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从系统设计的角度,在介绍干涉型光纤水听器阵列采用基于相让产生载波(PGC)技术的频分多路复用方案时的阵列构型、调制解调技术的基础上,通过对阵列输出信号频谱进行理论分析入手,重点揭示了在J×K阵列中阵列单元数N、可测信号幅度D和可测信号频率ωs之间的相互关系,以及制约N、D、ωs增大的关键因素。特别分析了最大可检测光相移及其随频率变化的规律。并用实验验证了有关理论分析得出的结果。
From the point of view of system design, based on the array configuration, modulation and demodulation techniques when introducing interference-type fiber hydrophone arrays based on phase-shift multiplexing (PGC) technology, The theoretical analysis of the signal spectrum is carried out. The relationship between the number of array elements N, the measurable signal amplitude D and the measurable signal frequency ωs in J × K array and the key factors restricting the increase of N, D and ωs are revealed. . In particular, the phase shift of the maximum detectable light and its variation with frequency are analyzed. The experimental results verify the theoretical analysis.