Influence of the earth’s topographic masses on vertical deflection... This paper explains the influences of topography of the Earth masses in the determination of vertical deflections needed for the transformation of the heights by means of trigonometric levelling methods in the real gravity field acceleration
Feasibility to develop three dimensional national digital cadastre database using remote sensing data... Development of the 3D NDCDB involves the introduction of height information into the existing cadastre boundary marks (CBMs), extracted from various data sources such as LiDAR for urban areas in Mukim Setapak, Kuala Lumpur, IFSAR for rural areas in Mukim Simpang Kiri, Batu Pahat, Johor and from field observation in cadastre survey using the trigonometric levelling technique for new CBMs at lot 48330, Bandar Johor Bahru....
Modern height determination techniques and comparison of accuracies... Height determination can be classified as geometric levelling, trigonometric levelling and GPS/Levelling depending on used instruments or the methods applied....
Comparison of l1 norm and l2 norm minimisation methods in trigonometric levelling networks... In this paper, the formulation of the L1 norm minimisation method will be explained and the success of the method in the detection of gross errors will be investigated in a trigonometric levelling network
