FIG Peer Review Journal


Establishing an Accurate Continuous Nationwide Cadastre Based on the Cadastral Triangulation Method (3243)

Michael Klebanov and Yerach Doytsher (Israel)
Mr. Michael Klebanov
Technion – Israel Institute of Technology
Technion, Transportation and Geo-Information Eng.
Corresponding author Mr. Michael Klebanov (email: klebanov[at], tel.: + 972 3 6231936)

[ abstract ] [ handouts ] [ handouts ]

Published on the web 2009-02-16
Received 2008-12-01 / Accepted 2009-02-16
This paper is one of selection of papers published for the FIG Working Week 2009 in Eilat, Israel and has undergone the FIG Peer Review Process.

FIG Working Week 2009
ISBN 978-87-90907-73-0 ISSN 2307-4086


Conversion of a graphical cadastre as well as a relatively non-accurate digital cadastre to an accurate coordinate based legal cadastre is a major challenge within the cadastral community in many countries. This challenge to solving the conversion problem being characterized by optimally determining the turning points position and improved cadastral accuracy motivates the development of modern techniques suitable to performing the aforementioned task. Solving this issue on nationwide level requires development of new approaches to joining separate cadastral blocks into a seamless continuity while overcoming relatively large discrepancies (at least according to the Israeli experience) between adjoining parcellations caused mainly by low level accuracy measurements in the first half of the 20th century. The Cadastral Triangulation (CT) method, which has been recently proposed by the authors, enables achieving the required solution based on global transformation of adjacent cadastral blocks. This paper presents an expanded and advanced application of the newly proposed CT method based on the Gauss-Helmert model of Generalized Least Squares Adjustment, aiming to obtain optimal transformation parameters of the separate parcellations (cadastral projects). The results of applying the proposed method to real data that presented in the paper demonstrate its effectiveness in connecting adjoining cadastral blocks. The efficiency of the method is expressed by a decrease of system residuals in comparison with presently used methods for matching cadastral boundaries. The proposed method may definitely be used as a primary computational algorithm for implementation of a coordinate based cadastre on a nationwide level.
Keywords: Geoinformation/GI; Digital cadastre; Cadastre; Land management; Land readjustment; coordinate based cadastre; boundaries matching; least squares adjustment