直升机航迹预测精度分析

该文全面分析直升机航迹预测方法，给出直升机航迹模型和去相关的航迹及其预测精度分析，提出用灰色系统实时在线建立直升机航迹的GM预测模型，并进行精度预测。结果表明，去相关的卡尔曼滤波方法虽可提高预测精度，但计算量较大，对目标作机动时，预测误差较大；而用灰色系统预测直升机航迹，只需用较少的探测数据，就可以得到较高的预测精度。

Prediction Precision Analysis of Helicopter Tracks

Helicopter track prediction methods are thorough ly analyzed, and helicopter track model, decorrelation track model a nd their prediction analysis are also presented .The real time, online GM pred iction model using grey system theory are constructed and its prediction precisi on analysis is carried out. Results show that decorrelated Kalman filtering method can improve prediction precision , but involve complicated a computatio n and relatively large prediction error when the target is maneuvering. The pred iction of helicopter track with grey system theory involves less dictation data and gives a higher prediction precision.