Extending measurement range in coherent LiDAR using multi-interferometer

Won Tae Choe; Min Uk Jung; Gyeong Hun Kim; Chang-Seok Kim

doi:10.1117/12.3003629

12 March 2024 Extending measurement range in coherent LiDAR using multi-interferometer

Won Tae Choe, Min Uk Jung, Gyeong Hun Kim, Chang-Seok Kim

Proceedings Volume PC12893, Photonic Instrumentation Engineering XI; PC1289305 (2024) https://doi.org/10.1117/12.3003629
Event: SPIE OPTO, 2024, San Francisco, California, United States

Abstract

Coherent light detection and ranging (LiDAR) system is widely used to measure distance. Distance and velocity measurements are important in many industries, including autonomous vehicles. However, conventional coherent LiDAR systems has limitations in measuring distance and velocity due to laser coherence length and frequency ambiguity. In this study, through wavelength division multiplexing, multi-interferometer was used to overcome these limitations. To solve the frequency ambiguity in this system, a novel method of frequency decoding is utilized. By applying the frequency decoding to our system, we can address the issues associated with proposed coherent LiDAR.

Conference Presentation

Citation Download Citation

Won Tae Choe, Min Uk Jung, Gyeong Hun Kim, and Chang-Seok Kim "Extending measurement range in coherent LiDAR using multi-interferometer", Proc. SPIE PC12893, Photonic Instrumentation Engineering XI, PC1289305 (12 March 2024); https://doi.org/10.1117/12.3003629

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