干涉型光纤水听器PGC解调方案的研究-应用科技-哈尔滨工程大学.PDF

33 6 V o l. 33, l . 6 2006 6 A pp lied Science and T echno logy Jun. 2006 : 1009- 671X ( 2006 06- 0110 - 05 PGC 岳士举, 丁 昕, 曹家年 (哈尔滨工程大学 信息与通信工程学院, 黑龙江 哈尔滨 15000 1 : , , , . PGC , PG C . : ; PGC ( ; : TN 915. 6 : A Research on PGC dem odulation of interferential fiber-optic hydrophone YUE Sh i-ju, D ING X in, CAO Jia-n ian ( Schoo l of Inform a tion and Comm un ication Eng ineering, H arb in Eng inee ring U niversity, H arb in 150001, Ch ina Abs tract: F iber-optic hydrophone is a subaqueou s sound sensor w hich is built on optical fiber and optoelectron ics. By h igh sensitiv ity fiber-optic interferentia l m easurem ent, a w ater sound signal is converted to aoptic signa,l and sent to the signal processing system to pick-up the sound signal inform ation. T he phase generated carrier in signa l dem odu lation of fiber-optic interferen tial hydrophone is stud ied and the subaqueous sound detection is conducted u- sing m ixed A /D PG C dem odu la tion m ode. K eyword s: f iber-opt ic hydrophone; PGC dem odulation; sensor 1 光纤水听器的光路及 PGC 检测方 . 案的实现原理 M ichelson , . , 2 ( FRM , , , , . 1. , , , . PGC . PGC , PGC , 1 M iche lson . M ichelson I = A + B cos(CcosX t+ U( t) ). ( 1)