STRATEGIES OF GNSS PROCESSING AND MEASURING UNDER VARIOUS OPERATIONAL CONDITIONS

Стратегії обробки та вимірювання GNSS у різних умовах розробки
Orynbassarova E. Yerzhankyzy A. Shults R. Roberts K. Togaibekov A.
2022 Natsionalnyi Hirnychyi Universytet

Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu
2022 Issue 3 146 - 150 pp.

Purpose. GNSS technology is one of the key elements of maintenance of the mining works. Mostly, the GNSS observations in mining regions are accomplished under adverse surveying conditions. The presented paper is aimed at studying the problem of GNSS accuracy under various adverse operational conditions that may encounter during surveying works in deposit fields and downgrade the GNSS accuracy. Methodology. Despite the well-defined problem of GNSS accuracy, each year, new receiver models and software versions come into use, which in turn, needs a more profound analysis of their reliability, accuracy, and efficiency. This study provides relevant information about the static tests that were executed in the canopy, multipath, and open environments to assess the performance of the user segment from different manufacturers. The equipment of three manufactures was tested: Leica, Trimble, and Javad. The test results for two satellite systems, GPS and GLONASS, are presented. Findings. The obtained results can be generalized to the following outputs. Trimble performed the best on the canopy site in terms of position quality and fix solution. Javad had the best agreement for horizontal, height, and 3D solutions between dual and single frequency processing on the multipath site. On the open spot, Leica’s horizontal solution between dual and single frequency processing was the most consistent. It is challenging to state which receiver performed better in the vegetation cover. Originality. The study aims to develop a general procedure to estimate the accuracy of different GNSS processing strategies under different environments. Practical value. The given research has a strong hands-on background insofar as the principal stress is made on field measurements. The research results can be employed to refine the GNSS surveying workflow for open-pit mines.

canopy site , GNSS , multipath , precision positioning , static survey

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Satbayev University
Michigan Technological University
University of Technology
University of Grenoble Alps

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