| 张晓兵,董华玉,玄兆林.水声时变线谱建模与双稳态随机共振分析[J].,2008,27(4):283-287 |
| 水声时变线谱建模与双稳态随机共振分析 |
| Bistable stochastic resonance analysis for time-varying underwater acoustic line-spectrum detection |
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| 中文摘要: |
| 建立了水声时变线谱的模型,将双稳态随机共振系统应用于水声时变线谱信号的检测,考查了随机共振系统对水声环境的适应能力,提出了设计水声线谱检测系统可以利用的外在参数。在信噪比变化、声压起伏、线谱漂移等情况下,仿真结果表明双稳态随机共振系统都能较好地工作。为水声领域新型线谱检测系统的设计提供了依据。 |
| 英文摘要: |
| Time-varying line-spectrum model of the hydrophone end is designed.Bistable stochastic resonance method is proposed for the detection of time-varying underwater acous- tic line-spectrum detection and the parameters which can be used in the detection system are presented.Based on the proposed method,the adaptive capability of the stochastic res- onance detection system to underwater environment is examined.In circumstances like var- ying SNR,fluctuating acoustic pressure and excursive frequency,numerical simulation shows that the detection system works well.This study offers basis for the design of a new type line-spectrum detection instrument in the underwater acoustic domain. |
| DOI：10.11684/j.issn.1000-310X.2008.04.009 |
| 中文关键词: 水声信号检测 时变线谱 随机共振 |
| 英文关键词: Underwater acoustic signal detection Line-spectrum Stochastic resonance |
| 基金项目: |
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