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中文摘要：
在惯性制导过程中需要时刻计算弹道点扰动引力来精确校正制导系统并修正弹道。重点研究了3种弹道扰动引力的计算方法：地球重力场模型、点质量模型、单层密度模型,分别推导了其计算扰动引力的基本公式,并进行了数值模拟实验,分析比较了其精度和计算效率。
英文摘要：
The trajectory disturbing gravity needs to be real-time calculated to correct the inertial guidance system and ballistic trajectory precisely.Three kinds of methods used to calculate trajectory disturbing gravity are especially studied,they are earth gravity field model,point-mass model and monolayer density model.Its basic formulae are particularly deduced,the simulated numerical value experiments are made.The computational velocity and results precision are also analyzed and compared.
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