Cadastral database positioning accuracy improvement: a case study of handling common boundaries different values / Syazana Nabihah Samsudin

Experimenting with ways for enhancing cadastral map positional accuracy (PAI) and connecting them with third-party geospatial data in land administration systems is a rising interest around the world. This interest has sparked a rise in cadastral modernization, which aims to replace single and static parcel paper maps with a new cadastral database based on a global digital map. However, this transition presents challenges, particularly regarding the common boundaries in the cadastral database, since the same boundary line have several values based on each of the Certify Plan because of the data updating from time to time. Therefore, the aim of this paper is to study the impact of different values of common boundary in development of cadastral database of Perlis State. The method to accomplish the goal is by using the Least Square Adjustment (LSA) of two different method which are bearing and angular methods. By analysing the standard error and the effect on the coordinates, we can determine the best method for handling the common boundary issues. The results indicate that the angular method is more effective in handling the different values of common boundaries in the database compared to the bearing distance method. The novelty of this study, where the higher positional accuracy of the cadastral database can be achieved and can assist the Department of Survey and Mapping Malaysia (DSMM) in handling the variety type of Certify Plan classes in the database by using Angle Distance Method.