船载X频段微波统一测控系统快速校相方法

A Fast Phase Calibration Method of the Shipboard Unified X-band System

双通道单脉冲跟踪接收机必须通过校相保持和、差信道相位一致性,才能实现天线对目标的正常跟踪。快速校相已在陆地测控站的卫星长管任务中得到广泛应用,方法具有校相流程简单快捷等优点,但由于受到船摇的影响以及引导精度的限制,方法必须改进后才能应用到船载X频段微波统一测控系统。提出"粗校+精校"的多次快速校相方法,可有效解决船载窄波束天线海上角度标校的难题,提高船载测控设备自动化标校水平。

To facilitate the antenna to track target automatically, the monopulse dual-channel tracking receiver must calibrate the phase inconsistency between the sum and difference channels. A fast phase calibration method has already been proposed, which is only applicable in ground tracking stations. This paper presents a fast phase calibration method which is iterative and includes rough calibration process and fine calibration process. The proposed method in this paper can effectively overcome the influences of ship rolling and limited accuracy of guide data, and it paves the way for the application of shipboard narrow-beam antenna.