Reliable and redundant RTK positioning for applications in hard observational conditions

• Autorzy: Bakuła M. , Pelc-Mieczkowska R. , Walawski M.

Identyfikatory

DOI

10.2478/v10018-012-011-0

• Języki publikacji: EN

Abstrakty

EN

It is well known that RTK (Real Time Kinematic) positioning is a very efficient technique for determination of coordinates in real time, directly on location. Although this technique has been well known since the mid-nineties of the last century, the common use of this technique developed since permanent reference GNSS (Global Navigation Satellite Systems) stations started operating as the national reference systems. Positioning in real time is very convenient for users who do not need to know any advanced technique of post-processing, especially in cases when no obstructions exist around the measured point exist. However, in practice, there are some situations when the use of RTK technique makes some difficulties, especially if the GNSS receiver has no full availability of satellites. Obstructions caused by trees, buildings, power lines etc. limit satellite availability and in consequence decrease the reliability of determined coordinates significantly. In those situations gross errors of even meters can appear in RTK positioning. In order to avoid misleading coordinates occurring we can use more than one RTK receiver simultaneously. The paper presents an approach to the RTK technology based on the simultaneous use of three different RTK receivers. Three different GNSS/RTK receivers can be set on a special mounting beam and additionally RTK positions are sent in real time to a computer. The computer software analyses not only the precision but also checks the accuracy and reliability of the RTK positions determined. Consequently, the new approach to RTK survey presented can allow obtaining reliable coordinates of centimeter accuracy even under very severe forest conditions.

Słowa kluczowe

EN

GNSS; VRS; RTK; RTCM; NMEA

• Wydawca: Centrum Badań Kosmicznych PAN ; De Gruyter
• Czasopismo: Artificial Satellites : Journal of Planetary Geodesy
• Rocznik: 2012
• Tom: Vol. 47, No. 1
• Strony: 23--33
• Opis fizyczny: Bibliogr. 16 poz., rys., tab.

Twórcy

autor

Bakuła M.

• University of Warmia and Mazury, Poland

autor

Pelc-Mieczkowska R.

• University of Warmia and Mazury, Poland

autor

Walawski M.

• University of Warmia and Mazury, Poland

Bibliografia

• Bakuła M. (2012) An approach to reliable rapid static GNSS surveying. Survey Review (in print).
• Bakuła M., Kamierczak R., Grunwald G. (2011) Analysis of possibilities for applying the ASG-EUPOS system services for establishing the detailed control networks. Technical Sciences 14 (2), 217-228.
• Bakuła M. (2010) Network code DGPS positioning and reliable estimation of position accuracy, Survey Review, 42, 315, pp. 82-91.
• Bakuła M., Oszczak S., Pelc-Mieczkowska R. (2009) Performance of RTK positioning in forest conditions: case study. Journal of Surveying Engineering, American Society of Civil Engineers, Vol. 135, No 3, 125-130.
• Bosy J., Graszka W., Leończyk M. (2007) ASG-EUPOS - a multifunctional precise satellite positioning system in Poland. Eur J Nav 5(4):30-34.
• Dai L., Han S., Wang J., Rizos C. (2001) A study on GPS/GLONASS multiple reference station techniques for precise real-time carrier phase-based positioning. ION GPS 2001, 392-403.
• Firuzabardi D., King R.W. (2011) GPS precision as a function of session duration and reference freme using Multi-point software. GPS Solution. DOI 10.1007/s10291-011-0218-8.
• Giménez E., Selmira Garrido M., Clara de Lacy M., Gil A.J. (2011) Comparing RTK positioning from updated REGAM and MERISTEMUM CORS networks in Southeast Spain, Journal of Applied Geodesy 5, 23-35.
• Hasegawa H., Yoshimura T. (2003) Application of dual-frequency GPS receiver for static surveying under tree canopy. Journal of Forest Research, Springer-Verlag, Tokyo Inc, 8(2), 103-110.
• Hu G.R., Khoo H.S., Goh P.C., Law C.L. (2003) Development and assessment of GPS virtual reference stations for RTK positioning. Journal of Geodesy, 77(5-6): 292-302.
• Lee I., Ge L. (2006) The performance of RTK-GPS for surveying under challenging environment al conditions. Earth Planets Space, 58, 515-522.
• Pirti A., Gümüş K., Erkaya H., Gürsel Hoşbaş R. (2010) Evaluating repeatability of RTK GPS/GLONASS near/under forest environment. Croatian Journal of Forest Engineering, Vol 31, Issue 1, 23-33.
• Teunissen P.J.G., Verhagen S. (2008) GNSS ambiguity resolution: when and how to fix or not to fix? In: Xu P, Liu J, Dermanis A (eds) VI Hotine-Marussi symposium on theoretical and computational geodesy. Springer, Berlin, 143-148.
• Verhagen S. (2004) Integer ambiguity validation: an open problem? GPS Solution 8(1):36-43.
• Vollath U., Landau H., Chen X., Doucet K., Pagels C. (2002) Network RTK versus single base RTK - understanding the error characteristics, Proceedings of ION GPS 2002, Portland, OR, 2774-2781.
• Wang Ch., Feng Y., Higgins M., Cowie B. (2010) Assessment of commercial network RTK user positioning performance over long inter-station distance. Journal of Global Positioning systems, Vol. 9. No. 1, 78-89.

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).