scope:

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 R&TTE 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.