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EVS-EN 303 347-3 V2.1.1:2021

Ilmaradarid; Raadiospektrile juurdepääsu harmoneeritud standard; Osa 3. Ilmaradar, mis töötab sagedusvahemikus 9300 MHz kuni 9500 MHz (X sagedusribas)

Üldinfo
Kehtiv alates 15.06.2021
Alusdokumendid
ETSI EN 303 347-3 V2.1.1
Tegevusala (ICS grupid)
33 SIDETEHNIKA
Direktiivid või määrused
puuduvad
ETSI standardeid meie e-poest osta ei saa. Neid on võimalik tasuta alla laadida siit.
Standardi ajalugu
Staatus
Kuupäev
Tüüp
Nimetus
15.06.2021
Põhitekst
The present document specifies technical characteristics and methods of measurements for X-band meteorological radar systems intended for the surveillance and classification of hydrometeors with the following characteristics: • Operating in the following frequency range: - 9 300 MHz to 9 500 MHz • Utilizing unmodulated pulses or phase/frequency modulated pulses also known as pulse compression. • The maximum output power (PEP) is not greater than 250 kW (i.e. 84 dBm). • The transceiver antenna connection and its feeding RF line use a hollow metallic rectangular waveguide. • The antenna rotates and can be changed in elevation. • The used waveguide is WR90/WG16 waveguide according to IEC 60153-2. • The antenna feed is waveguide based and the antenna is passive. • The orientation of the transmitted field from the antenna can be vertical or horizontal orientated or it can be both simultaneously. • At the transceiver output an RF circulator is used. NOTE 1: Since at the transceiver output an RF circulator is used, it is assumed that the transceiver characteristics remain independent from the antenna. NOTE 2: According to provision 5.475B of the ITU Radio Regulations, ground-based radars used for meteorological purposes in the band 9 300 MHz to 9 500 MHz have priority over other radiolocation uses. NOTE 3: Further technical and operational characteristics of meteorological radar systems can be found in Recommendation ITU-R M.1849-1. NOTE 4: The relationship between the present document and essential requirements of article 3.2 of Directive 2014/53/EU is given in Annex A.
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