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http://dx.doi.org/10.7848/ksgpc.2020.38.6.717

Estimation of Sejong VLBI IVP Point Using Coordinates of Reflective Targets with Their Measurement Errors  

Hong, Chang-Ki (Dept. of Geoinformatics Engineering, Kyungil University)
Bae, Tae-Suk (Dept. of Geoinformatics Engineering, Sejong University)
Yi, Sangoh (Space Geodetic Observation Center, NGII)
Publication Information
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography / v.38, no.6, 2020 , pp. 717-723 More about this Journal
Abstract
Determination of local tie vectors between the space geodetic techniques such as VLBI (Very Long Baseline Interferometer), SLR (Satellite Laser Ranging), DORIS (Doppler Orbit determination and Radiopositioning Integrated on Satellite), GNSS (Global Navigation Satellite System) is essential for combination of ITRF (International Terrestrial Reference Frame). Therefore, it is required to compute IVP (Invariant Point) position of each space geodetic technique with high accuracy. In this study, we have computed Sejong VLBI IVP position by using updated mathematical model for adjustment computation so that the improvement on efficiency and reliability in computation are obtained. The measurements used for this study are the coordinates of reflective targets on the VLBI antenna and their accuracies are set to 1.5 mm for each component. The results show that the position of VLBI IVP together with its standard deviation is successfully estimated when they are compared with those of the results from previous study. However, it is notable that additional terrestrial surveying should be performed so that realistic measurement errors are incorporated in the adjustment computation process.
Keywords
Space Geodetic Technique; VLBI; IVP; Adjustment Computation;
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1 Abbondanza, C., Altamimi, Z., Sarti, P., Negusini, M., and Vittuari, L. (2009), Local effects of redundant terrestrial and GPS-based tie vectors in ITRF-like combinations, Journal of Geodesy, Vol. 83, pp. 1031-1040.   DOI
2 Altamimi, Z., Collilieux, X., and Metivier L. (2011), ITRF2008: an improved solution of the 306 international terrestrial reference frame, Journal of Geodesy, Vol. 85, pp. 457-463.   DOI
3 Dawson, J., Sarti, P., Johnston, G.M., and Vittuari, L. (2007), Indirect approach to invariant point determination for SLR and VLBI systems: an assessment, Journal of Geodesy, Vol. 81, Issue. 6-8, pp. 433-441.   DOI
4 Johnston, G., Dawson, J., and Naebkhil, S. (2004), The 2003 Mount Stromlo Local Tie Survey, Record 2004/20, Geoscience Australia, Canberra, Australia, pp. 8-10.
5 NGII (2019a), Enhancement of National Geodetic Network, National Geographic Information Institute, Suwon, Korea. 229p. (in Korean)
6 NGII (2019b), Survey 2nd Report for Maintenance of Sejong VLBI Station, National Geographic Information Institute, Suwon, Korea. 71p. (in Korean)
7 Sarti, P., Sillard, P., and Vittuari, L. (2004), Surveying co-located space-geodetic instruments for ITRF computation, Journal of Geodesy, Vol. 78, pp. 210-222.   DOI
8 Schaffrin, B. (2003), Advanced Adjustment Computations, Lecture Notes (GS762), Dept. of Geodetic Science, Ohio State University, Columbus, Ohio, USA.
9 Shen, Y., Xinzhao, Y., Jiexian, W., Bin, W., Junping, C., Xiaping, M., and Xiuqiang, G. (2015), Mathematical model for computing precise local tie vectors for CMONOC co-located GNSS/VLBI/SLR stations, Geodesy and Geodynamics, Vol. 6, No. 1. pp. 1-6.   DOI
10 Snow, K.B. (2002), Applications of Parameter Estimation and Hypothesis Testing to GPS Network Adjustments, Report No. 465, Dept. of Geodetic Science, The Ohio State University, Columbus, Ohio, USA.