TY - GEN
T1 - An eye-safe coherent lidar for speed measurement
AU - Ma, Zongfeng
AU - Zhang, Chunxi
AU - Ou, Pan
AU - Luo, Guangming
AU - Wang, Jiqiang
AU - Lan, Tian
PY - 2008
Y1 - 2008
N2 - An eye-safe, coherent Doppler Light Detection and Ranging (CDL) system for speed measurement under development at BUAA's School of Instrument Science and Opto-electronics Engineering is introduced in this paper. It consists of a 1.55-μm Er-doped fiber laser transmitter, a monostatic optical antenna, a single-mode fiber (SMF) interferometer, an InGaAs photodiode detector, and signal processing equipments. All devices of optical circuit are connected by SMFs making the system reliable and setup arrangement flexible. The goal is to give the evaluations of the Doppler frequency shift and platform speed. Since the speed accuracy is time-independent, the CDL system can be used for integrated navigation system. The quality of Doppler-shift estimation by a spectrum analysis technique, fast Fourier transform (FFT) algorithms, ameliorates as the signal-to-noise ratio (SNR) increases. For the developed CDL system incorporating with SMF interferometer, only the light beam of mode LP01 is permitted to propagate, therefore the SNR is improved greatly. Experiments were performed on a moving hard target with the CDL system and the results were presented.
AB - An eye-safe, coherent Doppler Light Detection and Ranging (CDL) system for speed measurement under development at BUAA's School of Instrument Science and Opto-electronics Engineering is introduced in this paper. It consists of a 1.55-μm Er-doped fiber laser transmitter, a monostatic optical antenna, a single-mode fiber (SMF) interferometer, an InGaAs photodiode detector, and signal processing equipments. All devices of optical circuit are connected by SMFs making the system reliable and setup arrangement flexible. The goal is to give the evaluations of the Doppler frequency shift and platform speed. Since the speed accuracy is time-independent, the CDL system can be used for integrated navigation system. The quality of Doppler-shift estimation by a spectrum analysis technique, fast Fourier transform (FFT) algorithms, ameliorates as the signal-to-noise ratio (SNR) increases. For the developed CDL system incorporating with SMF interferometer, only the light beam of mode LP01 is permitted to propagate, therefore the SNR is improved greatly. Experiments were performed on a moving hard target with the CDL system and the results were presented.
KW - Coherent doppler lidar
KW - Fast Fourier transform
KW - Integrated navigation system
KW - Multi-sensor
UR - https://www.scopus.com/pages/publications/43249092659
U2 - 10.1117/12.790816
DO - 10.1117/12.790816
M3 - 会议稿件
AN - SCOPUS:43249092659
SN - 9780819467645
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - International Symposium on Photoelectronic Detection and Imaging 2007 - Laser, Ultraviolet, and Terahertz Technology
T2 - International Symposium on Photoelectronic Detection and Imaging 2007 - Laser, Ultraviolet, and Terahertz Technology
Y2 - 9 September 2007 through 12 September 2007
ER -