3 papers
astro-ph.IM2025
A unified model of feed rotation in radio telescopes and GNSS antennas
Joe Skeens, Johnathan York, Leonid Petrov +3
We describe a model that accounts for the phase rotation that occurs when a receiver or transmitter changes orientation while observing or emitting circularly polarized electromagn…
physics.geo-ph2024
Extracting Geodetic Data from GNSS-VLBI Co-Observation
Joe Skeens, Johnathan York, Leonid Petrov +3
We have been developing a novel interferometer formed directly between a Very Long Baseline Interferometry (VLBI) radio telescope and a Global Navigation Satellite Systems (GNSS) a…
eess.SY2024
Leveraging Gated Recurrent Units for Iterative Online Precise Attitude Control for Geodetic Missions
Vrushabh Zinage, Shrenik Zinage, Srinivas Bettadpur +1
In this paper, we consider the problem of precise attitude control for geodetic missions, such as the GRACE Follow-on (GRACE-FO) mission. Traditional and well-established control m…