基于多源信息融合的空中运动目标定位技术

Technology of Moving Object Determination of Spatial Positon Based on Multi-Source Information Fusion

针对试验中如何测量飞机上某相对运动构件的空间三维坐标的问题,提出了基于飞机惯导数据方法和基于机载视频图像方法。基于飞机惯导数据方法利用经纬仪跟踪飞机上相对运动构件,获取它的方位角A和俯仰角E,并利用飞机的轨迹数据与惯导数据得到运动构件的轨迹,该方法适用于飞机进近段运动构件的轨迹测量;基于机载视频图像方法同样利用光电经纬仪跟踪相对运动构件获取A与E,并综合机载相机视频数据计算出运动构件的轨迹,它适用于飞机道面段运动构件的轨迹测量;最后,提出了一种新的数据融合方法解决了轨迹的平滑问题,实际飞行试验表明了该方法的实用性和有效性。

In order to measure spatial 3-D of relatively moving part of the plane in the flying test, two methods are proposed. The first is based on the plane inertial data, which is fit to approach of the flying test. The second is based on airborne video, which is fit to airport pavement of the flying test. In the two methods, photoelectric theodolite is used to get the relatively moving part azimuth angle A and pitching angle E, and then combining with the trajectory data of a retro-refleetor on the plane, plane inertial data, plane airborne video data to get the trajectory. Lastly, a new data fusion method is put forword to meet the need of trajectory smoothness. It is prac- tical and valid through experimentation.