Evaluation and Demonstration of Gravity Gradiometers

重力梯度仪评估与演示

• 批准号: EP/R01955X/1
• 负责人: William Pike
• 金额: $ 11.63万
• 依托单位: Imperial College London
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2017
• 资助国家: 英国
• 起止时间: 2017 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FR01955X%2F1
• 关键词: Evaluation; Demonstration; Gravity; Gradiometers

QinetiQ Ltd, Imperial College and the University of Oxford will jointly investigate the use of novel gravity gradiometers to detect buried objects such as pipes, tunnels and sinkholes. We will model the gravitational field of a range of buried targets, and investigate methods to mitigate noise and clutter. We will determine what type of objects are detectable, at what range, and develop some outline Concepts of Operation. We will investigate the applicability of a range of sensors, both high performance "cold atom fountains" and lower-cost MEMS-based devices, configured as gravity gradiometers, and compare them to the performance of commercially available sensors. We will build a single-axis gravity gradiometer based on two existing gravimeters, and use this to validate our models with through short field trials to demonstrate the detection of a buried object.

Qinetiq Ltd，帝国学院和牛津大学将共同研究使用新型重力层仪来检测埋入的物体，例如管道，隧道和污垢。我们将建模一系列埋入目标的重力场，并研究减轻噪音和混乱的方法。我们将在哪种范围内确定哪些类型的对象可以检测到，并开发出一些大纲操作概念。我们将研究一系列传感器的适用性，高性能“冷原子喷泉”和基于低成本的MEMS设备，配置为重力级别计，并将其与市售传感器的性能进行比较。我们将基于两个现有的重量表构建一个单轴重力梯度仪，并使用它通过短现场试验来验证我们的模型，以证明对埋藏的物体的检测。

项目成果

Full-Band Signal Extraction From Sensors in Extreme Environments: The NASA InSight Microseismometer

• DOI: 10.1109/jsen.2018.2871342
• 发表时间: 2018-11
• 期刊: IEEE Sensors Journal
• 影响因子: 4.3
• 作者: A. Stott;C. Charalambous;T. Warren;W. Pike

Initial results from the InSight mission on Mars

• DOI: 10.1038/s41561-020-0544-y
• 发表时间: 2020-02-24
• 期刊: NATURE GEOSCIENCE
• 影响因子: 18.3
• 作者: Banerdt, W. Bruce;Smrekar, Suzanne E.;Wieczorek, Mark
• 通讯作者: Wieczorek, Mark

A BROAD-BAND SILICON MICROSEISMOMETER WITH 0.25 NG/RTHZ PERFORMANCE

• DOI: 10.1109/memsys.2018.8346496
• 发表时间: 2018-01-01
• 期刊: 2018 IEEE MICRO ELECTRO MECHANICAL SYSTEMS (MEMS)
• 作者: Pike, W. T.;Standley, L. M.;Mukherjee, A. G.
• 通讯作者: Mukherjee, A. G.