Zobrazeno 1 - 10
of 9 477
pro vyhledávání: '"radio telescope"'
Publikováno v:
Radio Physics and Radio Astronomy, Vol 29, Iss 3, Pp 229-235 (2024)
Subject and Purpose. The current research projects in astrophysics are in need of high-sensitivity scientific instruments. The accuracy and sensitivity of observations can be enhanced through the use of large radio telescopes and other radio frequenc
Externí odkaz:
https://doaj.org/article/ac94451daacb44fc9dc35969520fc55d
Publikováno v:
Heliyon, Vol 10, Iss 18, Pp e37892- (2024)
Jingdong 120-meter radio telescope (JRT) is poised to become the world's largest single-aperture fully steerable medium-low frequency radio telescope. However, like other large-aperture radio telescopes, the JRT is vulnerable to wind loads, which can
Externí odkaz:
https://doaj.org/article/c28ab4591dac47a692314342a437962d
Publikováno v:
Radio Physics and Radio Astronomy, Vol 29, Iss 1, Pp 003-014 (2024)
Subject and Purpose. The writers aim at developing and testing a new method of interference mitigation, proceeding from the example of radio emissions from Jupiter. Its effectiveness is compared with the results of other workers, equally relating to
Externí odkaz:
https://doaj.org/article/0f95e4c3c74847639ddbd94a82597c0d
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 11 (2024)
Xinjiang Qitai is constructing a 110-m fully steerable radio telescope (QiTai radio Telescope [QTT]) equipped with a phased array feeds (PAF) receiver, which will install the focal plane operating from 0.7 to 1.8 GHz. In this article, we introduce a
Externí odkaz:
https://doaj.org/article/b956bedbeefe47ce8b7779e5b1337581
Autor:
Luca Schirru, Francesco Gaudiomonte
Publikováno v:
Sensors, Vol 24, Iss 19, p 6481 (2024)
Radio frequency interference (RFI) analysis is crucial for ensuring the proper functioning of a radio telescope and the quality of astronomical observations, as human-generated interference can compromise scientific data collection. The aim of this s
Externí odkaz:
https://doaj.org/article/17f3d5c5d399456aa86dd47a78300dff
Autor:
Zina Fadel Kahdim, Kamal M. Abood
Publikováno v:
Al-Mustansiriyah Journal of Science, Vol 35, Iss 1 (2024)
Radiofrequency interference (RFI) describes the weakening of radio astronomy transmissions caused by man-made radio signal noise in radio telescope observation indicates the level of radio frequency noise in the sky at all times, regardless of any as
Externí odkaz:
https://doaj.org/article/6a499aeb25714703963a4069ccee0381
Publikováno v:
Radio Physics and Radio Astronomy, Vol 28, Iss 3, Pp 201-211 (2023)
Subject and Purpose. Since decameter carbon radio recombination lines (RRLs) were detected for the first time more than forty years ago, they have significantly extended our knowledge of the physics, kinematics and chemistry of the cold rarefied inte
Externí odkaz:
https://doaj.org/article/4d6e34e164744ebe93a3366b5bb0e995
Publikováno v:
Sensors, Vol 24, Iss 14, p 4723 (2024)
The next generation phased array radio telescopes, such as the Square Kilometre Array (SKA) low frequency aperture array, suffer from RF interference (RFI) because of the large field of view of antenna element. The classical station beamformer used i
Externí odkaz:
https://doaj.org/article/cc438302735d4424918abb0f8cb88054
Publikováno v:
Machines, Vol 12, Iss 7, p 448 (2024)
Pointing accuracy is a crucial performance index for a fully steerable large-aperture radio telescope and is subject to external and internal disturbances. Improvement of the antenna’s servo control performance is meaningful for pointing, especiall
Externí odkaz:
https://doaj.org/article/a028f6dd4d0d4f8b9945a0b3951dc48c
Publikováno v:
Radio Physics and Radio Astronomy, Vol 28, Iss 2, Pp 117-129 (2023)
Subject and Purpose. The sporadic radio emissions coming from the Sun in a broad frequency range contain a lot of important information concerning the solar corona, parameters of the radio frequency sources therein, and the parameter variations resul
Externí odkaz:
https://doaj.org/article/a621312b6d754d0b9f86c8264a01eef1