Results 1 to 10 of about 704,600 (271)

The Helmert transformation: a proposal for the problem of post-transformation corrections [PDF]

open access: yesAdvances in Geodesy and Geoinformation, 2023
The geodesy literature seems to offer comprehensive insight into the planar Helmert transformation with Hausbrandt corrections. Specialist literature is mainly devoted to the issues of 3D transformation.
Tadeusz Gargula, Pelagia Gawronek
doaj   +1 more source

Galilean transformation in polar coordinates and Doppler effect

open access: yesResults in Physics, 2021
First, the derivation of the Galilean transformation in polar coordinates from the Galilean transformation in Cartesian coordinates is presented.
Shukri Klinaku
doaj   +1 more source

User defined function for transformation of ellipsoidal coordinates [PDF]

open access: yesPodzemni Radovi, 2014
The topographic plane of the Earth has irregular shape, and for the purpose of mathematical defining, it is to be approximated by rotational ellipsoid. As local geodetic datum, rotational ellipsoids of various sizes are used in the world.
Ganić Aleksandar   +2 more
doaj   +1 more source

Visual Field Coordinate Systems in Visual Neurophysiology [PDF]

open access: yesAnais da Academia Brasileira de Ciências, 2023
In this work, algorithms have been developed to: 1. Compare visual field coordinate data, presented in different representation systems; 2. Determine the distance in degrees between any two points in the visual field; 3.
MARCELO GATTASS, RICARDO GATTASS
doaj   +1 more source

Analysis of Omni-directivity Error of Electromagnetic Field Probe using Isotropic Antenna

open access: yesMeasurement Science Review, 2016
This manuscript analyzes the omni-directivity error of an electromagnetic field (EM) probe and its dependence on frequency. The global directional characteristic of a whole EM probe consists of three independent directional characteristics of EM sensors -
Hartansky Rene
doaj   +1 more source

RESEARCH ON COORDINATE TRANSFORMATION METHOD OF GB-SAR IMAGE SUPPORTED BY 3D LASER SCANNING TECHNOLOGY [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018
In the image plane of GB-SAR, identification of deformation distribution is usually carried out by artificial interpretation. This method requires analysts to have adequate experience of radar imaging and target recognition, otherwise it can easily cause
P. Wang, C. Xing
doaj   +1 more source

Analytical review of software-algorithmic methods of processing of measuring information about geometrical parameters of objects in images

open access: yesТехнічна інженерія, 2023
The paper considers software-algorithmic methods and computational aspects of operations of transformation of coordinates of points in the plane. These procedures include: finding new rectangular coordinates of a vector when rotating it (or a coordinate ...
Yu.O. , L.O. , V.V. , Yu.M. , O.О.
doaj   +1 more source

Kruskal coordinates as canonical variables for Schwarzschild black holes [PDF]

open access: yes, 2000
We derive a transformation from the usual ADM metric-extrinsic curvature variables on the phase space of Schwarzschild black holes, to new canonical variables which have the interpretation of Kruskal coordinates.
D. Louis-Martinez   +4 more
core   +4 more sources

The construction of loci with a cyclical symmetry by the R‐functions

open access: yesMathematical Modelling and Analysis, 2005
This paper deals with the development of the R‐functions method for construction of equations describing a boundary of locus in the case of cyclical symmetry. The proposed method is based on transformations of coordinates and canonical locus.
Yu. S. Semerich
doaj   +1 more source

Accuracy of 3D geodetic coordinates transformation algorithms

open access: yesGeodesy and Cartography, 2012
Accuracy of 3D geodetic coordinates transformed from one coordinate system to another is analysed. Values of transformation parameters are computed by least-squares adjustment method.
Jonas Skeivalas
doaj   +1 more source

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