AtomTRAIN: Atom-based Transportation Resilience with Atom Interferometer Navigation

AtomTRAIN：基于原子的运输弹性与原子干涉仪导航

• 批准号: 10084906
• 金额: $ 14.76万
• 依托单位: M-SQUARED LASERS LIMITED
• 依托单位国家: 英国
• 项目类别: Small Business Research Initiative
• 财政年份: 2023
• 资助国家: 英国
• 起止时间: 2023 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=10084906
• 关键词: AtomTRAIN; Atom; based; Transportation; Resilience

Quantum sensing technologies offer levels of measurement precision, accuracy and stability that exceed those offered by classical (or non-quantum) approaches. An area where this performance enhancement shows great potential is in positioning, navigation and timing (PNT) systems. An important subcategory of PNT systems are ones based on inertial navigation systems. These calculate a relative position from a known starting point based on continuous measurements of acceleration, rotation and time. Such systems are essential in environments where satellite navigation systems are either unavailable, such as when underground or underwater, or when they are actively denied. Currently, the long-term positioning accuracy of such systems is severely limited by the performance of the classical acceleration and rotation sensors that they use, even in state-of-the-art incarnations. The performance of rotation and acceleration sensors based on atom interferometry with ultra-cold atoms offer at least an order of magnitude improvement on the long-term positioning accuracy of such classical inertial navigation systems. Despite this potential, there are currently no commercially available inertial measurement units that deliver the benefits of cold atom acceleration and rotation sensing. Our project will change this through the delivery of a commercially viable demonstrator system that offers quantum-enhanced positioning capability in the navigation of trains. Deploying quantum-IMUs on trains is intended to increase both positioning accuracy and precision, and also offering an extra layer of resilience and redundancy to current state-of-the-art systems. This could have several benefits, including the reduction in delays and cancellations, increasing the density of train traffic on a given section of track, and also reduced costs of maintaining and upgrading current signalling systems.

量子传感技术提供了测量精度，准确性和稳定性的水平，超过了经典（或非量词）方法提供的水平。这种性能增强的领域在定位，导航和时机（PNT）系统中显示出巨大的潜力。 PNT系统的一个重要子类别是基于惯性导航系统的一个。这些基于加速度，旋转和时间的连续测量的已知起点从已知起点计算一个相对位置。在卫星导航系统不可用的环境中，例如地下或水下或积极拒绝时，这种系统至关重要。当前，这种系统的长期定位精度受到经典加速度和旋转传感器的性能，即使在最新的化身中也受到了限制。基于原子干涉测量法的旋转和加速传感器的性能至少在此类经典惯性导航系统的长期定位精度上至少提高了数量级。尽管有这种潜力，但目前尚无商业可用的惯性测量单元，可以带来冷原子加速和旋转传感的好处。我们的项目将通过提供商业上可行的演示器系统来改变这一问题，该系统在火车导航中提供量子增强的定位能力。 将量子IMU部署在火车上旨在提高定位准确性和精度，还为当前最新系统提供了额外的弹性和冗余。这可能会带来一些好处，包括减少延迟和取消的功能，增加在给定的轨道部分上的火车交通密度，还可以降低维护和升级当前信号系统的成本。