3D coherent lidar imaging without coherence length limitation

This paper introduces a transformative approach to 3D lidar imaging through the Multi-Tone Continuous Wave (MTCW) coherent lidar system. Addressing coherence length constraints in coherent continuous wave (CW) lidar systems. We present a method utilizing static RF modulation frequencies to achieve 3D imaging. Our system demonstrates the capability to measure distances up to 11km, surpassing the 950m coherence length of the laser. This approach has far-reaching implications for applications requiring extended ranging capabilities, marking a significant evolution in coherent lidar technology. The study concludes by highlighting the potential impact on various fields, including autonomous navigation and remote sensing, thereby paving the way for enhanced spatial awareness in diverse applications.