基于雷达信标机的舰载雷达对准新方法

A Novel Calibration Method for Ship-Borne Radars Based on the Radar Beacon System

为在船厂有限配套条件下完成舰载雷达的对准工作,提出一种利用雷达信标机模拟雷达目标的对准方法。雷达信标机通过存储转发技术将雷达目标模拟为孤立目标以提高目标的辨识率,通过GPS手段测得信标机的坐标值,经坐标转换、误差修正等真值计算后给出雷达目标真值。实船试验表明,该方法的方位对准精度可达到角分级,距离对准精度可达到亚米级,满足舰载雷达对准的要求,且具有适用性强、精度高、易操作的优点。

This paper proposes a novel calibration method for ship-borne radars under limited supporting conditions,e.g.,in the shipyard.The fundamental concept is to create a simulated radar target with the ra dar beacon system.To do so,an identifiable echo from a virtual isolated radar target is first generated by the radar beacon system via storage-and-forwarding technologies,and the deck coordinates of the target is then obtained through a coordinate conversion and error correction algorithm based on the actual beacon system coordinate provided by GPS.Experimental results show that the proposed method achieves an accu racy of arc-minute in azimuthal calibration and sub-meter for distance alignment.In brief,the method is highly suitable for ship-borne radar calibration with its good adaptability,higher precision and us er-friendly operation.