scope:

The present document applies to radar transceiver equipment intended for the surveillance of airport surface movement traffic. The present document covers the essential requirements of article 3.2 of the R&TTE Directive [i.1].

NOTE 1: An airport Surface Movement Radar (SMR) consists of radar transceiver and an antenna.

The scope of the present document is the radar transceiver without antenna. The prerequisite for this is that by using a circulator at the transceiver-output, the transceiver characteristics remain independent from the connected antenna.

It is assumed that the radar antenna is a separate element and not considered as part of the radio equipment. The antenna is considered to be passive, rotating and waveguide-based.

NOTE 2: Since only passive antennas are used for SMR, it is assumed that the antenna does not deteriorate the radio frequency characteristics of the SMR.

Since only waveguide-based SMR systems are covered, the frequency spectrum that needs to be addressed covers 6,56 GHz to 26 GHz.

NOTE 3: The lower limit of this frequency range of 6,56 GHz is obtained as cut-off frequency of the combination of WR112/R84 taper section and a WR90/R100 Waveguide IEC 60153-2 [6]. The upper limit corresponds to the upper limit stated in ERC/Recommendation 74-01 [5].

The present document covers airport surface movement radar sensors operating in the frequency range of 9 000 MHz to 9 200 MHz or 9 300 MHz to 9 500 MHz.

NOTE 4: According Article 5 of the ITU Radio Regulations [1] 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.

Only radars with a maximum peak power up to 100 kW are covered in the present document.

SMR systems comprising active electronically scanned antennas are not covered by the present document.