光学无线电测量信息融合定位方法

Joint Positioning Method for Data Fusion of Photo-Electric Theodolite and Radar

在外弹道测量系统中,将光学设备与无线电设备测量数据进行融合处理,可以提高系统的综合测量水平和设备的使用效率。利用部署在光电经纬仪附近的雷达,建立光电经纬仪和雷达联测定位模型。由全微分公式,根据测站站址差将光电经纬仪的测角信息与雷达的测距信息进行数据融合,可以得到目标相对于雷达的方位角和俯仰角,从而确定目标的空间三维位置;分析了定位模型的主要误差来源和对定位结果的影响。结果表明,光电经纬仪雷达联合定位算法得到的精度优于雷达单台定位精度,联合定位的精度达到2m以内,同时发挥了光电经纬仪和雷达跟踪测量的长处。

In an exterior ballistic measurement system, data fusion for optical measuring equipment and radio exterior trajectory measuring system is very effective to improve the comprehensive precision of target measurement and the utilization rate of instrumentations. According to a joint positioning model with photo-electric theodolite and nearby radar, data fusion of the angular-position data obtained from theodolite and the ranging data obtained from radars will be implemented by using total differential formula and the difference of measuring station sites. It is natural to figure out the targetrs azimuth and pitching angle, and then the target^s three-dimensional position in space. The main error sources of the positioning model are analyzed, as well as their influence for positioning results. The analysis results show that the joint positioning accuracy of photo-electric theodolite and radar has an advantage over the accuracy computed by single radar positioning data. The precision of the joint positioning method is within 2 m, which is an obvious expression of the high angular measurement accuracy of photo-electric theodolite and high range measurement accuracy of radar.