| 惯性技术视角下动态重力测量技术评述(四):无陀螺惯性导航与重力梯度测量的融合 |
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| 引用本文： | 常国宾,李胜全.惯性技术视角下动态重力测量技术评述(四):无陀螺惯性导航与重力梯度测量的融合[J].海洋测绘,2014,34(6):8-12. |
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| 作者姓名： | 常国宾 李胜全 |
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| 作者单位： | 海军海洋测绘研究所,天津,300061 |
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| 摘 要： | 加速度差分式重力梯度仪与无陀螺惯性导航系统都采用一组在三维空间中布置的加速度计,二者在硬件配置和工作原理层面都具有紧密联系。从比力测量的空间差分公式出发,详细推导了重力梯度测量和无陀螺惯性导航系统共同的工作原理,指出当前对后者的研究中存在的忽略重力梯度的问题,并论述了二者的融合应用。
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| 关 键 词： | 重力梯度测量 无陀螺惯性导航系统 加速度计 重力梯度仪 比力测量 差分 |
Overview on Dynamic Gravimetry in the Perspective of Inertial Technology,Part IV:The Fusion of Gyro-free Inertial Navigation and Gravity Gradiometry |
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| CHANG Guobin,LI Shengquan.Overview on Dynamic Gravimetry in the Perspective of Inertial Technology,Part IV:The Fusion of Gyro-free Inertial Navigation and Gravity Gradiometry[J].Hydrographic Surveying and Charting,2014,34(6):8-12. |
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| Authors: | CHANG Guobin LI Shengquan |
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| Institution: | ( Naval Institute of Hydrographic Surveying and Charting, Tianjin 300061, China) |
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| Abstract: | Both acceleration-difference gravity gradiometers and gyro-free inertial navigation systems use a set of accelerometers located at different positions in the 3D space.So there are close connections between them in hardware configurations and theoretical principles.The common theory of both systems are analyzed in detail through deriving the equations of space difference of the specific force of the accelerometers.A pitfall that the gravity gradient is ignored in the current study of the gyro-free inertial navigation system is pointed out.The potential fusion of the two systems is forecasted. |
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| Keywords: | gravity gradiometry gyro-free inertial navigation system acclerometer gravity gradiometer specific force measurement space difference |
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