| 旋转重力梯度仪的加速度计动态调节方法与需求分析 |
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| 引用本文： | 涂良成,刘金全,王志伟,周泽兵. 旋转重力梯度仪的加速度计动态调节方法与需求分析[J]. 中国惯性技术学报, 2011, 19(2) |
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| 作者姓名： | 涂良成 刘金全 王志伟 周泽兵 |
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| 作者单位： | 华中科技大学物理学院重力导航教育部重点实验室,武汉,430074 |
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| 基金项目： | 中央高校基本科研业务费资助HUST |
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| 摘 要： | 适合陆基使用的旋转重力梯度仪采用多个加速度计的组合输出,能有效地抑制平台的共模噪声,实现对地球表面微小重力梯度变化信号的测量.其关键技术之一就是对多个加速度计进行动态匹配调节,通过实时反馈来降低多种噪声和误差,从而降低对研制单个加速度计的性能要求.本文结合旋转重力梯度仪中加速度计的匹配调节方法,以重力梯度测量分辨率达到1E为目标分析,结果表明对加速度计的标度因子一致性匹配需要达到10-11的量级,对二阶非线性因子调节同样需要达到～10-11g/g2的量级.
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| 关 键 词： | 旋转重力梯度仪 加速度计 动态匹配调节 标度因子动态匹配 二阶非线性因子调节 |
Methods and requirements of dynamic compensation between accelerometers in rotating gravity gradiometer |
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| TU Liang-cheng,LIU Jin-quan,WANG Zhi-wei,ZHOU Ze-bing. Methods and requirements of dynamic compensation between accelerometers in rotating gravity gradiometer[J]. Journal of Chinese Inertial Technology, 2011, 19(2) |
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| Authors: | TU Liang-cheng LIU Jin-quan WANG Zhi-wei ZHOU Ze-bing |
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| Affiliation: | TU Liang-cheng,LIU Jin-quan,WANG Zhi-wei,ZHOU Ze-bing(Key Laboratory of Gravity Navigation of Ministry of Education,School of Physics,Huazhong University of Science and Technology,Wuhan 430074,China) |
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| Abstract: | The land-based rotating gravity gradiometers take advantage of the combined output of multi-accelerometers to effectively depress the common-mode noises of the inertial platform,so as to realize the measurement of the feeble variation of the Earth's gravity gradient.One of the key technologies in rotating gravity gradiometers is to dynamically match the accelerometers by using real-time feedback,which recedes the noises and errors from the accelerometers and reduces the performance requirement of individual... |
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| Keywords: | rotating gravity gradiometer accelerometer dynamic compensation scale factor balance adjustment of second order nonlinear coefficient |
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