Evaluation and Demonstration of Gravity Gradiometers

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引力场，并研究减少噪声和杂波的方法。我们将确定什么类型的物体是可探测的，在什么范围内，并制定一些行动的概念性概念。我们将调查配置为重力梯度计的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，并将它们与商用传感器的性能进行比较。我们将在现有的两台重力仪的基础上建造一台单轴重力梯度仪，并用它来验证我们的模型，通过短期的野外试验来演示对埋藏物体的探测。

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.