Doppler Analysis of a Lidar-Photonic Radar Combined Sensor System

The Doppler shift in a combined light detection and ranging (lidar) and photonic radio detection and ranging (radar) sensor systems for large aperture phased array and multiple input multiple output (MIMO) is investigated. Reusing the optical frequency modulated continuos wave (FMCW) local oscillator (LO) signal of a photonic radar system could be beneficial for coherent large aperture phased array MIMO lidar systems with almost no additional cost. Within this paper, the Doppler shift of such a lidar radar combined sensor (LiRaS) system is analysed. It should be noted, that all components of a LiRaS system can be monolithically integrated into silicon based electronic photonic integrated circuits (EPICs).