Decoupling of temporal/spatial broadening effects in Doppler wind LiDAR by 2D spectral analysis

doi:10.1088/1674-1056/ad10fd

中国物理B ›› 2024, Vol. 33 ›› Issue (3): 34214-034214.doi: 10.1088/1674-1056/ad10fd

Decoupling of temporal/spatial broadening effects in Doppler wind LiDAR by 2D spectral analysis

Zhen Liu(刘珍)^1,2, Yun-Peng Zhang(张云鹏)^1,†, Xiao-Peng Zhu(竹孝鹏)¹, Ji-Qiao Liu(刘继桥)¹, De-Cang Bi(毕德仓)^1,2, and Wei-Biao Chen(陈卫标)^1,2,‡

1 Space Laser Engineering Department, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China;
2 Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China

收稿日期:2023-10-20 修回日期:2023-11-21 接受日期:2023-11-30 出版日期:2024-02-22 发布日期:2024-03-06
通讯作者: Yun-Peng Zhang, Wei-Biao Chen E-mail:zhangyunpeng@siom.ac.cn;wbchen@siom.ac.cn
基金资助:
Project supported by the Shanghai Science and Technology Innovation Action (Grant No. 22dz1208700).

Decoupling of temporal/spatial broadening effects in Doppler wind LiDAR by 2D spectral analysis

Zhen Liu(刘珍)^1,2, Yun-Peng Zhang(张云鹏)^1,†, Xiao-Peng Zhu(竹孝鹏)¹, Ji-Qiao Liu(刘继桥)¹, De-Cang Bi(毕德仓)^1,2, and Wei-Biao Chen(陈卫标)^1,2,‡

1 Space Laser Engineering Department, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China;
2 Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China

Received:2023-10-20 Revised:2023-11-21 Accepted:2023-11-30 Online:2024-02-22 Published:2024-03-06
Contact: Yun-Peng Zhang, Wei-Biao Chen E-mail:zhangyunpeng@siom.ac.cn;wbchen@siom.ac.cn
Supported by:
Project supported by the Shanghai Science and Technology Innovation Action (Grant No. 22dz1208700).

摘要/Abstract

摘要： Pulse echo accumulation is commonly employed in coherent Doppler wind LiDAR (light detection and ranging) under the assumption of steady wind. Here, the measured spectral data are analyzed in the time dimension and frequency dimension to cope with the temporal wind shear and achieve the optimal accumulation time. A hardware-efficient algorithm combining the interpolation and cross-correlation is used to enhance the wind retrieval accuracy by reducing the frequency sampling interval and then reduce the spectral width calculation error. Moreover, the temporal broadening effect and spatial broadening effect are decoupled according to the strategy we developed.

关键词: Doppler wind LiDAR, spectral analysis, hardware efficiency, spectrum broadening effects

Abstract: Pulse echo accumulation is commonly employed in coherent Doppler wind LiDAR (light detection and ranging) under the assumption of steady wind. Here, the measured spectral data are analyzed in the time dimension and frequency dimension to cope with the temporal wind shear and achieve the optimal accumulation time. A hardware-efficient algorithm combining the interpolation and cross-correlation is used to enhance the wind retrieval accuracy by reducing the frequency sampling interval and then reduce the spectral width calculation error. Moreover, the temporal broadening effect and spatial broadening effect are decoupled according to the strategy we developed.

Key words: Doppler wind LiDAR, spectral analysis, hardware efficiency, spectrum broadening effects

中图分类号: (Remote sensing; LIDAR and adaptive systems)

42.68.Wt

42.79.Qx (Range finders, remote sensing devices; laser Doppler velocimeters, SAR, And LIDAR)

Zhen Liu(刘珍), Yun-Peng Zhang(张云鹏), Xiao-Peng Zhu(竹孝鹏), Ji-Qiao Liu(刘继桥), De-Cang Bi(毕德仓), and Wei-Biao Chen(陈卫标). Decoupling of temporal/spatial broadening effects in Doppler wind LiDAR by 2D spectral analysis[J]. 中国物理B, 2024, 33(3): 34214-034214.

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Decoupling of temporal/spatial broadening effects in Doppler wind LiDAR by 2D spectral analysis

Decoupling of temporal/spatial broadening effects in Doppler wind LiDAR by 2D spectral analysis

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