Computation of gravity vertical gradient in gravity reduction of gravity-aided inertial navigation system;
重力辅助惯性导航中重力归算的垂直梯度计算
In view of engineering utility,the paper analyzes the underwater gravity reduction technology in the gravity-aided navigation in detail,and it shows that the sea tide and sea surface topography(SST) are the two main effective factors.
从工程实用角度出发,对重力场辅助水下导航中的实测重力的数据归算过程进行了详细分析,明确了海洋潮汐和海面地形的计算精度是决定水下重力归算精度的主要因素。
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