| 顾及误差频谱特性的CHZ重力仪航空应用研究 |
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| 引用本文： | 梁星辉,柳林涛,吴鹏飞,何建刚. 顾及误差频谱特性的CHZ重力仪航空应用研究[J]. 测绘学报, 2013, 42(5): 633-639 |
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| 作者姓名： | 梁星辉 柳林涛 吴鹏飞 何建刚 |
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| 作者单位： | 中国科学院测量与地球物理研究所 |
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| 基金项目： | 国家重大科学仪器设备开发专项(2011YQ120045);国家自然科学基金(41074050;41021003);武汉大学地球空间环境与大地测量教育部重点实验室测绘基础研究基金(08201201);动力大地测量重点实验室开放基金(L09-18) |
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| 摘 要： | 给出了航空重力测量误差频域分析的方法，利用功率谱密度从频域分析了航空标量重力测量系统恢复重力场的能力及影响因素。介绍了CHZ重力仪的主要特点，并利用实测空中重力异常数据及机载GPS动态加速度数据，结合航空重力测量的频谱范围，分析了CHZ重力仪在不同阻尼系数下的动态性能。计算结果表明，采用合适的阻尼系数，CHZ重力仪能够被用于固定翼飞机的航空重力测量。
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| 关 键 词： | 航空重力测量 误差频谱分析 CHZ重力仪 阻尼系数 |
| 收稿时间： | 2012-06-26 |
| 修稿时间： | 2012-11-17 |
Study on CHZ gravimeter applied in airborne gravimetry involving error spectrum characteristic |
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| LIANG Xinghui;LIU Lintao;WU Pengfei;HE Jiangang. Study on CHZ gravimeter applied in airborne gravimetry involving error spectrum characteristic[J]. Acta Geodaetica et Cartographica Sinica, 2013, 42(5): 633-639 |
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| Authors: | LIANG Xinghui LIU Lintao WU Pengfei HE Jiangang |
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| Affiliation: | LIANG Xinghui;LIU Lintao;WU Pengfei;HE Jiangang;State Key Laboratory of Geodesy and Geodynamics,Institute of Geodesy and Geophysics,Chinese Academy of Sciences;University of Chinese Academy of Sciences; |
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| Abstract: | The method of error analysis in frequency domain for airborne gravimetry is introduced firstly. Here, the ability to recovery gravity field for airborne scalar gravimetry is assessed using power spectrum density of gravity signal and system noise in frequency domain, and error sources of airborne gravimetry are also discussed in different frequency bands. Then, the characteristics of CHZ Gravimeter are introduced. Meanwhile, the dynamic proprieties of CHZ gravimeter with different damp factors, which base on frequency bands of airborne gravimetry, are analyzed using observed gravity anomalies and vertical acceleration data measured by airborne GPS. The result indicates that CHZ gravimeter with proper damp factor can meet the requirements of airborne gravimetry for fixed wing aircraft. |
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