Advanced Surface Movement Guidance and Control System (A-SMGCS); Part 6: Harmonized EN covering the essential requirements of article 3.2 of the R&TTE Directive for deployed surface movement radar sensors; Sub-part 1: X-band sensors using pulsed signals a
The present document applies to X-band radar sensors intended for the surveillance of airport surface movement traffic with the following characteristics: Utilizing modulated or unmodulated pulses. Transmitter Peak Envelope Power up to 100 kW. The transceiver-antenna connection is using a hollow metallic rectangular waveguide. The antenna is rotating@ waveguide- based and passive. At the transceiver output an RF-circulator is used. The present document covers only the essential requirements of article 3.2 of the RTTE Directive [i.1]. NOTE 1: Since transceiver and antenna are hollow metallic rectangular waveguide based the frequency range for measurements that needs to be addressed covers 6@56 GHz to 26 GHz The lower limit of this frequency range is obtained as cut-off frequency of the combination of WR112/R84 taper section and a WR90/R100 Waveguide IEC 60153-2 [i.3]. The upper limit corresponds to the upper limit stated in ERC/Recommendation 74-01 [i.5]. NOTE 2: Since at the transceiver output an RF circulator is used@ it is assumed that the transceiver characteristics remain independent from the antenna. NOTE 3: According Article 5 of the ITU Radio Regulations [i.6] the band 9 000 MHz to 9 200 MHz is allocated to the Aeronautical Radionavigation Service on a primary basis and the band 9 300 MHz to 9 500 MHz is allocated to the Aeronautical Radionavigation Service on a secondary basis.