Research on Key Technologies of Antenna Pedestal of Surface Monitoring Radar

The surface monitoring radar must be able to carry out fast real-time monitoring of targets within the airport. Its data rate is usually less than or equal to 1 s. To meet the requirements, the antenna pedestal must be able to realize high speed horizontal rotation (usually its rotation speed is 60 r/min). The conventional ATC radar antenna pedestal, however, cannot meet the requirements (usually its rotation speed is 6 r/min to 15 r/min). A highly reliable surface monitoring radar antenna pedestal, whose horizontal rotation speed is very high and whose running state can be monitored remotely, is designed based on the key technologies including drive design with double motor connected directly with worm gear and worm reducer, dynamic balance design of the high speed rotating antenna, the oil lubrication baptism of high speed transmission system and non-contact rotating seal design and the auxiliary designs including remote monitoring design of the oil level & temperature in the antenna pedestal, remote monitoring design of the antenna pedestal horizontal position and remote control design of the oil temperature. This result has been applied to the airport surface monitoring radar with trouble-free running time of more than 17 520 h.