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pro vyhledávání: '"JC Iliffe"'
Autor:
JC Iliffe
Publikováno v:
Cartography and Geographic Information Science. 45:270-283
Map projections are an essential component of coordinate systems used in applications such as surveying, topographic mapping, and engineering, and care needs to be taken to select ones that minimize distortion for each case. This article explores the
Publikováno v:
Survey Review. 45:254-262
The Vertical Offshore Reference Frames (VORF) project is described, with a summary of the methodology and an explanation of the data sets used. The latter include satellite altimetry, tidal and geoid models, long and short term tide gauge data, and s
Publikováno v:
Marine Geodesy. 36:123-137
The UK Hydrographic Office (UKHO)-sponsored Vertical Offshore Reference Frames (VORF) project aims to develop tidal level transformation models that are referenced to the GRS80 ellipsoid and thus compatible with GNSS positioning; in particular, heigh
Autor:
JC Iliffe, John B. Murray
Publikováno v:
Geological Society, London, Special Publications. 356:21-41
The surface of Phobos, the 27×22×18 km inner moon of Mars, is dominated by several families of parallel grooves. At least seven different groups of hypotheses have been advanced to explain their origin, but studies have always been limited by the f
Publikováno v:
Journal of Atmospheric and Oceanic Technology. 27:605-613
As part of the U.K. Hydrographic Office (UKHO)-sponsored Vertical Offshore Reference Frames (VORF) project, a high-resolution model of lowest astronomical tide (LAT) with respect to mean sea level has been developed for U.K.–Irish waters. In offsho
Publikováno v:
Marine Geodesy. 30:271-296
As part of the Vertical Offshore Reference Frames (VORF) project sponsored by the U. K. Hydrographic Office, a new model for Sea Surface Topography (SST) around the British Isles has been developed. For offshore areas (greater than 30 km from the coa
Publikováno v:
Survey Review. 39:90-99
Surveying on large engineering projects such as railway routes presents particular problems in terms of the coordinate system to be used, since they generally extend beyond the limit of an acceptable site grid. This paper presents a method for tailor
Publikováno v:
Technical University of Denmark Orbit
The background to the recent computation of a new vertical datum model for the British Isles (OSGM02) is described After giving a brief description of the computational techniques and the data sets used for the derivation of the gravimetric geoid, th
Autor:
S Lannelongue, JC Iliffe, K. Sauer, Washington Y. Ochieng, KF Sheridan, N Ammour, K Petit, Paul Cross
Publikováno v:
Journal of Navigation. 54:185-197
This paper presents the results of a research project that investigated the potential benefits of a combined Galileo/GPS navigation system. The research addressed in detail the two key required navigation performance (RNP) parameters of accuracy and
Publikováno v:
Survey Review. 35:320-328
A set of control points observed as part of the Channel Tunnel Rail Link project is used to derive an empirical model of the geoid from the GPS and levelling observations made to each point. This is used to test the accuracy of the global geoid model