Abstract

Direct georeferencing of airborne mobile mapping systems is developing with unprecedented speed using GNSS/INS integration. Removal of systematic errors is required for achieving a high accurate georeferenced product in mobile mapping platforms with integrated GNSS/INS sensors. It is crucial to consider the deflection of verticals (DOV) in direct georeferencing due to the recently improved INS sensor accuracy. This study determines the DOV using Sweden’s EGM2008 model and gravity data. The influence of the DOVs on horizontal and vertical coordinates and considering different flight heights is assessed. The results confirm that the calculated DOV components using the EGM2008 model are sufficiently accurate for aerial photogrammetry purposes except for the mountainous areas because the topographic signal is not modeled correctly.

Details

Title
IMPORTANCE OF PRECISE GRAVITY FIELD MODELING IN DIRECT GEOREFERENCING AND AERIAL PHOTOGRAMMETRY: A CASE STUDY FOR SWEDEN
Author
Bagherbandi, M 1 ; Jouybari, A 2 ; Nilfouroushan, F 3 ; Ågren, J 3 

 Faculty of Engineering and Sustainable Development, University of Gävle, Gävle, Sweden; Faculty of Engineering and Sustainable Development, University of Gävle, Gävle, Sweden; Division of Geodesy and Satellite Positioning, Royal Institute of Technology (KTH), Stockholm, Sweden 
 Faculty of Engineering and Sustainable Development, University of Gävle, Gävle, Sweden; Faculty of Engineering and Sustainable Development, University of Gävle, Gävle, Sweden 
 Faculty of Engineering and Sustainable Development, University of Gävle, Gävle, Sweden; Faculty of Engineering and Sustainable Development, University of Gävle, Gävle, Sweden; Department of Geodetic Infrastructure, Geodata Division, Lantmäteriet, Gävle, Sweden 
Pages
15-20
Publication year
2022
Publication date
2022
Publisher
Copernicus GmbH
ISSN
16821750
e-ISSN
21949034
Source type
Conference Paper
Language of publication
English
ProQuest document ID
2671379705
Copyright
© 2022. This work is published under https://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.