Local Oscillator Concept for the Event Horizon Imager

Autor: Manuel Martín-Neira, Volodymyr Kudriashov

Publikováno v: Journal of Astronomical Instrumentation. 11

The Event Horizon Imager (EHI) is a mission concept conceived to provide a radio image of the surroundings of the event horizons of SgrA* and M87* supermassive black holes with an angular resolution at least an order of magnitude better than that ach

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::49aca3b2d206f6e7e4d7981b650472df
https://doi.org/10.1142/s2251171722500131

Simulations of M87 and Sgr A* Imaging with the Millimetron Space Observatory on near-Earth orbits

Autor: V. A. Ladygin, Volodymyr Kudriashov, A. G. Rudnitskiy, V. I. Kostenko, Yuri Shchekinov, Heino Falcke, Freek Roelofs, A. R. Shaykhutdinov, I. A. Girin, T. de Graauw, A. S. Andrianov, S. F. Likhachev, Andrey M. Baryshev, M. A. Shchurov

Publikováno v: Monthly Notices of the Royal Astronomical Society, 500(4), 4866-4877. Oxford University Press
Monthly Notices of the Royal Astronomical Society, 500, 4866-4877
Monthly Notices of the Royal Astronomical Society, 500, 4, pp. 4866-4877

High resolution imaging of supermassive black holes shadows is a direct way to verify the theory of general relativity at extreme gravity conditions. Very Long Baseline Interferometry (VLBI) observations at millimeter/sub-millimeter wavelengths can p

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::df0664f93798c6196c932abfc1688907
http://arxiv.org/abs/2006.10120

Mapping of Acoustic Noise and Microwave Radiation

Autor: Konstantin Lukin, Volodymyr Kudriashov, Sergii K. Lukin, Artem Yu. Garbar, V. P. Palamarchuk

Publikováno v: Cybernetics and Information Technologies. 16:126-134

Passive sensor systems are attractive for monitoring due to the absence of probing emissions. Two passive systems: an acoustic camera, manufactured by Brüel & Kjær (Sound and Vibration Measurement A/S) and a microwave radiometer are considered in t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fe421740f573374e829d26bf86442d1d
https://doi.org/10.1515/cait-2016-0010

Phase measurement accuracy in noise waveform synthetic aperture radar

Autor: Janusz S. Kulpa, Krzysztof Kulpa, K. A. Lukin, Jacek Misiurewicz, Zbigniew Gajo, Volodymyr Kudriashov, Pavlo Vyplavin, Vladimir Palamarchuk

Publikováno v: IEEE Transactions on Aerospace and Electronic Systems. 51:3364-3373

Detection of small changes in natural formations and human-made constructions is a promising application of synthetic aperture radar (SAR). This paper deals with a specific radar, which is a ground-based SAR using noise waveform. Being fully coherent

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2db1174e38d2e005e4c222c78b32af91
https://doi.org/10.1109/taes.2015.140537

Microphone Array for Non-contact Monitoring of Rolling Bearings

Autor: Volodymyr Kudriashov, Kiril Alexiev, Petia Koprinkova-Hristova, Vladislav Ivanov

Publikováno v: Advanced Computing in Industrial Mathematics ISBN: 9783319495439

A non-contact approach for detection of lubrication loss in ball bearings is described in the paper. An acoustic camera consisting of array of microphones and camera is used for measuring bearing noise. It is found that the lubrication loss increases

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::045549abf5c5f729c71de1a2799d7146
https://doi.org/10.1007/978-3-319-49544-6_9