• Chinese Journal of Lasers
  • Vol. 51, Issue 8, 0810003 (2024)
Junqi Yang1、2, Zhaoyong Wang1、2、3、4、*, Yifan Liu1、2, Shuai Luwei1、2, Kan Gao1, Qing Ye1、2、3、**, and Haiwen Cai2
Author Affiliations
  • 1Key Laboratory of Space Laser Communication and Detection Technology, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
  • 2Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
  • 3Shanghai Zhongke Shenguang Optoelecronic Industry Co., Ltd., Shanghai 201815, China
  • 4Shanghai Sheshan National Geophysical Observatory, Shanghai 201602, China
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    DOI: 10.3788/CJL231054 Cite this Article Set citation alerts
    Junqi Yang, Zhaoyong Wang, Yifan Liu, Shuai Luwei, Kan Gao, Qing Ye, Haiwen Cai. Distributed Optical Fiber Multi‐Dimensional Localization with Large Detection Aperture Based on Phase Correction[J]. Chinese Journal of Lasers, 2024, 51(8): 0810003 Copy Citation Text show less
    Schematic diagram of DAS target source response in near field
    Fig. 1. Schematic diagram of DAS target source response in near field
    Confirmation experiment. (a) Experiment setup of target source localization test; (b) structure of optical cable
    Fig. 2. Confirmation experiment. (a) Experiment setup of target source localization test; (b) structure of optical cable
    Delay among different sensing channels
    Fig. 3. Delay among different sensing channels
    TDOA pre-estimation results for different numbers of sensing channels
    Fig. 4. TDOA pre-estimation results for different numbers of sensing channels
    Phase shift of sensing array
    Fig. 5. Phase shift of sensing array
    Spatial spectrum estimation. (a) Before phase correction; (b) after phase correction
    Fig. 6. Spatial spectrum estimation. (a) Before phase correction; (b) after phase correction
    Change of Rrmse with MUSIC iterations
    Fig. 7. Change of Rrmse with MUSIC iterations
    Localization results of target source. (a) Spatial spectrum estimation; (b) locations in rectangular coordinate system
    Fig. 8. Localization results of target source. (a) Spatial spectrum estimation; (b) locations in rectangular coordinate system
    Sensing channels groupDistance r /mAngle θ /(°)
    1239.649065.8268
    13516.908361.4332
    14719.381764.6476
    15940.021553.4207
    17937.799654.2196
    18954.633749.0911
    Average29.732358.1065
    Table 1. TDOA pre-estimation results of three different sensing channels
    MethodRef.Layout requirementWARRelative error /%
    TDOA optimization85∶18.30
    Sparse beamforming (ASP)10Large array aperture (8.63 km)7∶10.83
    MUSIC (ASP)12Wound fiber100∶134.48
    MUSIC (ASP)1125∶13.14
    Proposed8∶14.09
    Table 2. Comparison among proposed method and existing methods
    Junqi Yang, Zhaoyong Wang, Yifan Liu, Shuai Luwei, Kan Gao, Qing Ye, Haiwen Cai. Distributed Optical Fiber Multi‐Dimensional Localization with Large Detection Aperture Based on Phase Correction[J]. Chinese Journal of Lasers, 2024, 51(8): 0810003
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