17 August 1994 Experiences of combined block adjustment with GPS data
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Proceedings Volume 2357, ISPRS Commission III Symposium: Spatial Information from Digital Photogrammetry and Computer Vision; (1994) https://doi.org/10.1117/12.182895
Event: Spatial Information from Digital Photogrammetry and Computer Vision: ISPRS Commission III Symposium, 1994, Munich, Germany
Abstract
We report results of the combined adjustment of the block test of Lucera (Italy) including GPS aerial control and ground control points. Some material about this test -- namely, the differences between photogrammetrically determined and GPS observed projection centers -- was already presented (Astori, Pinto, 1992) for a small block portion. Now the block adjustment of the whole block with aerial and ground control is described. First, the mathematical model used for the GPS pseudo-observation equations is discussed; the results of some simulations run in order to study the behavior of estimation errors relative to model parameters and ground points, together with their theoretical accuracy, are presented. Then the test is described with attention to GPS data processing and to the reduction of ground and GPS observation to a common reference system. Finally, the results obtained with different sets of additional parameters and ground control configurations are discussed.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
G. Forlani, G. Forlani, L. Pinto, L. Pinto, } "Experiences of combined block adjustment with GPS data", Proc. SPIE 2357, ISPRS Commission III Symposium: Spatial Information from Digital Photogrammetry and Computer Vision, (17 August 1994); doi: 10.1117/12.182895; https://doi.org/10.1117/12.182895
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