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    科学领域:

    • 光学工程是指光学工程.
    • 光纤传感传感器是指光纤传感器.
    • 信号处理 信号处理

    背景情况:

    • 光频域反射计 (OFDR) 是一种用于分布式传感的强大技术.
    • 高空间分辨率的形状传感通常需要广泛的波长扫描范围,限制了实际应用.
    • 多核纤维 (MCF) 提供了增强传感能力的潜力,但也带来了解调挑战.

    研究的目的:

    • 为OFDR提出和演示一种新的波长转移解调方法,即适应频谱方法 (ASM).
    • 为了实现高空间分辨率的二维 (2D) 形状传感与狭窄的扫描范围.
    • 在应变解调精度和形状重建准确性方面分析ASM的性能.

    主要方法:

    • 开发适应频谱方法 (ASM) 用于OFDR波长转移调节.
    • 对MCF传感芯中应变段的平方根平均误差 (RMSEs) 的分析.
    • 使用ASM重建2D形状并分析位置偏差.
    • 执行ASM的GPU并行计算,用于性能评估.

    主要成果:

    • 与传统方法相比,ASM在光谱相似性方面取得了显著的改进.
    • 在MCF的外部传感芯中,应变分布在2.1mm空间分辨率下成功实现了解调.
    • 对各种曲率半径 (20-50毫米) 进行了准确的二维形状重建.
    • 与CPU串行计算相比,GPU并行缩短了8.4倍的计算时间.

    结论:

    • 拟议的自适应光谱方法 (ASM) 是有效的高空间分辨率的2D形状传感使用OFDR与狭窄的扫描范围.
    • 在多核纤维传感中,ASM增强了光谱相似性和应变解调精度.
    • GPU 加速显著提高了 ASM 的计算效率,使其适合实时应用.