| 锁定放大技术在参量接收阵中的应用 |
| |
| 引用本文： | 黄淳,李颂文.锁定放大技术在参量接收阵中的应用[J].声学技术,2014,33(2):180-183. |
| |
| 作者姓名： | 黄淳 李颂文 |
| |
| 作者单位： | [1]水声对抗技术重点实验室,上海201108; [2]上海船舶电子设备研究所,上海201108 |
| |
| 摘 要： | 为抑制泵波影响,提取参量接收阵中的微弱差频信号,根据微弱信号探测原理,设计了一个基于锁定放大技术的参量接收阵系统。简要介绍了参量接收阵原理,详细描述了锁定放大技术,以及所设计的参量接收阵系统的工作过程,给出泵波比差频高130 dB时的仿真数据。结果表明,采用锁定放大技术后的参量接收阵系统可对接收的差频信号优化约5 dB。
|
| 关 键 词： | 锁定放大技术 参量接收阵 微弱信号探测 |
| 收稿时间： | 2012/12/16 0:00:00 |
| 修稿时间： | 2013/3/29 0:00:00 |
Application of lock-in amplifier technique in parametric acoustic receiving array |
| |
| HUANG Chun and LI Song-wen.Application of lock-in amplifier technique in parametric acoustic receiving array[J].Technical Acoustics,2014,33(2):180-183. |
| |
| Authors: | HUANG Chun and LI Song-wen |
| |
| Affiliation: | HUANG Chun,LI Song-wen(Science and Technology on Underwater Acoustic Antagonizing Laboratory, Shanghai 201108, China;Shanghai Marine Electronic Equipment Research Institute, Shanghai 201108, China) |
| |
| Abstract: | In order to suppress the effect of pump signal on picking up the weak difference-frequency signal in the parametric acoustic receiving array,and according to the principle of weak signal detection,a new kind of parametric receiving system is designed on the basis of lock-in amplifier technique.The principle of parameter acoustic receiving array is described briefly,and the Lock-in amplifier technique as well as the procedure of the designed system is described in detail with the presented simulation data that pump to difference-frequency signal ratio reaches 130dB.The result indicates that the use of lock-in amplifier technique in the parametric acoustic receiving array can optimize the difference-frequency signal by 5dB. |
| |
| Keywords: | lock-in Amplifier technique parametric acoustic receiving array weak signal detection |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《声学技术》浏览原始摘要信息 |
|
点击此处可从《声学技术》下载全文 |
|
