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中文摘要：
基于对Sagnac干涉仪在外界瞬变信号影响下响应特性的理论分析，提出了一种基于光纤Sagnac干涉仪的非接触式测量技术.针对陷波波形的特性，提出了相应的解调技术.实验结果表明，基于Sagnac干涉仪的非接触式测量技术不仅能识别瞬变信号，同时能实现对信号源的良好定位，相对定位准确度达到1.5%.
英文摘要：
Based on theoretical analysis of Sagnace interferometer, a noncontact optical fiber measuring technology is proposed. The related demodulation technique is developed in accordance with the characteristics of trap wave. The results show that, the noncontact optical fiber measuring technology based on Sagnac interferometer can realize the identification of transient signal,and realize the location of sound signal source according with the relative location precise of 1.5%.
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