Results 151 to 160 of about 56,169 (259)

Differential Very Long Baseline Interferometry (delta VLBI) spacecraft tracking system demonstration. Part 2: Data acquisition and processing [PDF]

A set of experiments in the use of Differential Very Long Baseline Interferometry (delta VLBI) for spacecraft navigation were completed. Data using both Voyager spacecraft and a single quasar were acquired during the Jupiter encounter time period.
Callahan, P. S., Christensen, C. S., Donivan, F. F., Moultrie, B., Wu, S. C.   +4 more
core   +1 more source

Time frequency requirements for radio interferometric earth physics [PDF]

Two systems of VLBI (Very Long Baseline Interferometry) are now applicable to earth physics: an intercontinental baseline system using antennas of the NASA Deep Space Network, now observing at one-month intervals to determine UTI for spacecraft ...
Fliegel, H. F., Thomas, J. B.
core   +1 more source

Radio-optical scrutiny of the central engine in compact AGN

, 2004
We combine Very-Long-Baseline Interferometry (VLBI) data for $\sim100$ active galactic nuclei (AGN) available from the Very Large Baseline Array (VLBA) 2 cm imaging survey and optical spectroscopy to investigate the relationships in the emission-line ...
Arshakian, T. G., Chavushyan, V. H., Kadler, M., Ros, E., Zensus, J. A.   +4 more
core  

Viscoelastic deformation near active plate boundaries [PDF]

Very Long Baseline Interferometry (VLBI) now has the capacity to monitor geodetic positions with precisions of a few 1 mm over continental baselines. For tectonic applications, one of the major products of the VLBI program is the determination of the ...
Ward, Steven N.
core   +1 more source

THE SECOND REALIZATION OF THE INTERNATIONAL CELESTIAL REFERENCE FRAME BY VERY LONG BASELINE INTERFEROMETRY

, 2015
Chopo Ma, E. F. Arias, G. Bianco, D. Boboltz, S. Bolotin, P. Charlot, G. Engelhardt, A. Fey, R. Gaume, A. Gontier, R. Heinkelmann, C. Jacobs, S. Kurdubov, S. Lambert, Z. Malkin, A. Nothnagel, L. Petrov, E. Skurikhina, J. Sokolova, J. Souchay, O. Sovers, V. Tesmer, O. Titov, Guizhen Wang, V. Zharov, C. Barache, S. Böckmann, A. Collioud, J. Gipson, D. Gordon, S. Lytvyn, D. MacMillan, R. Ojha   +32 more
semanticscholar   +1 more source

Very Long Baseline Interferometry (VLBI) [PDF]

Europhysics News, 1988
openaire   +1 more source

Phase versus delay in geodetic VLBI [PDF]

The conditions for the applicability of the phase observable in very long baseline interferometry are discussed and examples of adequate observation programs are given.
Campbell, J.
core   +1 more source

Temporal Coherence of Single Photons Emitted by Hexagonal Boron Nitride Defects at Room Temperature. [PDF]

ACS Photonics
Martínez-Pons JV, Kim SK, Behrens M, Izquierdo-Molina A, Menendez Rua A, Paçal S, Ateş S, Viña L, Antón-Solanas C.   +8 more
europepmc   +1 more source

White Rabbit in radio interferometry. [PDF]

Exp Astron (Dordr)
Boven EP, Koelemeij JCJ, van Tour C, Smets R, González Escudero R, van Langevelde HJ.   +5 more
europepmc   +1 more source

Applications of radio interferometry to navigation [PDF]

Radio astronomy experiments have demonstrated the feasibility of making precise position measurements using interferometry techniques. The application of this method to navigation and marine geodesy is discussed, and comparisons are made with existing ...
Hulburt, E. O., Johnston, K. J., Knowles, S. H.   +2 more
core   +1 more source