| 干涉型光纤水听器数字化外差检测方法动态范围上限研究 |
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| 引用本文： | 张楠,孟洲,饶伟,熊水东.干涉型光纤水听器数字化外差检测方法动态范围上限研究[J].光学学报,2011(8):84-90. |
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| 作者姓名： | 张楠 孟洲 饶伟 熊水东 |
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| 作者单位： | 国防科技大学光电科学与工程学院; |
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| 基金项目： | 高等学校博士学科点专项科研基金(20104307110020)资助课题 |
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| 摘 要： | 阐述了干涉型光纤水听器外差检测的基本原理,对干涉型光纤水听器数字化外差检测方法动态范围上限进行了研究.理论分析了由外差频率决定的动态范围上限以及反正切、微分-交叉相乘(DCM)两种正交解调算法决定的动态范围上限,并进行了综合对比.分析结果表明,不同的外差频率所能达到的动态范围上限不同;相同的外差频率结合不同的正交解调算...
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| 关 键 词： | 光纤光学 光纤水听器 信号检测 外差 动态范围上限 |
Analysis on Upper Limit of Dynamic Range of Fiber Optic Interferometric Hydrophone Using Digital Heterodyne Detection Scheme |
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| Zhang Nan Meng Zhou Rao Wei Xiong Shuidong.Analysis on Upper Limit of Dynamic Range of Fiber Optic Interferometric Hydrophone Using Digital Heterodyne Detection Scheme[J].Acta Optica Sinica,2011(8):84-90. |
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| Authors: | Zhang Nan Meng Zhou Rao Wei Xiong Shuidong |
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| Institution: | Zhang Nan Meng Zhou Rao Wei Xiong Shuidong(College of Optoelectronic Science and Engineering,National University of Defense Technology,Changsha,Hunan 410073,China) |
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| Abstract: | The principle of fiber optic interferometric hydrophone using heterodyne detection scheme is introduced and the upper limit of dynamic range of the digital heterodyne detection is analyzed in detail.The upper limits of dynamic range decided by heterodyne frequency and the arctangent or differential cross-multiply(DCM) quadrant demodulation algorithm are analyzed in theory and compared with each other.Analysis results indicate that the upper limit of dynamic range changes with heterodyne frequency.However,wi... |
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| Keywords: | fiber optics fiber optic hydrophone signal detection heterodyne upper limit of dynamic range |
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