摘要
利用GPS进行弹道测量,进而预测弹丸落点,可以有效提高检靶精度。提出了一种弹道落点预测模型,包括飞行轨迹方程的建立、落地时刻的计算以及坐标系的转换。通过野点剔除和数据插值预处理方法提高落点的预测精度,基于弹丸位置的GPS仿真数据,对比分析了多项式拟合、傅里叶拟合等多种算法的预测精度,确定了不同精度对GPS数据量的需求,为工程应用中进行落点预测提供了参考。
Using GPS to measure trajectory and predicting the impact point can effectively improve the target detection accuracy. A model to predict impact point is proposed, establishing equation of the flight trajectory, calculating landing time and transforming the coordinate system included. By means of outlier elimination and data interpolation, the accuracy of predicting impact point is increased. Based on GPS simulation data of position of the projectile, predicting accuracy of several methods is compared and analyzed, such as polynomial fitting, Fourier fitting. Considering different needs for accuracy, the corresponding number of GPS data is defined, which provides reference for impact point prediction in engineering practice.
出处
《舰船电子工程》
2017年第8期48-52,共5页
Ship Electronic Engineering
关键词
落点预测
GPS
轨迹方程
误差分析
impact point prediction, GPS, trajectory equation, error anylasis
