The present document specifies technical characteristics and methods of measurements for monostatic X-band radar sensors intended for the surveillance of airport surface movement traffic with the following characteristics: - Operating in one or both of the following frequency ranges: - 9 000 MHz to 9 200 MHz and 9 300 MHz to 9 500 MHz 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.