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- W3136239674 abstract "Light detection and ranging (LiDAR) technologies, the active imaging technology, show a great potential in applications like threedimensional imaging. Combined with the frequency-modulated continuous-wave (FMCW) technology, LiDAR can provide the velocity of the target based on the Doppler effect. The linearization of the laser frequency sweep is crucial for higher resolution and lower signalto-noise ratio in FMCW LiDAR. In this paper, a proportional integral derivative (PID) control method based on a back propagation (BP) neural network is used to pre-calibrate the DFB laser to realize the high-linearity frequency sweep. The laser sweeping frequency is 12.5 kHz with a laser frequency excursion of 3.7 GHz, and the residual nonlinearity is 0.0015%. The linearized DFB laser is applied to the FMCW LiDAR system for two-dimensional imaging with a maximum distance of 70 meters." @default.
- W3136239674 created "2021-03-29" @default.
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- W3136239674 date "2021-03-12" @default.
- W3136239674 modified "2023-09-27" @default.
- W3136239674 title "Laser frequency sweep linearization by BP neural network for FMCW LiDAR" @default.
- W3136239674 doi "https://doi.org/10.1117/12.2587229" @default.
- W3136239674 hasPublicationYear "2021" @default.
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