Due to signal shielding caused by building structures, conventional mature positioning technologies such as the Global Positioning System (GPS) are only suitable for outdoor navigation and detection. However, there are many scenarios that urgently require high-precision indoor positioning technologies, such as indoor wireless optical communications (OWCs), navigation in large buildings, and warehouse management. Here, we proposed a millimeter-precision indoor positioning technology based on metalens-integrated camera, which determines the position of the device through imaging of beacon LEDs. Thanks to the wide-angle imaging design of our metalens, the camera can accurately capture images of beacon LEDs even when it is situated in distant corner locations. Consequently, our localization scheme achieves millimeter-level positioning accuracy across majority of wide-angle (∼120°) indoor area. Compared to traditional positioning schemes by photodiode (PD), our imaging-based approach demonstrates superior resistance to interference, thereby safeguarding positioning precision from the external signals influence. Furthermore, the compact dimensions and high performances of the positioning device make it suitable for integration into highly portable devices, such as smartphones and drones, revealing its broad potential applications in the future.

中文翻译：

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通过超透镜集成相机实现广角室内区域的毫米级精度定位


由于建筑结构对信号的屏蔽，传统成熟的定位技术如全球定位系统（GPS）仅适用于室外导航和检测。然而，有很多场景迫切需要高精度的室内定位技术，例如室内无线光通信（OWC）、大型建筑导航、仓库管理等。在此，我们提出了一种基于超透镜集成相机的毫米级精度室内定位技术，该技术通过信标LED的成像来确定设备的位置。得益于我们的超透镜的广角成像设计，即使信标 LED 位于遥远的角落位置，相机也可以准确捕获其图像。因此，我们的定位方案在大部分广角（~120°）室内区域实现了毫米级的定位精度。与传统的光电二极管（PD）定位方案相比，我们基于成像的方法表现出卓越的抗干扰能力，从而保护定位精度免受外部信号的影响。此外，定位设备的紧凑尺寸和高性能使其适合集成到高度便携的设备中，例如智能手机和无人机，揭示了其未来广泛的潜在应用。