WORKSHOP PAPER
Analysis of a coherent 3D imaging sensor for long-range LiDAR
Abstract
This paper presents the concepts and principles of coherent detection technology using analytical modeling. System level comparisons are made with a direct detection technology, namely, dToF and performance metrics such as SNR and detection probability are derived. The analysis particularly demonstrates the suitability of coherent imaging for long range LiDAR scenarios. Additionally, measurement results in support of the analysis are also presented.Keywords
3D imaging, coherent detection, LiDAR, system modeling,References
1) Gyongy, Istvan, et al., "A direct time-of-flight image sensor with in-pixel surface detection and dynamic vision", IEEE Journal of Selected Topics in Quantum Electronics 30.1: Single-Photon Technologies and Applications, 2023. https://doi.org/10.1109/jstqe.2023.3238520
2) Kumagai, Oichi, et al., "7.3 A 189× 600 back-illuminated stacked SPAD direct time-of-flight depth sensor for automotive LiDAR systems", 2021 IEEE International Solid-State Circuits Conference (ISSCC), 2021. https://doi.org/10.1109/isscc42613.2021.9365961
3) , "https://autonomoustuff.com/lidar-chart"
4) Tontini, Alessandro, et al., "Comparative evaluation of background-rejection techniques for SPAD-based LiDAR systems", Integration 90, 2023. https://doi.org/10.1016/j.vlsi.2022.12.007
5) Nicolaescu, Remus, et al., "3D imaging via silicon-photonics-based LIDAR", Silicon Photonics XVI, 2021. https://doi.org/10.1117/12.2591284
6) , "Osche GR. Optical detection theory for laser applications", 2002
