A robust 3D high precision radio location system

For the precise measurement of 3D object coordinates a high precision radio location system is introduced for 3D applications and optimized for very high precision. In different test scenarios the system is evaluated with regards to precision, resolution, reproducibility, and robustness. Based on a direct sequence spread spectrum transmission at 24 GHz the radio location system shows high robustness against interferers as well as a high suppression of reflections. After adequate object tracking using a Kalman filter it offers a very high precision with an uncertainty of 0.1 mm also in very general highly reflective indoor environment.