Analysis and Evaluation of Gnss Data

Mode of Delivery

Face to Face

Prerequisites and Co-Requisites

None

Recommended Optional Programme Components

Geodetic Parameters Estimation and Linear Hypothesis Testing Geodetic Networks Analysis Coordinate Systems and Transformations

Course Contents

This course provides candidates with profound knowledge on the definition and components (GPS+GLONAS+Galileo+COMPASS+…) of GNSS (Global Navigation Satellite Systems), coordinate and time systems used in the GNSS, almanac data, RINEX (Rreceiver Independent Exchange Format) ephemeredes files, precise ephemeris files, computing coordinates of the satellites in the GNSS, error sources in the GNSS, the GNSS code-phase and doppler observables, pre-analysis of the GNSS observables, mathematical modeling of the GNSS observables, geometry-free mathematical model, geometry-base mathematical model, observable files in the RINEX, absolute positioning, relative positioning, single-baseline solution, multi-baseline solution, integer ambiguity resolution and validation, adjustment of GNSS networks, analysis and testing the results acquired from the GNSS network, transforming the GNSS results to horizontal or vertical national datum, design of the GNSS network.

Weekly Schedule

1) Definition and components (GPS,GLONAS,Galileo,COMPASS,…) of GNSS (Global Navigation Satellite Systems).
2) Coordinate and time systems used in the GNSS.
3) Almanac data, RINEX (Rreceiver Independent Exchange Format) ephemeredes files, precise ephemeris files.
4) Computing coordinates of the satellites in the GNSS.
5) Error sources in the GNSS.
6) The GNSS code-phase and Doppler observables.
7) Pre-analysis of the observables.
8) Mathematical modeling of the GNSS observables.
9) Observable files in the RINEX, absolute positioning.
10) ASSIGMENT-I Submission: Absolute positioning with cod observables and broadcast ephemeredes files in the RINEX.
11) Relative positioning, single-baseline and multi-baseline solutions.
12) Integer ambiguity resolution and validation.
13) Adjustment of GNSS networks, analysis and testing the results acquired from the GNSS network.
14) Transforming the GNSS results to horizontal or vertical national datum.
15) ASSIGMENT-II Submission: Relative positioning with single (SD) and double (DD) differences cod observables.
16) Final examination

Recommended or Required Reading

1- Orhan KURT (2013), GNSS Verilerinin Değerlendirilmesi, Kocaeli Üniversitesi FBE, Jeodezi ve Jeoinformasyon ABD, Kocaeli. https://orhankurt.jimdo.com/graduate/spring/jjm510-analysis-and-evaluating-of-gnss-data/
2- Hofmann-Wellenhof, B., Lichtenegger, H. ve Collins, J. (1997), GPS Theory and Practice, Fourth Revised Edition, Springer, New York.
3- Leick, A., (1999), GPS Satellite Surveying, Second Edition, Wiley, New York Chichester Brisbane Toronto Singapore.
4- Günter Seeber (2003), Satellite Geodesy, 2nd completely revised and extended edition, Walter de Gruyter Berlin New York, ISBN 3-11-017549-5.
5- Odijk, D. (2003), Fast Precise GPS Positioning in The Presence Ionospheric Delays, PhD Theses, Mathematical Geodesy and Positioning, Faculty of Civil Engineering and Geosiences, Delft University of Tehnology, Netherlands.
6- Teunissen, P.J.G. (1995), The least-squares ambiguity decorrelation adjustment: a method for fast GPS integer ambiguity estimation, Journal of Geodesy (1995) 70:65-82
7- Teunissen, P. J. G., and Kleusberg A. (Eds.), (1998), GPS for Geodesy, ISBN: 3-540-63661-7, Springer-Verlag.
8- Jonge , P.J., and Tiberius, C.C.J.M. (1996), The LAMBDA method for integer ambiguity estimation: implementation aspects, Delft Geodetic Computing Center LGR series, No. 12.
9- X.-W. Chang, X. Yang, T. Zhou (2005), MLAMBDA: a modified LAMBDA method for integer least-squares estimation, Journal of Geodesy, Springer Berlin / Heidelberg, Volume 79, Number 9 / December, 2005, Pages, 552-565
10- Wang, J., (2000), An approach to GLONASS ambiguity resolution, Journal of Geodesy, vol. 74, no 5, pp 421-430.
11- Dong, S., Wu, H., Li, X., Guo, S. and Yang, Q., (2008), The Compass and its time reference system, Metrologia 45 (2008) S47–S50. http://www.iop.org/EJ/article/0026-1394/45/6/S08/met8 6 S08.pdf
12- Açıcı, Ş., Kurt, O., Açık, M., Ve Akyüz, Ö. (2003), GPS Ölçüleri ile Geçerli Konum Bilgilerinin Elde Edilmesi, TMMOB HKMO Mühendislik Ölçmeleri Sempozyumu, İstanbul, 30-31 Ekim 2003, 322-335.
13- Kurt, O., (2003), Gözlemlerinin Simülasyonu, 9. Türkiye Harita Bilimsel ve Teknik Kurultayı, s.399-418, Ankara, 31 Mart-4 Nisan 2003.
14- Kurt, O., 2005, Yapay Uydu Bazlı Alıcılarda Çoklu Frekansın Önemi, 10. Türkiye Harita Bilimsel ve Teknik Kurultayı, 28 Mart-1 Nisan 2005, Ankara.

Planned Learning Activities and Teaching Methods

1) Lecture
2) Question-Answer
3) Question-Answer
4) Self Study
5) Self Study
6) Problem Solving

Assessment Methods and Criteria

Contribution of Quiz to Course Grade	70%
Contribution of Final Examination to Course Grade	30%
Total	100%

Language of Instruction

Turkish

Work Placement(s)

Not Required