Results 11 to 20 of about 1,840,232 (265)

GNSS Precise Relative Positioning Using A Priori Relative Position in a GNSS Harsh Environment [PDF]

Sensors, 2021
To enable Global Navigation Satellite System (GNSS)-based precise relative positioning, real-time kinematic (RTK) systems have been widely used. However, an RTK system often suffers from a wrong integer ambiguity fix in the GNSS carrier phase measurements and may take a long initialization time over several minutes, particularly when the number of ...
openaire   +3 more sources

Precise Point Positioning Technique Versus Relative Positioning

Baltic Surveying, 2020
Precise point positioning is a GNSS based positioning method that is known to regaining more precise information about major systematical errors in its functional model. This method is seen as an advanced version of the conventional absolute positioning method that is able to offer higher accuracy of the estimate parameter.
Stepan Savchuk, Janusz Cwiklak, Alina Khoptar   +2 more
openaire   +1 more source

Precise relative earthquake location using surface waves [PDF]

Journal of Geophysical Research: Solid Earth, 2013
AbstractEarthquake locations provide a fundamental tool for seismological investigations. While dense seismic networks can provide robust locations, accuracy and precision of these locations suffer outside dense networks. This is particularly true in offshore areas, where location analysis relies heavily on distant seismic observations.
K. Michael Cleveland, Charles J. Ammon
openaire   +1 more source

Forbidden M1 and E2 transitions in monovalent atoms and ions [PDF]

, 2017
We carried out a systematic high-precision relativistic study of the forbidden magnetic-dipole and electric-quadrupole transitions in Ca+, Rb, Sr+, Cs, Ba+, Fr, Ra+, Ac2+, and Th3+.
Johnson, W. R., Safronova, M. S., Safronova, U. I.   +2 more
core   +3 more sources

Precision Astrometry of a Sample of Speckle Binaries and Multiples with the Adaptive Optics Facilities at the Hale and Keck II Telescopes [PDF]

, 2009
Using the adaptive optics facilities at the 200-in Hale and 10-m Keck II, we observed in the near infrared a sample of 12 binary and multiple stars and one open cluster. We used the near diffraction limited images of these systems to measure the relative
Al-Shukri, Barstow, Benedict, Benedict, Cameron, Cutri, Delfosse, Dommanget, Dvorak, Eggenberger, Eisenhauer, Fischer, Han, Harmanec, Hayward, Heintz, Henry, He��miniak, Holman, J. Eisner, Jenkins, K. G. He��miniak, Lane, Launhardt, Law, Lissauer, M. Konacki, Metchev, Metchev, Mugrauer, Muterspaugh, Nelson, Neuh��user, Oppenheimer, Perryman, Pravdo, Pravdo, Raghavan, Reid, Roe, Roeser, R��ll, S. R. Kulkarni, Sahlmann, Simon, Simons, Stetson, S��derhjelm, Thompson, Unwin, Zapatero Osorio   +50 more
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Study of the one-way speed of light anisotropy with particle beams [PDF]

, 2017
Concepts of high precision studies of the one-way speed of light anisotropy are discussed. The high energy particle beam allows measurement of a one-way speed of light anisotropy (SOLA) via analysis of the beam momentum variation with sidereal phase ...
Wojtsekhowski, B.
core   +2 more sources

Absolute kinematics of radio source components in the complete S5 polar cap sample. III. First wide-field high-precision astrometry at 15.4 GHz [PDF]

, 2007
We report on the first wide-field, high-precision astrometric analysis of the 13 extragalactic radio sources of the complete S5 polar cap sample at 15.4 GHz. We describe new algorithms developed to enable the use of differenced phase delays in wide-field
Beasley, Blandford, Boehm, Chao, Charlot, E. Ros, Eckart, Fey, Guirado, I. Martí-Vidal, J. C. Guirado, J. M. Marcaide, Kühr, M. A. Pérez-Torres, Marcaide, Pradel, Pérez-Torres, Pérez-Torres, Ros, Ros, Ros, Saastamoinen, Shapiro, Shepherd, Treuhaft   +24 more
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Precision Measurement of the 29Si, 33S, and 36Cl Binding Energies

, 2005
The binding energies of 29Si, 33S, and 36Cl have been measured with a relative uncertainty $< 0.59 \times 10^{-6}$ using a flat-crystal spectrometer. The unique features of these measurements are 1) nearly perfect crystals whose lattice spacing is known ...
C. Doll, D. Windisch, E. G. Kessler, E. G. Kessler Jr., H. G. Börner, J. F. Nye, J. W. Berthold III, M. Jentschel, M. S. Dewey, P. Mutti, R. B. Firestone, R. D. Deslattes, R. D. Deslattes, R. D. Deslattes   +13 more
core   +1 more source

Optimal measurements for quantum spatial superresolution [PDF]

, 2018
We construct optimal measurements, achieving the ultimate precision predicted by quantum theory, for the simultaneous estimation of centroid, separation, and relative intensities of two incoherent point sources using a linear optical system.
Grover, J., Hradil, Z., Koutny, D., Krzic, A., Rehacek, J., Sanchez-Soto, L. L.   +5 more
core   +2 more sources

The Influence of Higher Fock States in Light-Cone Gauge Theories [PDF]

, 1998
In the light-cone Fock state expansion of gauge theories, the influence of non-valence states may be significant in precision non-perturbative calculations. In two-dimensional gauge theories, it is shown how these states modify the behaviour of the light-
A. H. Mueller, F. Antonuccio, G. ’t Hooft, H. Bergknoff, H. C. Pauli, H. C. Pauli, K. G. Wilson, K. Harada, K. Hornbostel, M. Burkardt, R. J. Perry, S. Coleman, S. Dalley, S. Dalley, S. Dalley, S. J. Brodsky, W. A. Bardeen, Y. Mo   +17 more
core   +2 more sources