CAJ | 학술논문

航天测控中雷达的测量值具有较大的随机误差，用雷达的测量值直接解算运载火箭的外弹道跟踪精度较低。提出基于IMM-UKF的雷达机动目标跟踪方法，适应了航天发射任务中运载火箭在不同时段具有不同机动特性条件下对机动目标稳定精确跟踪的需要。仿真结果表明和利用雷达测量值直接解算目标弹道的方法以及采用单一运动模型的UKF滤波方法相比，IMM-UKF算法具有更高的外弹道跟踪精度，并且算法的收敛速度满足航天测控外弹道跟踪的实时性要求。
항천측공중뢰체적측량치구유교대적수궤오차，용뢰체적측량치직접해산운재화전적외탄도근종정도교저。제출기우IMM-UKF적뢰체궤동목표근종방법，괄응료항천발사임무중운재화전재불동시단구유불동궤동특성조건하대궤동목표은정정학근종적수요。방진결과표명화이용뢰체측량치직접해산목표탄도적방법이급채용단일운동모형적UKF려파방법상비，IMM-UKF산법구유경고적외탄도근종정도，병차산법적수렴속도만족항천측공외탄도근종적실시성요구。
The great tracking error of radar to maneuvering target exists in aerospace measurement & control if the exterior trajectory of a launcher is calculated directly according to the measured value of radar because of the high random error. An IMM-UKF based maneuvering target tracking method of radar which satisfies the motion characteristic of the carrier rocket better is presented. The simulation result shows that the IMM-UKF algorithm has higher accuracy of exterior ballistic tracking than that of the methods such as direct calculation method of target trajectory and UKF filtering method based on single motion model. In ad-dition,the convergence velocity of IMM-UKF algorithm can meet the real-time requirement of exterior ballistic tracking in aero-space measurement & control.