Phase-Modulated Continuous-Wave Coherent Ranging Method and Anti-Interference Evaluation

Light detection and ranging (LiDAR) has been applied in many areas because of its excellent performance. An easily achievable, cost-effective, high-performance method is a major challenge LiDAR. Meanwhile, with the increasing applications LiDAR, numerous LiDARs can be made to operate simultaneously, potential interference inevitable. Therefore, immunity against paramount LiDAR systems. In this paper, we demonstrated referred as phase-modulated continuous-wave (PhMCW). A range 50 m error 2.2 cm are achieved. one-dimensional scanning system that capable detecting targets at 28 built, demonstrating validation PhMCW method. Moreover, propose quantitative for evaluating anti-interference capability lidar The p-values Ljung–Box test were 0.0589 0.6327 ToF coherent interferences, respectively, indicating immune interference. proposed all types systems, regardless or beam-steering technique used.