Universiti Teknologi Malaysia Institutional Repository

Development of a low-cost software for 2D deformation detection in geodetic network

Endot, Ernyza and Setan, Halim and Md. Som, Z. A. (2004) Development of a low-cost software for 2D deformation detection in geodetic network. In: International Symposium and Exhibition on Geoinformation (ISG) 2004, 21-23 Sept 2004, Kuala Lumpur, Malaysia.

[img] PDF
Restricted to Repository staff only



Deformation monitoring in Malaysia has become more important nowadays due to the increasing risk of hazardous tragedies such as landslide, subsidence and structural movement in engineering structures. This paper focuses on the development of a low-cost software for deformation detection using Fredericton approach (2D applications). This in-house software (FREDY03) is developed under windows environment. Fredericton approach, which is based on the analysis of the invariant functions of displacements, concisely performs the analysis and least squares fitting of changes of distances and angles derived from the adjusted (minimum constraints) coordinates. This software consists of two modules: least square estimation (LSE) and deformation detection analysis. For verification, the results from FREDY03 are compared to our in-house software, DEFORM99 (via Congruency Testing). The results indicate that both approaches (Fredericton vs Congruency) give similar outcome on the stability status of the monitoring stations. Consequently, users can determine deformation detection between two epochs using the developed low-cost software.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:deformation analysis, DEFORM99, Quasi observation
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Geoinformation Science And Engineering
ID Code:1367
Deposited By: Tajul Ariffin Musa
Deposited On:03 Mar 2007 05:14
Last Modified:30 Aug 2017 08:20

Repository Staff Only: item control page