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
- Chinese Journal of Lasers
- Vol. 51, Issue 8, 0810003 (2024)
Fig. 1. Schematic diagram of DAS target source response in near field
Fig. 2. Confirmation experiment. (a) Experiment setup of target source localization test; (b) structure of optical cable
Fig. 3. Delay among different sensing channels
Fig. 4. TDOA pre-estimation results for different numbers of sensing channels
Fig. 5. Phase shift of sensing array
Fig. 6. Spatial spectrum estimation. (a) Before phase correction; (b) after phase correction
Fig. 7. Change of
Fig. 8. Localization results of target source. (a) Spatial spectrum estimation; (b) locations in rectangular coordinate system
|
Table 1. TDOA pre-estimation results of three different sensing channels
|
Table 2. Comparison among proposed method and existing methods
Set citation alerts for the article
Please enter your email address
© Copyright 2018-2021 | Chinese Laser Press. All Rights Reserved 沪ICP备15018463号-20