| 陈敬军,陆佶人.被动声纳线谱检测技术综述[J].声学技术,2004,(1):57~60 |
| 被动声纳线谱检测技术综述 |
| A review of techniques for detection of line-spectrum in passive sonar |
| 投稿时间：2003-10-08 修订日期：2003-12-25 |
| DOI： |
| 中文关键词: 线谱检测 谱线提取 LOFAR图 被动声纳 |
| 英文关键词: line-spectrum detection spectral lines extraction lofargram passive sonar |
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| 中文摘要: |
| 船舶辐射噪声的功率谱由连续的宽带谱和离散窄带线谱组成。在被动声纳系统中,线谱检测是一个至关重要的问题。本文对线谱检测技术进行了综述。该领域最新进展表明,为了能够在低信噪比下检测和提取线谱,往往采用两种或多种组合方法,并且利用了多个时刻的数据。 |
| 英文摘要: |
| The spectrum of radiated noise from ships consists of a continuous broadband spectrum and a discrete narrow-band line-spectrum. A crucial issue in a passive sonar system is detection of the spectral lines. A review of techniques for detection of spectral lines is given in this paper. Recent developments in this field show that, in order to detect spectral lines at a very low signal to noise ratio, combination of more than one method is usually adopted, and multiple frame spectra are used. |
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