5 papers
Lunar nutation effect defines the sign of the Earth rotation rate for now, but this may change soon
Oleg Titov
The Earth slowly decelerates in its rotation due to the energy dissipation caused by the interaction with the Moon. This leads to the continuous increasing in the length of the mea…
Quantum-enabled optical large-baseline interferometry: applications, protocols and feasibility
Zixin Huang, Oleg Titov, Mikolaj K. Schmidt +4
Optical Very Long Baseline Interferometry (VLBI) offers the potential for unprecedented angular resolution in both astronomical imaging and precision measurements. Classical approa…
A novel approach for the direct estimation of the instantaneous Earth rotation velocity
Oleg Titov
Very Long Baseline Interferometry (VLBI) measures two standard observables: group delay and fringe frequency (delay rate). While group delay is widely used to estimate a broad rang…
Serial MultiView: an efficient approach to mitigating atmospheric spatial-structure errors for VLBI astrometry
Jingdong Zhang, Bo Zhang, Shuangjing Xu +4
Atmospheric propagation errors are a main constraint on the accuracy of Very Long Baseline Interferometry (VLBI) astrometry. For relative astrometry, differential techniques can mi…
Parallactic delay for geodetic VLBI and non-orthogonality of the fundamental axes
Oleg Titov, Angelina Osetrova
The Gaia optical astrometric mission has measured the precise positions of millions of objects in the sky, including extragalactic sources also observed by Very Long Baseline Inter…