Optimizing the Demodulation Method for DAS System Based on Point-Backscattering-Enhanced Fiber. - Caiyun Li; Hong-Kun Zheng; Lingmei Ma; Chen Zhu; Yiyang Zhuang; Wei Peng; Jianguo Wang; Weiwang Hu; Yunjiang Rao (IEEE Trans. Instrum. Meas., 2024)