Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLI-B1, 1221-1226, 2016
http://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XLI-B1/1221/2016/
doi:10.5194/isprs-archives-XLI-B1-1221-2016
 
12 Oct 2016
THEORETICAL ANALYSIS OF POSITIONAL UNCERTAINTY IN DIRECT GEOREFERENCING
Ali Coskun Kiraci1 and Gonul Toz2 1Photogrammetry Department, General Command of Mapping, Ankara, Turkey
2ITU, Civil Engineering Faculty, 80626 Maslak Istanbul, Turkey
Keywords: GNSS/INS integration, exterior orientation, error propagation, positional uncertainty, direct georeferencing, aero-triangulation Abstract. GNSS/INS system composed of Global Navigation Satellite System and Inertial Navigation System together can provide orientation parameters directly by the observations collected during the flight. Thus orientation parameters can be obtained by GNSS/INS integration process without any need for aero triangulation after the flight. In general, positional uncertainty can be estimated with known coordinates of Ground Control Points (GCP) which require field works such as marker construction and GNSS measurement leading additional cost to the project. Here the question arises what should be the theoretical uncertainty of point coordinates depending on the uncertainties of orientation parameters. In this study the contribution of each orientation parameter on positional uncertainty is examined and theoretical positional uncertainty is computed without GCP measurement for direct georeferencing using a graphical user interface developed in MATLAB.
Conference paper (PDF, 1842 KB)


Citation: Kiraci, A. C. and Toz, G.: THEORETICAL ANALYSIS OF POSITIONAL UNCERTAINTY IN DIRECT GEOREFERENCING, Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLI-B1, 1221-1226, doi:10.5194/isprs-archives-XLI-B1-1221-2016, 2016.

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