基于GPS的弹道修正弹落点预测算法误差分析

利用GPS进行弹道测量进而预测落点偏差是弹道修正弹采用的一种常用方法,GPS测量误差对基于GPS的落点预测算法精度有直接影响,该文以摄动落点偏差预测算法为例分析了GPS误差对弹道修正弹落点预测算法误差的影响,确定了GPS误差引起的落点预测算法误差标准差与极限误差求解方法,这可为合理利用基于GPS的落点预测算法提供参考。最后进行的仿真实验表明,GPS误差是落点预测算法误差的主要来源,落点预测算法随机误差分布在GPS误差引起的落点预测算法预测误差极限误差内。

Error analysis for impact point prediction algorithm of trajectory correction projectile based on GPS

The use of GPS to measure trajectory and predict the impact point is a common method used by the trajectory correction projectile,GPS error has a direct impact on the accuracy of impact point prediction algorithm based on GPS, the impact of GPS error to impact point prediction algorithm error is analyzed taking perturbation impact point prediction al- gorithm as an example,the method for calculating standard deviation and limit error of impact point prediction algorithm error caused by GPS error is identified,which can provide reference for the rational use of impact point prediction algo- rithm based on GPS. Simulation experiments indicate that the GPS error is the major source of impact point prediction, random error of impact point prediction is inside the limit error cased by GPS error.