sc.
Year: 2012
Subject: Geographic information systems.
Uncertainty -- Mathematical models
Hong Kong Polytechnic University -- Dissertations
Department: Dept. of Land Surveying and Geo-Informatics
Pages: xxii, 76 p. : ill. ; 30 cm.
Language: English
InnoPac Record: http://library.polyu.edu.hk/record=b2598735
URI: http://theses.lib.polyu.edu.hk/handle/200/6939
Abstract: In recent decades, spatial data quality became one of the most active area in GIS. The principle of spatial data uncertainty has been deeply developed from classical measurement adjustment. Several fundamental principles are issued, and the objective is expanded from point error to objective uncertainty. The dimension is also expanded from 2D to 3D then to ND. In this research study, the development and current research status of spatial data uncertainty has been reviewed. The methods of line element uncertainty evaluation and development of error bands have been reviewed and introduced in detail. Other theories of line element uncertainty quantitative analysis have also been covered. The resent principles and mathematical foundations theories and models have been stated. The principle of adjustment has been reviewed and mathematically reasoned from classical adjustment to generalized adjustment. The principle of error bands and other line uncertainty quantization method have been introduced formula by formula. The resent types of error bands are programming realized and visualize by software Matlab R2007b. The thoughtfulness and analysis of experiment are also given. The practical indexes of line uncertainty evaluation is also done in this study. Several simple methods have been introduce and realized by Wolfram Mathematica 7. Indexes l₁, l₂ and l₃ have been issued experimented. The analyses and discussions are also given in follow.

Files in this item

Files Size Format
b25987355.pdf 2.517Mb PDF
Copyright Undertaking
As a bona fide Library user, I declare that:
  1. I will abide by the rules and legal ordinances governing copyright regarding the use of the Database.
  2. I will use the Database for the purpose of my research or private study only and not for circulation or further reproduction or any other purpose.
  3. I agree to indemnify and hold the University harmless from and against any loss, damage, cost, liability or expenses arising from copyright infringement or unauthorized usage.
By downloading any item(s) listed above, you acknowledge that you have read and understood the copyright undertaking as stated above, and agree to be bound by all of its terms.

     

Quick Search

Browse

More Information