Results 21 to 30 of about 3,797 (186)
Significance of application of the nine parametric coordinate transformation where local state network is not enough reliable [PDF]
Tehnika, 2016 The most commonly used method for establishing the mathematical basis of surveying and spatial data collection is the method of Global Navigation Satellite Positioning System (GNSS).
Ristić Kornelija T. +2 more
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Transformation parameters between UCS-2000 and WGS-84
Geodesy and Cartography, 2018 According to the Order of the Ministry of Agrarian Policy of Ukraine, published in 2016, about the procedure for using the national coordinate system UCS-2000, this was the first time officially presented parameters of the Helmert transformation from the
Elena Novikova +4 more
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Orbit fitting based on Helmert transformation
Geo-spatial Information Science, 2009 Orbit fitting is used in many GPS applications. For example, in Precise Point Positioning (PPP), GPS orbits (SP3 orbits) are normally retrieved either from IGS or from one of its Analysis Centers (ACs) with 15 minutes’ sampling, which is much bigger than the normal observation sampling.
Chen, J., Wang, J.
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Estimating integrated water vapor trends from VLBI, GPS,and numerical weather models: sensitivity totropospheric parameterization [PDF]
, 2018 ©2018. American Geophysical UnionIn this study, we estimate integrated water vapor (IWV) trends from very long baseline interferometry (VLBI) and global navigation satellite systems (GNSS) data analysis, as well as from numerical weather models (NWMs ...
Balidakis, Kyriakos +6 more
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On the extension of Helmert transform [PDF]
Advances in Astronomy and Space Physics, 2014 The article deals with the method of comparison of the coordinate systems used by two quite different scientific disciplines: stellar astronomy and the geodesy. Geodesic Helmert transform is analysed along with a series of stellar astronomy kinematic models: Kovalsky-Airy, Lindbladt-Oort and Ogorodnikov-Milne.
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Algorithms for geodesics [PDF]
, 2012 Algorithms for the computation of geodesics on an ellipsoid of revolution are given. These provide accurate, robust, and fast solutions to the direct and inverse geodesic problems and they allow differential and integral properties of geodesics to be ...
BR Bowring +6 more
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Least Squares Collocation Alternative to Helmert’s Transformation with Hausbrandt’s Post – Transformation Correction [PDF]
Reports on Geodesy and Geoinformatics, 2015 Abstract The paper presents a least squares collocation - based alternative to Helmert’s transformation with Hausbrandt’s post – transformation correction. The least squares collocation is used as an exact predictor i.e. it honors the data, thus the problem of zero residuals on transformation control points is overcome and zero ...
Ligas Marcin, Banasik Piotr
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The co-occurrence of social adversities in early adolescence and their relationship to cognitive outcomes later in development. [PDF]
JCPP AdvUsing latent profile analysis, we investigated the co‐occurrence of adverse experiences in two UK cohorts (UKHLS and ALSPAC, total N > 15,000). We identified four profiles in both cohorts: low adversity, peer difficulties, sibling bullying, and poly‐adversity. 17%–22% of participants reported experiencing several social adversities.
Kwok MS, Inman A, Bates KE, Fuhrmann D.
europepmc +2 more sources
Journal of Geodetic Science, 2023 The transformation of coordinates between different geodetic datums has been a common practice within the geospatial profession. Relating different geodetic datums mostly involves the use of conformal transformation techniques, which could produce ...
Kheloufi Noureddine, Dehni Abdellatif
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Satellite Navigation, 2023 Previous studies have not evaluated the systematic errors implied in the third generation of BeiDou-3 Navigation Satellite System (BDS-3) broadcast ephemeris.
Min Li +4 more
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