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RSS FeedsSensors, Vol. 19, Pages 2313: Distance and Velocity Measurement of Coherent Lidar Based on Chirp Pulse Compression (Sensors)

 
 

20 may 2019 17:02:31

 
Sensors, Vol. 19, Pages 2313: Distance and Velocity Measurement of Coherent Lidar Based on Chirp Pulse Compression (Sensors)
 




To explore lidar, which can simultaneously measure the distance and velocity of long-distance targets at high resolution, a coherent lidar system based on chirp pulse compression has been studied. Instead of a conventional acousto-optic modulator (AOM), we used an electro-optic modulator (EOM) to modulate a continuous 1550 nm laser. Using EOM, the resolution of the lidar is higher and the system simpler. The electrical waveform used to modulate the laser is a chirp pulse, which has a sweeping bandwidth of 98 MHz, a duration of 10 µs, and a pulse repetition rate of 20 kHz. The result of 100 measurements shows that the system may yield accurate information in range, ±22 cm, and radial velocity, ±1.066 cm/s.


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31 viewsCategory: Chemistry, Physics
 
Sensors, Vol. 19, Pages 2314: Erratum: Lou, X.; Jia, Z.; Yang, J.; Kasabov, N. Change Detection in SAR Images Based on the ROF Model Semi-Implicit Denoising Method. Sensors 2019, 19, 1179 (Sensors)
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