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.
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