潜艇拖曳SQUID天线热噪声分析  

Analysis of thermal noise of submarine towed SQUID antenna

作　　者：周经国[1] 谢慧[2] 陈久元 

机构地区：[1]海司通信部 [2]海军工程大学 [3]海军92325部队

出　　处：《微计算机信息》2009年第20期266-267,共2页Control & Automation

基　　金：基金申请人:谢慧;项目名称:超导技术在大潜深潜艇通信中的应用可行性研究;基金颁发部门:国家863计划基金委(编号不公开)

摘　　要：本文研究利用超导量子干扰器(SQUID)来实现潜艇大潜深状态下对超低频信号的接收。在系统分析超导拖曳天线特性的基础上,详细地论述了超导拖曳天线热噪声的形成机理,讨论了热涨落参量与感应电流等参数对SQUID器件热噪声的影响,提出了通过控制热涨落参数、偏置电流以及外磁通等参数,可将热噪声对超导天线的环路电流和电压的影响大大降低这一降噪有效措施。Super low frequency receive technology of deep submerged submarine communications with SQUID （Superconducting Quantum Interference Devices） was studied. Based on the properties of superconducting towed antennas, the mechanisms of generation thermal noise was studied in detail. The research identifies the roles played by the various contributing factors in the thermal noise of SQUID, such as thermal fluctuation parameters, induced current, etc. Methods to decrease thermal noise and current bias reversal technology were brought forward. The analytic results show that effective methods to decrease thermal noise can be achieved through controlling the thermal fluctuation parameters, bias current, outer flux, etc.

关 键 词：潜艇通信 超低频 SQUID 热噪声 

分 类 号：TN82[电子电信—信息与通信工程]