Opisano konstrukcję zaprojektowanego i wykonanego w Instytucie Geodezji i Kartografii komparatora łat kodowych z użyciem niwelatorów cyfrowych w wersji "nieruchomy niwelator cyfrowy - ruchoma łata kodowa", omówiono wyniki badań porównawczych komparatorów oraz wyniki wstępnego badania zestawów niwelatorów cyfrowych DiNi 11, DiNi 12 firmy Zeiss i łat kodowych LD 13, niwelatorów cyfrowych NA3000, NA 3003 firmy Leica i łat kodowych GPCL 2, GPCL 3 oraz łaty kodowej i niwelatora cyfrowego DL101-C firmy Topcon.
EN
Calibration of code staffs should be done with the use of laser interferometer and digital level, which is utilized for field measurements applying the calibrated staffs, as not only staff graduation is checked, but ability of self-dependent, correct measurements and conversion to metric system by leveling instrument is also verified. Calibration can be done on comparator in version "movable digital level - fixed code staff", constructed at the Institute of Geodesy and Cartography in Warsaw in March 2003, when there was no adequately high laboratory to move staffs vertically. Such a comparator was described in IGiK Proceedings (J. Janusz, W. Janusz, M. Kolodziejczyk, 2003a,b). In January 2004, at new laboratory, which enables to move staffs vertically, new comparator in version "fixed digital level movable code staff" was constructed at the Institute of Geodesy and Cartography. Construction of this comparator and results of comparative examinations of both versions were described in the presented work. It was found, that using comparator in version "fixed digital level movable code staff" it is possible to obtain higher precision of calibration, because level's readouts are not affected with changes of comparator position and with variable refraction distortions of axis of collimation, while aiming telescope at different levels. The results of calibration for the following code staffs were discussed: - 8 LD 13 code staffs with the use of Zeiss DiNi 11 and DiNi 12 digital levels; - 2 GPCL2 code staffs and 2 GPPCL3 code staff s with the use of Leica NA 3003 digital level, as well as 2 GPCL2 code staffs using Leica NA 3000 digital level; - one code staff with the use of Topcon DL 101-C digital level. It was found, that readouts on staffs can be done with mean errors 3-7 [...]m, while A coefficient of systematic error can be determined with mean error mA = 1 - 3 [...]m/m. At the same time it was found, that A coefficient, which characterizes deviation of the average meter of graduation, did not exceed for all checked staffs 15 [...]m/m, although some of these staffs were intensively exploited for about 7 years. In the course of examination of LD 13 staffs with the use of DiNi 11 level it was found, that staff graduation can be affected locally with great errors, around 0,2 mm, while aiming at fragment of graduation, which is permanently damaged by its scratching or uncleanness. Some examples were given, how to determine on comparator with the use of digital level those fragments of staff graduation around damages, which should not be taken for readouts.
Opisano wielousługowy system zarządzania UMC z SSC, który wchodzi w skład rodziny produktów Unisphere Solutions. Przedstawiono bogate możliwości systemu oraz dane techniczne.
EN
Article presents multiservices network management that are a part of Unisphere Solution product family. In this paper a wide range of possibilities and technical data of described system are discussed.
Na podstawie posiadanego zbioru testowych pomiarów dalmierzy elektromagnetycznych założono bank danych obejmujący informacje w trzynastu kategoriach. Z założonego banku danych wyselekcjonowano dane o charakterze technicznym niezbędne do obliczenia relacji średniego błędu pojedynczego pomiaru m0 do deklarowanego przez producenta błędu standardowego ms oraz relacji poprawek dalmierza K do błędów ms. Dane te posłużyły do oceny jakości dalmierzy różnych firm, opierającej się na stwierdzeniu z jaką częstością występują różne wartości m0/ms oraz K/ms.
EN
Computer database, containing metrological characteristics of ca. 900 electronic distance meters (EDM’s), produced by 11 world companies, which were tested on comparator’s bases in Poland, was prepared at the Department of Geodesy, Institute of Geodesy and Cartography. About 1600 calibrations were analyzed and technical data were selected, which are needed for calculating relations between mean error of single measurement m0 and its standard error ms (as declared by producer), as well as for determining relations between corrections of distance meter K and its standard error ms. These data served for evaluation of quality of distance meters produced by various companies. The evaluation was based on determination, how frequently occur different values of m0/ms and K/ms. Moreover, the analysis was aimed at examination of changes of distance meter’s correction K in time, which characterizes stability of results of measurements. The conclusions drawn from this analysis confirm need of testing each distance meter on field comparator, in order to ensure: • national metrological standard, • control of initial values, entered to distance meter memory, e.g. fixed corrections of distance meter, mirror corrections, used scale coefficients (atmospheric, projection, etc.), • check of affecting the measured distances by use of untypical distance meter fittings, for instance mirrors, mirror carriers, carriers of mounts-on EDM, etc.
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.