基于参数均衡的大规模光纤水听器阵列设计

Design of large-scale fiber-optic hydrophone array systems based on parameter equalization

针对当前水声目标探测使用需求,以及光纤水听器阵列大规模组阵时其均衡性难以保证的问题,开展了大规模阵列光学参数均衡、PGC调制解调等关键技术研究,并进行了大规模光纤水听器阵列光学参数均衡控制设计,应用PGC调制解调技术有效解决了信号衰落。阵列测试表明:阵列元件参数挑选范围扩大的同时,512基元阵列的相位一致性较好;设计的光纤拖曳系统在测向和测距方面具有较好的探测性能,为光纤水听器的技术应用与工程化研制提出了措施建议。

In response to the current demand of underwater acoustic target detection,and in view of the difficulty in guaranteeing the balance of large-scaled fiber-optic hydrophone array,such key technologies as large-scale array optical parameter equalization,PGC modulation and demodulation were studied.The optical parameters equalization design of large-scale optical fiber hydrophone array was carried out.The array performance test shows that the performance of large-scale array is effectively maintained while the range of array component parameter selection is expanded.The experiments in the practical environment at sea also verify that the 512 element fiber line array has good detection performance in direction finding and ranging.Consequently,some suggestions for technical application and engineering development are put forward.