SELÇUK ÜNİVERSİTESİ KONTROL BAZI

Abstract

Since the early 1970s, Electronic Distance Measurements (EDMs) are widely used in the length measurements. To give accuracy and reliable results from these instruments, EDM users should have a good knowledge of measurement system and should take necessary precaution during measuring and calibration of EDMs should be done. In this context, periodically determining of zero addition error which causes systematic error during length measurements, scale coefficient error and phase difference measurement errors are important. These errors which are named as instrument parameters can be determined in baseline which is set up for calibrations. To determine instrument parameters, first control baseline was set up in 1990 in the campus area of Selcuk University. But, the baseline had become unusable in consequence of new road and changed campus plan. The new baseline was set up in 2010 to control and to calibrate the EDMs used from both government agency and Selcuk University. The baseline has 6 points and its length is 660 m. Up to this day, in the created baseline, the EDMs which are used by Konya, Karaman, Aksaray, Eskisehir, Afyon Cadastre Directorates were made control and calibration. In this study, the design of newly created baseline and technical properties are described. Furthermore, to determine instrument parameters in the campus area of Selcuk University, a program was prepared in Microsoft Excel 2007. With the prepared program, zero addition error, scale coefficient error and phase difference measurement error of EDMs can be determined and for determined parameters, significance test can be made.