舰载中波导航台动态校验系统设计与技术实现

摘要:

针对舰载中波导航台在舰船与校验飞机相对运动条件下方位校验精度受姿态变化、数据链延迟和天线位置偏差影响的问题，对舰载中波导航台动态飞行校验方法进行了研究；构建由空中系统和舰载系统组成的动态校验系统，采用移动基准站实时动态载波相位差分定位（MB-RTK，mobile-base real time kinematic）获取动态空间基准，结合WGS84/ECEF坐标转换、天线位置补偿、磁方位换算和无线电罗盘误差计算完成校验数据处理；通过进场航道和圆周科目飞行测试获得方位误差数据；测试结果表明，系统能够在动态条件下完成舰载中波导航台方位精度校验，满足服役和定期校验的工程应用要求。针对舰载中波导航台在舰船与校验飞机相对运动条件下方位校验精度受姿态变化、数据链延迟和天线位置偏差影响的问题，对舰载中波导航台动态飞行校验方法进行了研究；构建由空中系统和舰载系统组成的动态校验系统，采用移动基准站实时动态载波相位差分定位（MB-RTK，mobile-base real time kinematic）获取动态空间基准，结合WGS84/ECEF坐标转换、天线位置补偿、磁方位换算和无线电罗盘误差计算完成校验数据处理；通过进场航道和圆周科目飞行测试获得方位误差数据；测试结果表明，系统能够在动态条件下完成舰载中波导航台方位精度校验，满足服役和定期校验的工程应用要求。

Abstract:

To solve the problem that the azimuth calibration accuracy of a shipborne medium-wave navigation station is affected by attitude variation, data-link delay and antenna position deviation under the relative motion between a ship and a calibration aircraft, a dynamic flight calibration method for the shipborne medium-wave navigation station was studied. A dynamic calibration system composed of an airborne subsystem and a shipborne subsystem was designed. Mobile-base real time kinematic (MB-RTK) positioning was used to obtain the dynamic spatial reference, and WGS84/ECEF coordinate transformation, antenna position compensation, magnetic azimuth conversion and radio compass error calculation were combined to process calibration data. Flight tests of the approach-course subject and circular subject were carried out to obtain azimuth error data. The results show that the system can complete azimuth accuracy calibration under dynamic conditions and meet the engineering application requirements of service and periodic calibration.