Testing of Homogeneity of Coordinates of Various Permanent GNSS Reference Stations Networks of the Republic of Serbia According to the Common Requirements for Proving Competence

Gučević, Jelena; Šimšić, Olivera Vasović; Delčev, Siniša; Kuburić, Miroslav

doi:10.3390/s22207867

Cited by 2 publications

(3 citation statements)

References 12 publications

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“…document contain recommendations on the interpretation of proficiency testing data and should be applied in analyzing the results obtained in the ILC. (Gučević, Vasović Šimšić, Delčev, Kuburić, 2022) and on the Measuring bench of LKM-Belgrade, Figure 4. The sudden jump in the absolute differences of nominal values at the measuring point L = 150 mm confirmed the initial suspicions that the existing "geometry" was the cause of the "Unsatisfactory" result in Table 1.…”

Section: Discussionmentioning

confidence: 99%

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Interlaboratory comparison as a source of information about the problem

Gučević,

Delčev,

Vasović Šimšić

et al. 2024

geod. vestn.

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Methods of evaluation of interlaboratory comparison results are prescribed by ISO standards. Ruler is probably one of the most widely used length measuring instrument in the world. For laboratories that plan to be accredited for the calibration of Ruler, the acquisition of a specialized Measuring bench is not economically feasible. Confidence in the measured result depends on the measurement uncertainty, and where deficiencies are observed, the values that contribute to the measurement uncertainty should be investigated. This paper describes an interlaboratory comparison for a small number of laboratories on the example of a Measuring bench for calibrating Ruler and indicates the procedure for problem identification; diagnosis of causes; consideration of solutions; initiation of action for improvement and monitoring of the results of applied solutions. The authors documented the problem and listed the elements that contributed to "Unsatisfactory" result in interlaboratory comparisons. They described the actions they took to overcome the "Unsatisfactory" result, analyzed whether the proposed solutions led to "Satisfactory" result and took actions accordingly. The paper presents the results of the international interlaboratory comparison, which are a confirmation of the competence of the personnel, measuring calibration equipment and calibration method.

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Section: Discussionmentioning

confidence: 99%

“…where: Equation (2) generates a "Satisfactory" result, while Equation (3) generates an "Unsatisfactory" result (ISO/IEC 17043. 2010), (Gučević, Vasović Šimšić, Delčev, Kuburić, 2022). "The E n the ratio should usually be within the range ± 1.…”

Section: Demonstration Of Competencesmentioning

confidence: 99%

Interlaboratory comparison as a source of information about the problem

Gučević,

Delčev,

Vasović Šimšić

et al. 2024

geod. vestn.

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“…the research previously conducted by the author [32], it is justified to expect variable levels of coordinate accuracy.…”

Section: Conflicts Of Interestmentioning

confidence: 93%

Practical Limitations of Using the Tilt Compensation Function of the GNSS/IMU Receiver

Gučević,

Delčev,

Vasović Šimšić

2024

Remote Sensing

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The research in this paper is related to the accuracy of the tilt compensation function of the GNSS/IMU receivers, which were examined in an open sky environment. The purpose of the paper is to point out to geodesists the conditions and limitations of using GNSS/IMU technology in precise measurements to not jeopardize the coordinate’s accuracy. The environment in which the measurement is made affects the quality of the GNSS signal and can limit the visibility of the satellite, leading to larger errors in the measurement. In this experiment, the current performance of the GNSS/IMU receivers was checked. Seven GNSS/IMU receivers were used for the realization of the experiment. For six receivers the compensation angle was α = 30°, while for one receiver, the compensation angle was α = 45°. The standard uncertainty of GNSS coordinates of the antenna phase center has values less than 9 mm. The standard uncertainty of the IMU component has values less than 31 mm. The measurement uncertainty of the position of the used GNSS receivers is in the range of 18.1 mm to 31.7 mm. The limit values for the differences along the coordinate axes x and y were determined, and their values are from 26 mm to 44 mm. In the conducted experiment, it was confirmed that three GNSS/IMU receivers have a “Satisfactory” result. The results show that GNSS/IMU measurements with a slope greater than 30° significantly affect the accuracy and reliability of GNSS/IMU technology. A slope greater than 45° has a deviation along the coordinate axes of 121.3 mm. The conducted research is particularly important for geodetic works that require high positioning performance. The testing method of the GNSS/IMU receiver presented in this paper can help its users to make correct conclusions regarding the coordinate accuracy of the measured point of interest.

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Testing of Homogeneity of Coordinates of Various Permanent GNSS Reference Stations Networks of the Republic of Serbia According to the Common Requirements for Proving Competence

Cited by 2 publications

References 12 publications

Interlaboratory comparison as a source of information about the problem

Interlaboratory comparison as a source of information about the problem

Practical Limitations of Using the Tilt Compensation Function of the GNSS/IMU Receiver

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