CAJ | 학술논문

为综合利用导弹飞行试验中的遥外测数据实现弹道重构,提出了一种基于UKF的弹道重构方法。分别采用遥测数据与外测数据建立了系统状态方程与观测方程,采用UKF法对弹道状态进行最优估计。通过数值仿真对比分析了UKF法与传统EKF的误差特性以及重构误差对三类误差源的敏感度。结果表明UKF法的误差收敛速度、稳定性及精度均优于EKF法,UKF法的位置与速度误差对外测数据误差较为敏感,而姿态误差对初始姿态误差较为敏感。
위종합이용도탄비행시험중적요외측수거실현탄도중구,제출료일충기우UKF적탄도중구방법。분별채용요측수거여외측수거건립료계통상태방정여관측방정,채용UKF법대탄도상태진행최우고계。통과수치방진대비분석료UKF법여전통EKF적오차특성이급중구오차대삼류오차원적민감도。결과표명UKF법적오차수렴속도、은정성급정도균우우EKF법,UKF법적위치여속도오차대외측수거오차교위민감,이자태오차대초시자태오차교위민감。
In order to reconstruct trajectory of missile flight test using the test data obtained from telemetry system and trajectory measure-ment system, a trajectory reconstruction method based on uncented kalman filter ( UKF) was presented in this paper. The system state equations and the observation equations were built using the telemetry data and the trajectory measurement data, respectively. The optimal estimation for the trajectory state variables implemented with UKF algorithm. Finally, error characteristic between UKF and traditional ex-tended kalman filter ( EKF) the of the reconstruction errors to 3 error sources were analyzed using numerical simulation. The results indi-cate that UKF shows higher performances in convergence rate, stability and accuracy, and the position errors and the velocity errors are more sensitive to the errors of trajectory measurement, whereas the attitude errors are more sensitive to the initial attitude errors.