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所做的研究是实施重力无源导航定位的基础，对下一步的重力图匹配及导航误差的修正具有重要的意义。
It is the foundation of gravitational passive navigation and has considerable value on the gravitational map matching and the correction of navigational errors inherent in INS system.
利用迭代最近等值点(ICCP)算法对重力图上的航迹进行匹配可以减小惯性导航系统误差，但计算量大。
It can reduce the error of the inertial navigation system when using Iterative Closest Contour Point (ICCP) algorithm for track matching on the gravity map, however it brings large computation costs.
看所有力的自由体受力图(包括重力和正向力)。
View a Free Body Diagram of all the forces (including gravitational and normal forces).
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