In this paper the improved method,also named transformation of the polar,is used to predigest the iterative calculation,and the simulation calculation has been progressed.

• 文中运用了一种改进的球谐函数法,即换极法,大大简化了勒让德函数的递推计算,并进行了换极前后被动段扰动引力的仿真计算。