摘要
为了提高GPS动态定位的精度和效率,在使用无人直升机装载GPS设备标校舰载三坐标雷达时,可事先依据雷达要标定的参数设计标校航迹。提出了一种基于坐标函数弱约束的模糊度函数法,根据已知的标校航迹,对模糊度函数法(AFM)解算整周模糊度时对坐标函数进行弱约束,完全消除了整周跳变的影响,从而提高了GPS的动态定位的效果。仿真结果表明,所提方法提高了模糊度函数法在动态定位中的精度,若轨道方程存有较大误差(通常dm级精度),采取该判别方法效果会更好。
In order to enhance the precision and efficiency of GPS dynamic positioning, when we use the unmanned helicopter loading GPS devices to calibrate the implementation of shipborne 3d radar, according to the radar calibration parameters, the school track can be designed in advance. The AFM based on coordinate function weak constraint is proposed, use the known school flight track and restrain the coordinate function when using AFM to calculate the whole week ambiguity, so the effect of the precision and efficiency of GPS dynamic positioning has been improved. The simulation experiments show that the precision of AFM in the dynamic positioning algorithm is improved. If the orbit equation has bigger error (the precision is usually dm level), the effect of this discriminant method will be better.
作者
赵芳
张骁
杜亚杰
Zhao Fang;Zhang Xiao;Du Yajie(Naval Aviation University, Yantai 264001, China)
出处
《电子测量技术》
2019年第16期101-104,共4页
Electronic Measurement Technology
