Millimetre - wave metasurface barcodes: deciphering location information for a smart train radar

在该项目中，创新和低成本的被动元表面将被开发为安装在铁路轨道旁的标志柱，用于列车信号和安全。这些标志柱将作为分界点，由安装在列车上的现成雷达探测。通过这种方式，列车的计算机将根据路标检测确定其在导轨上的位置。在某些情况下，标志柱将具有独特的签名（如条形码），如果列车的位置未知，则该签名将使车载计算机能够在导轨上定位列车，或者如果位置确定，则重新验证其在导轨上的位置。 这些平面路标将实现基于正在进行的，尖端的，在惠更斯的元表面在首席研究员的小组的发展。这些超颖表面包括共同定位的电偶极子和磁偶极子的阵列，以操纵入射电磁场。该项目将与位于多伦多的泰利斯加拿大公司合作进行，泰利斯加拿大公司是铁路信号和安全运输系统的世界领导者。这些创新的超表面标志柱对铁路安全、性能和成本的好处将是巨大的，包括取代目前容易出现故障和高维护开销的接近探测器。

In this project, innovative and low-cost passive metasurfaces will be developed as sign-posts installed on a railway trackside for train signaling and safety. These sign-posts will serve as demarcation points detected by an off-the-shelf radar installed on-board the train. In this way, the train's computer will determine its position on the guideway based on the sign-post detection. In some cases the sign-posts will have a unique signature (like a barcode) which will enable the on-board computer to localize the train on the guideway if its position is unknown or to re-verify its position on the guideway if the position is determined. These planar sign-posts will be realized based on ongoing, cutting-edge, developments in Huygens' metasurfaces at the principal investigator's group. These metasurfaces comprise arrays of co-located electric and magnetic dipoles to manipulate incident electromagnetic fields. This project will be carried out in collaboration with Thales Canada in Toronto which is a world leader in railway signaling and safety transportation systems. The benefits from these innovative metasurface sign-posts to railway safety, performance and cost will be significant and include the replacement of current proximity detectors that are prone to failure and high-maintenance overhead.