基于雷达测距的飞行器交会对接误差补偿控制技术

Error Compensation Control Technology of Aircraft Rendezvous and Docking Based on Radar Ranging

为解决由视线倾角、视线偏角过大造成的飞行器对接存在误差的问题,实现飞行器交会轨迹的精准对接,提出基于雷达测距的飞行器交会对接误差补偿控制技术;建立空间参考坐标系,根据轨道根数计算结果,推导动力学状态方程,实现对飞行器交会对接过程中的动力学作用分析;按照雷达测距原理,计算飞行器的理论飞行时长及雷达装置作用距离,再联合相关参数指标,确定精度极限的取值范围,实现基于雷达测距的对接误差控制;在三坐标测量机结构模型中,定义飞行位姿拟合条件,再根据位姿误差求解结果,实现对误差参数的补偿修正处理,完成基于雷达测距的飞行器交会对接误差补偿控制方法的设计;对比实验结果表明,应用所提方法可以同时将视线倾角、视线偏角的取值控制在0~45.0°的范围之内,能够较好地解决飞行器错误对接的问题,符合精准对接飞行器交会轨迹的实际应用需求。

To solve the problem that the excessive inclination and deviation angels of line of sight lead to the errors in spacecraft docking,it realizes the accurate docking of aircraft rendezvous trajectories,a radar ranging-based spacecraft docking error compensation control technology is proposed.This paper establishes a spatial reference coordinate system,derives the dynamic state equation based on the orbit elements calculation results,analyzes the dynamic effects during the spacecraft docking process,calculates the theoretical flight time and range of the radar according to the radar ranging principle,determines the accuracy in combination with the relevant parameters,and achieves the docking error based on the radar ranging.In the three-coordinate measuring machine structure model,the flight posture fitting conditions are defined,and based on the posture error solution,the error parameters are compensated and corrected to complete the spacecraft docking error compensation control method based on the radar ranging.Comparative experimental results show that the proposed method can simultaneously control the inclination or deviation angles within the range of 0~45.0°,which can effectively solve the spacecraft misalignment and meet the practical application requirements of precise docking of spacecraft rendezvous trajectories.