CG-5相对重力仪野外实验精度分析

发布时间：2018-03-02 23:15

本文选题：CG-相对重力仪　切入点：静态零点漂移　出处：《测绘科学》2017年03期 　论文类型：期刊论文

【摘要】：针对CG-5相对重力仪零点漂移规律对测量精度的影响及仪器系统阐述欠缺等问题,通过静态、动态和布设相对重力网实验对CG-5相对重力仪进行测试,研究CG-5型相对重力仪的漂移规律、性能及精度。结果表明,仪器的静态零点漂移线性度很好,6d的零漂率变化不大,总体呈下降的趋势。经过零点漂移改正后的动态零漂率很小,仅为5μGal/h,动态实验的动态误差为2.207μGal,在限差10μGal之内。相对重力网平差精度较高,均在限差5μGal之内。CG-5相对重力仪在测试中表现出了较稳定的状态,测得数据精度较高,符合厂商提供的标称精度。
[Abstract]:Aiming at the influence of 00:00 drift law of CG-5 relative gravimeter on measurement accuracy and the deficiency of instrument system, the CG-5 relative gravimeter is tested by static, dynamic and layout relative gravity net experiment. The drift law, performance and precision of the CG-5 relative gravimeter are studied. The results show that the static 00:00 drift linearity of the instrument is very good and the zero drift rate of the instrument has a small change, but the overall trend is decreasing. After 00:00 drift correction, the dynamic zero drift rate is very small. The dynamic error of dynamic experiment is 2.207 渭 Gal. within the limit of 10 渭 Gal. The accuracy of relative gravity network adjustment is relatively high, and the relative gravimeter shows a stable state in the test, and the precision of the measured data is higher than that of the CG-5 relative gravimeter. Conforms to the nominal accuracy provided by the manufacturer.
【作者单位】：山东科技大学测绘科学与工程学院;安徽理工大学测绘学院;
【基金】：国家自然科学基金项目(41374009) 国家科技基础性工作专项(2015FY310200) 山东省自然科学基金项目(ZR2013DM009) 山东科技大学科研创新团队支持计划项目(2014TDJH101)
【分类号】：P223

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