FMCW Lidar and noise analysis of data acquisition signal chain

doi:10.37188/OPE.20233101.0078

CIOMP OpenIR

	FMCW Lidar and noise analysis of data acquisition signal chain
	S. Zhao, Y. Wang, M. Zhang, L. Qin, J. Song and L. Wang
	2023
发表期刊	Guangxue Jingmi Gongcheng/Optics and Precision Engineering
ISSN	1004924X
卷号	31 期号:1 页码:78-88
摘要	The analog/digital acquisition module for intermediate frequency（IF）signal acquisition is the fundamental component of frequency-modulated continuous-wave（FMCW）lidar. Parameters such as the signal-to-noise ratio（SNR），signal-to-noise and distortion ratio（SINAD），and spurious-free dynamic range are major indicators of the alternating current characteristics of the data acquisition signal chain and directly determine the key indicators of FMCW lidar，including the detection range and ranging accuracy. First，this study designed an IF signal acquisition module for FMCW lidar，where the obtained SNR and SINAD were 49. 13 dB and 48. 90 dB，respectively. Second，the study investigated the noise characteris⁃ tics of FMCW lidar，identified the system noise source as the phase noise of the sampling clock，and im⁃ proved the SNR and SINAD by 11. 38 dB and 11. 32 dB，respectively，by introducing digital filters，which theoretically increased the detection range of FMCW lidar by 3. 7 times. System noise can be re⁃ duced by using cosmetic clock chips，and the SNR can be improved by 8. 65 dB. Finally，an optical phased-array FMCW lidar system was built to verify the effectiveness of the data sampling module and to conduct 40-m range distance detection under a maximum measurement error of 7. 7 cm. The study deter⁃ mined that the FMCW lidar’s maximum detection range was 133. 67 m. © 2023 Chinese Academy of Sciences. All rights reserved.
DOI	10.37188/OPE.20233101.0078
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收录类别	ei
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文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/68234
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	S. Zhao, Y. Wang, M. Zhang, L. Qin, J. Song and L. Wang. FMCW Lidar and noise analysis of data acquisition signal chain[J]. Guangxue Jingmi Gongcheng/Optics and Precision Engineering,2023,31(1):78-88.
APA	S. Zhao, Y. Wang, M. Zhang, L. Qin, J. Song and L. Wang.(2023).FMCW Lidar and noise analysis of data acquisition signal chain.Guangxue Jingmi Gongcheng/Optics and Precision Engineering,31(1),78-88.
MLA	S. Zhao, Y. Wang, M. Zhang, L. Qin, J. Song and L. Wang."FMCW Lidar and noise analysis of data acquisition signal chain".Guangxue Jingmi Gongcheng/Optics and Precision Engineering 31.1(2023):78-88.

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