The influence of atmospheric precipitations on the operation of a ship’s radar

• Autorzy: Revenko Vitaliy Yu

Identyfikatory

DOI

10.17402/558

• Języki publikacji: EN

Abstrakty

EN

The effects of precipitation of varying intensity on the operation of a ship’s radar are considered. It is shown that during the propagation of the electromagnetic wave emitted by the antenna of a ship’s radar, its energy is absorbed by precipitation. To determine the power loss of an electromagnetic wave due to its absorption by particles of precipitation, the effective absorption area, specific absorption coefficient, and specific effective total scattering area are used. The effective areas of absorption and total scattering depend on the shape of the precipitation particles, their size, state of aggregation, and the length of the electromagnetic wave emitted by the antenna of the ship’s radar. The dependence of the effective absorption area on the particle size of precipitation is obtained at two wavelengths of 3 cm and 10 cm, on which the ship’s radars operate. A decrease in the tracking range of an object tracked by a ship’s radar in the case of rain falling is established compared with the tracking range of an object in clear weather. It is shown that a decrease in the tracking range of an object occurs only with moderate, strong, and very heavy rain. The attenuation of electromagnetic energy in rain with an intensity of 12.5 mm/h at a wavelength of 3 cm is obtained by calculation, which amounted to 24 dB with a length of the falling rain zone of 50 km, as well as with rain with an intensity of 100 mm/h with the same length of the precipitation zone.

Słowa kluczowe

EN

ship’s radar; wavelength; precipitation intensity; radar tracking of the object; effective absorption area; effective total scattering area; specific absorption coefficient; tracking range of the object

• Wydawca: Wydawnictwo Naukowe Akademii Morskiej w Szczecinie
• Czasopismo: Zeszyty Naukowe Akademii Morskiej w Szczecinie
• Rocznik: 2023
• Tom: nr 73 (145)
• Strony: 82--89
• Opis fizyczny: Bibliogr. 10 poz., tab.

Twórcy

autor

Revenko Vitaliy Yu

• Odessa National Maritime University 8 Didrikhson St., 65000, Odessa, Ukraine

• https://orcid.org/0000-0002-0804-7765

Bibliografia

• 1. Eremka, V.D., Kabanov, V.A., Logvinov, Y.F., Mycienko, I.M. & Roenko, A.N., Ed. Razskazovsky, V.B. (2013) Features of the Propagation of Radio Waves over the Sea Surface. Sevastopol: Weber.
• 2. Grábner, M., Pechac, P. & Valtr, P. (2018) Analysis of propagation of electromagnetic waves in atmospheric hydrometeors on low-elevation paths. Radioengineering 27(1), pp. 29–33, doi: 10.13164/RE.2018.0029.
• 3. Knyaz, A.I. (2015) Improving the methods and means of remote observation of navigational objects on the way of the ship. PhD Thesis, Odessa.
• 4. Korban, D.V. (2015) Influence of the atmosphere on the measurement of the range of navigational objects of a ship’s radar. Ship Power Plants: Scientific and Technical Collection 35, pp. 128–136.
• 5. Laws, J.O. & Parsons, D.A. (1943) The relation of raindrop size to intensity. Eos, Transactions American Geophysical Union 24(2), pp. 452–460, doi: 10.1029/TR024i002p00452.
• 6. Norouzian, F., Marchetti, E., Gashinova, M., Hoare, E., Constantinou, C., Gardner, P. & Cherniakov, N. (2019) Rain attenuation at millimeter wave and low-THz frequencies. IEEE Transactions on Antennas and Propagation 68(1), pp. 421–431, doi: 10.1109/TAP.2019.2938735.
• 7. Odedina, M.O. & Afullo, T.J. (2010) Determination of rain attenuation from electromagnetic scattering by spherical raindrops: Theory and experiment. Radio Science 45(1), pp. 1–15, doi: 10.1029/2009RS004192.
• 8. Putyatin, V.G., Gudenko, S.Y., Zaichko, S.I., Korban, D.V. & Knyaz, A.I. (2017) Radar recognition of navigational objects on the ship’s path by the polarization parameters of an electromagnetic wave. Mathematical Machines and Systems 4, pp. 120–128.
• 9. Putyatin, V.G., Korban, D.V. & Knyaz, A.I. (2018) Influence of atmospheric conditions on radar observation of navigational objects. Data Recording, Storage & Processing 20(1), pp. 40–50 (in Russian), doi: 10.35681/1560- 9189.2018.20.1.142901.
• 10. Williams, C.R. (2022) How much attenuation extinguishes mm-wave vertically pointing radar return signals? Remote Sensing 14(6), 1305, doi: 10.3390/rs14061305.

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).