一种GPS弹道辨识方法的精度仿真分析  

Analysis on the Precision of a GPS-Based Trajectory Identification Method by Simulation

作　　者：申强[1] 葛腼[1] 张冀兴[1] 李杰[1] 

机构地区：[1]北京理工大学宇航科学技术学院,北京100081

出　　处：《北京理工大学学报》2009年第2期100-102,共3页Transactions of Beijing Institute of Technology

基　　金：国防重点实验室基金资助项目(9140C3606020605)

摘　　要：为提高弹道修正精度,提出一种利用GPS测量数据对弹道进行辨识的方法.该方法可在降低GPS测量随机误差影响的同时,间接得到某时刻弹道倾角,为弹道预测提供初始参数.采用蒙特卡罗模拟的方法,对这种弹道辨识方法的精度进行了计算.结果表明,以目前商用单频C/A码GPS接收机的测量精度,该弹道辨识方法对落点预测的圆概率相对误差为0.09%,能够满足弹道修正引信精度要求.A trajectory identification method applying parameters measured by GPS is put forward in order to improve the precision of trajectory correction. This method can decrease influence of random measurement error. At the same time, the trajectory inclination angle can be calculated indirectly and the initial parameters can be obtained for trajectory prediction. The precision of the method was calculated by Monte Carlo method. Simulation results showed that the relative circular error probable was 0.09% under the precision of recent commercial GPS receiver that processes signal of single frequency and C/A code, which could satisfy the precision requirement of trajectory correction fuze.

关 键 词：全球定位系统(GPS) 弹道修正 弹道辨识 最小二乘法 蒙特卡洛仿真 

分 类 号：TJ410.37[兵器科学与技术—火炮、自动武器与弹药工程]