蒙特卡罗法分析GPS误差对火箭弹落点预测精度的影响

Analysis on effect of GPS error on point prediction of rocket using Monte-Carlo method

针对火箭弹在落点预测过程中GPS随机误差影响预测精度的情况,从理论和仿真实验上对该影响进行分析。该文将GPS误差作为典型的随机过程,结合火箭弹动力学模型建立数学模型,并利用经典的统计试验法-蒙特卡罗分两种情况进行弹道仿真实验,预测弹丸落点。仿真结果表明:在存在GPS误差的情况下弹道修正的精度大幅降低,因此GPS误差是影响落点预测精度的重要因素。

In rocket impact point prediction, GPS error is one of the most important factors causing errors in accuracy of impact point prediction. In this paper, GPS error was regarded as typical random process and the mathematic model was established, so that the traditional statistical analysis approach Monte-Carlo method can be applied in prediction of rocket impact point. Through simulation, the effect of GPS error on the accuracy of impact point prediction was analyzed effectively in order to provide the experiment data for increasing the firing accuracy of the rocket.