远程防空雷达可采用各种技术来达到三维覆盖,这些技术包括:发射采用扇形波束来覆盖整个仰角范围;接收使用多个笔形波束;在仰角方向上,使用单个笔形波束来作步进扫描;上述两者的结合.另一种技术是运用扫描频率发射脉冲和频率敏感天线,在发射脉冲期间用笔形波束在仰角方向上连续扫描,测出回波脉冲频率就可获得目标的仰角数据.这种频率扫描技术已经成功地应用于普莱赛公司的AR三维 Remote air defense radars can employ a variety of techniques to achieve three-dimensional coverage. These techniques include the use of fan beams to cover the entire elevation range, the reception of multiple pencil beams, and the use of a single pencil beam for elevation scanning in the elevation direction. A combination of the two.Another technique is to use a sweep frequency transmit pulse and frequency sensitive antenna to scan the beam continuously in the elevation direction with a pencil beam during the transmit pulse to obtain the target elevation angle data for the echo pulse frequency Frequency scanning technology has been successfully applied to PRSAI AR three-dimensional