Mathematical Models Used In Processing Measurements Made By Terrestrial Laser Scanning Technology Constantin Coarcă Surveying and Cadastre Department Faculty of Geodesy, Technical University of Civil Engineering Bucharest, Romania constantin_cosarca@yahoo.com Caius Didulescu Surveying and Cadastre Department Faculty of Geodesy, Technical University of Civil Engineering Bucharest, Romania caiusdidulescu@yahoo.com Adrian Savu Surveying and Cadastre Department Faculty of Geodesy, Technical University of Civil Engineering Bucharest, Romania adisavu2002@yahoo.com Aurel Sărăcin Surveying and Cadastre Department Faculty of Geodesy, Technical University of Civil Engineering Bucharest, Romania saracinaurel@yahoo.com Gheorghe Badea Surveying and Cadastre Department Faculty of Geodesy, Technical University of Civil Engineering Bucharest, Romania badeacadastru@gmail.com Ana Cornelia Badea Surveying and Cadastre Department Faculty of Geodesy, Technical University of Civil Engineering Bucharest, Romania badeacadastru@gmail.com Aurel Negrilă Surveying and Cadastre Department Faculty of Geodesy, Technical University of Civil Engineering Bucharest, Romania negrilaa@yahoo.co.uk —                                                                               !               I. INTRODUCTION In design works and construction and assembly works, a growing number of fields are unachievable without using geodetic measurement techniques, as well as special construction techniques. In constructions were transformed fundamental measurement techniques for guidance, direction and control of the construction, which require precise measurement methods. This led to the creation of specific technologies, which implicitly was felt in means of measurements and measuring instruments. The range of classical geodetic instruments was completed with new high precision instruments, terrestrial laser scanning instruments, to which are added measuring instruments in physics and mechanical engineering. Using geodetic measurement methods in engineering measurements made in different fields of construction requires, in addition to providing precision requirements, choosing appropriate equipment and technology. This choice was imposed both of precision calculations "a priori" (required or theoretical) – starting from a maximum given allowable deviation 8 as and the knowledge of execution and assembly technologies. Proceedings of the 2013 International Conference on Applied Mathematics and Computational Methods in Engineering 184