球谐函数法解地球扰动引力并行计算方法

摘要

随着导弹射程的增加,传统求解地球扰动引力的球谐函数法模型阶数增大,扰动引力的计算速度明显下降.为提高弹道导弹扰动引力的赋值速度,在现有条件下结合球谐函数法计算模型的特点,在并行计算平台上,应用流水线技术和任务交叉分配的方法,建立了球谐函数法的并行计算模型.通过仿真验证,该方法能有效地提高地球扰动引力的计算速度,得到较高的并行加速比和CPU利用率.%Along with the increase of cannon-shot of the iterative calculation of the traditional spherical harmonic model for the disturbing gravitation problem,an increase in orders of model will result on a decrease in the speed of calculation.To improve the evaluating speed of the disturbing gravitation for the ballistic missile,considering the model characteristic of spherical harmonic model,using parallel computing technology and basing on pipelining technique and task cross-allotted way to build the parallel computing model,through the experiment,proves that this method can improve the calculate speed efficiently and get a high speed rate.