Millimeter-Level 3D Indoor Positioning

Millimeter-level 3D indoor positioning systems use acoustic sensors to achieve unprecedented positioning accuracy within indoor environments. These systems employ ultrasonic or acoustic signals to measure precise distances and angles, enabling millimeter-accurate tracking of objects or people with full six degrees of freedom (position and orientation).

The technology uses arrays of acoustic transmitters and receivers that create a positioning network. By measuring time-of-flight and phase differences of acoustic signals, the system calculates precise 3D coordinates. Unlike GPS which doesn't work indoors, or Wi-Fi/Bluetooth positioning which offers meter-level accuracy, acoustic positioning provides the precision needed for applications like augmented reality, robotics, motion capture, and industrial automation. The scalable architecture allows systems to cover small rooms or entire buildings with consistent accuracy.