标校塔信号源抗风扰稳定系统设计与实现

外场雷达标校过程中,塔顶信号源在风载荷的干扰下会产生数10 mm的偏摆,这种偏摆对雷达标校精度会产生较大影响。为消除风载荷的影响,设计了基于激光跟踪仪、二维稳定平台等为核心器件的抗风扰稳定系统。该系统通过激光跟踪仪实时测量信号源的位置偏摆量,然后计算出修正值后利用二维稳定平台进行位置补偿,最终实现信号源位置稳定。测试结果显示该系统稳定精度高、响应速度快,可在0.2 s内实现位置稳定精度优于0.5 mm。并可为外场雷达标校提供有利的技术保障。

Design and Implementation of Stable System for the Signal Source of Calibration Tower

In the process of the outfield calibration of radar,the position of the signal on the tower is changed by the wind disturbance within dozens of millimeters.Calibration accuracy of the Rader is influenced by the change of the signal position.A stable system with the laser tracker and two-dimension stable platform as the core is designed to resist the disturbance of the wind.The laser tracker is used to measure the position of the signal in time.Then the two-dimension stable platform is used to stabilize the signal position with the calculated compensation position.Experimental results show that the system has advantages such as high position stabilization accuracy,fast response speed.Great position stabilization accuracy is achieved better than 0.5 mm in 0.2 s.Favorable safeguard for the outfield precision calibration is provided by the stable system.