This device is a product developed for slope monitoring at medium/close distances, based on arc-shaped synthetic aperture high-resolution imaging and differential interferometry measurement principles. It features non-contact monitoring, high-precision real-time measurement, ultra-lightweight design, omnidirectional scanning, and all-day, all-weather operation unaffected by cloud, rain, fog, vegetation movement, or animal activity. With simple deployment, user-friendly operation, an intuitive software interface, and comprehensive intelligent early-warning capabilities, it delivers high reliability and accuracy. The device is widely applicable in scenarios such as landslide emergency response, slopes in mountainous areas, slopes along railways/highways, open-pit mine slopes, tunnel/bridge monitoring, building collapse detection, and landslide prevention.