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Registration Number

0221U101437, 0120U101334 , R & D reports

Title

Development of low-frequency radio-astronomical elements and systems for investigating objects of the Universe from the Moon. Stage 3: Prototyping of a very low-frequency antenna interferometer for the lunar radio telescope.

Head

Bubnov Igor M., Кандидат фізико-математичних наук

Registration Date

21-01-2021

Organization

Institute of Radio Astronomy of the NAS of Ukraine

Description

 Object of the study – Research and development of ultra-low-frequency active antenna for interferometer of the lunar radio telescope. Aim of the project – Increasing of sensitivity, resolution, analysis frequency band, reliability of radio astronomy antennas and systems for low-frequency studies of solar radio emission, interplanetary medium, planets, pulsars, supernova remnants, etc. from the Moon farside jointly with the world-biggest upgraded Ukrainian low-frequency radio telescopes UTR-2, URAN, GURT and space missions STEREO, WIND, Juno, Solar Orbiter and FarSide Explorer. Results and their novelty – Parameters of active antenna which is used as an element of the interferometer of the Moon-based ratio telescope were studied for various heights of antenna suspension above the surface of imperfect ground. A numerical model of the active antenna was created. A comparative analysis of parameters obtained with experiment and modelling for the active antenna was done. The analysis has shown that the antenna suspension height above the imperfect ground does not affect dramatically the sensitivity of the antenna. It means that it is possible to put the antenna arms directly on the ground and use them as a support structure. The suggested idea allows considerably simplifying of using these antennas for space base on the Moon. An ultra-low-frequency interferometer of two antennas for future lunar radio telescope was built and tested in the conditions rather close to the expected on the Moon. Potential capabilities of the interferometer to study radio emission of the Sun, Jupiter, pulsars and other radio sources of the Universe at the lowest frequencies were determined.

Product Description

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Yerin Serge M
Bortsov Viktor V.
Brazhenko Anatoliy I.
Zakharenko Vyacheslav V.
Kalinichenko Mykola M.
Konovalenko Oleksandr O.
Korolev Olexy M.
Kuhai Nataliia V.
Lytvynenko Oleg O
Reznichenko Oleksandr M.
Sidorchuk Michael A
Stepkin Sergiy V
Tokarsky Petro L.