Scanning-free FMCW Lidar using a linear image sensor

Jongchan Park; Liang Gao

doi:10.1117/12.3000569

12 March 2024 Scanning-free FMCW Lidar using a linear image sensor

Jongchan Park, Liang Gao

Proceedings Volume PC12893, Photonic Instrumentation Engineering XI; PC128930H (2024) https://doi.org/10.1117/12.3000569
Event: SPIE OPTO, 2024, San Francisco, California, United States

Abstract

FMCW-LiDAR (Frequency-modulated continuous wave - Light detection and ranging) measures object distance by measuring the temporal interferogram with frequency-swept laser beams. However, to capture 3D scenes, most current FMCW-LiDARs rely on raster scanning of the laser beam, which compromises either image resolution or volumetric frame rate. In this work, we present a scanning-free FMCW-LiDAR by introducing a computational imaging framework. Specifically, the 3D scene is captured using a one-dimensional linear sensor integrated with a series of lens and prism arrays. Additionally, we employ the compressed sensing principle, enabling us to efficiently capture high-resolution 3D scenes.

Conference Presentation

Citation Download Citation

Jongchan Park and Liang Gao "Scanning-free FMCW Lidar using a linear image sensor", Proc. SPIE PC12893, Photonic Instrumentation Engineering XI, PC128930H (12 March 2024); https://doi.org/10.1117/12.3000569

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