Geodetski list, Vol. 67 (90) No. 4, 2013.
Stručni rad
Testing of CROPOS
Damir Šantek
orcid.org/0000-0001-7900-9048
; Državna geodetska uprava, Zagreb, Hrvatska
Sažetak
The paper describes the testing of CROPOS with considering to the accuracy of the "ideal conditions", the time interval required average measurement, span between two measurements and quality indicator coordinates (RMS). The analysis showed that the "standard" indicators of quality and quantity of observations (number of satellites, PDOP and RMS) alone are not sufficient for the conclusion that the results of measurements within proclaimed accuracy, that there are situations in which the data is satisfactory, and the result is not. Therefore, further analyses were conducted with the studied time interval fixing solutions in relation to the specified time observations. The analysis showed that the percentage of solutions that do not meet the criterion of accuracy correlated with the difference of time fixing solutions in relation to the default interval observations. If these differences are less than 5 seconds, the percentage of solutions that do not meet the criterion of accuracy is around 5%. It is also evident that it is possible to reduce the need to perform double (repeated) measurements if we take into account all the parameters that define the quality of the measurement accuracy (PDOP, RMS, number of satellites, the time interval of observations, etc.). The results indicate that, depending on the nature of measurement, the acceptance threshold of significance of 5%, you can throw out repeated measurements at the same point after a period of time if the acceptance criteria listed four indicators met. This hypothesis will be further examined in order to be able to prove it.
Ključne riječi
CROPOS; PDOP; accuracy; RMS; reliability
Hrčak ID:
112441
URI
Datum izdavanja:
16.12.2013.
Posjeta: 1.655 *