Frequency‐modulated continuous‐wave light detection and ranging with sinusoidal frequency modulation and beat phase detection | Zendy

Tsuchida H. | Zendy

Open Access

Frequency‐modulated continuous‐wave light detection and ranging with sinusoidal frequency modulation and beat phase detection

Author(s) -

Tsuchida H.

Publication year - 2019

Publication title -

electronics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.375

H-Index - 146

eISSN - 1350-911X

pISSN - 0013-5194

DOI - 10.1049/el.2019.3005

Subject(s) - ranging , beat (acoustics) , frequency modulation , modulation (music) , phase modulation , acoustics , amplitude modulation , continuous wave , optics , physics , materials science , electronic engineering , computer science , radio frequency , phase noise , telecommunications , engineering , laser

The performance of a frequency‐modulated continuous‐wave light detection and ranging is severely limited by the inherent non‐linear chirp when laser diodes with direct frequency modulation are used as light sources. The author proposes and demonstrates a new modulation and detection scheme that is immune to non‐linear chirp. Sinusoidal frequency modulation and beat phase detection are employed for measuring both the velocity and distance of a target. Relative accuracies below ± 2 mm/s and ± 1 mm are confirmed for velocity and distance measurements, respectively, in the proof‐of‐principle experiment.

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