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有限公司、帝国理工学院和牛津大学将联合研究使用新型重力梯度仪探测管道、隧道和天坑等地下物体。我们将模拟一系列掩埋目标的重力场，并研究减轻噪声和杂波的方法。我们将确定什么类型的物体是可探测的，在什么范围内，并制定一些大纲的操作概念。我们将研究一系列传感器的适用性，包括高性能的“冷原子喷泉”和低成本的基于MEMS的设备，配置为重力梯度计，并将其与商用传感器的性能进行比较。我们将建立一个单轴重力梯度仪的基础上，现有的两个重力仪，并使用它来验证我们的模型，通过短期的实地试验，以证明检测一个埋藏的物体。

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