2-D Phase Unwrapping in DAS with Transport of Intensity Equation

• DOI: 10.1364/ofs.2023.th6.20
• Publication Date: 2024-02-15T16:24:05Z
• Authors: Jianhui Sun; Yuyao Wang; Jialei Zhang; Yongxin Liang; Gulan Zhang; Anchi Wan; Shibo Zhang; Zhenyu Ye; Yinze Zhou; Qiang Jing; Yunjiang Rao; Hua Wang; Zinan Wang

We introduce a 2-D phase unwrapping algorithm to DAS, surpassing dynamic range limits of conventional methods. Considering inter-trace phases, it enhances unwrap ability, mitigating stripe error caused by low SNR.