| 王文生,杨秀庭.线列阵声纳近场常规波束形成的理论性能[J].声学技术,2009,(6):729~733 |
| 线列阵声纳近场常规波束形成的理论性能 |
| Theoretical performance of near-field conventional beamforming by using linear array sonar |
| 投稿时间：2008-12-12 修订日期：2009-04-27 |
| DOI： |
| 中文关键词: 线列阵声呐 被动定位 波束形成 |
| 英文关键词: linear array sonar passive localization beamforming |
| 基金项目: |
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| 中文摘要: |
| 研究了线列阵声纳应用常规波束形成方法进行目标被动定位的理论性能。在反潜战中,重型热动力鱼雷是潜艇面临的重要威胁。为对鱼雷实施被动定位,推导了常规波束形成方法目标被动定位的渐进方差,并与克拉美-劳下界进行了比对分析。此外,通过数值方法研究了信号强度、目标位置、基阵孔径和积分时间等参数对被动定位性能的影响。结果表明:应用现有的声纳设备(如潜艇舷侧阵)来解决中等距离的鱼雷被动定位问题是完全可能的。 |
| 英文摘要: |
| The performance of passive localization via conventional beamforming(CBF) by using uniform linear array has been investigated in this paper.In order to locate the noisy underwater target-the heavy thermal powered torpedoes usually confronted in anti-submarine war(ASW),the asymptotic estimate error of CBF is analyzed and compared with the Cramer-Rao bound(CRB) to show the passive localization performance,thereafter,the factors such as the signal strength,target location,array aperture and observation time have also been investigated via numerical simulations.The results show that the middle-range passive localization of torpedoes can be probably solved by using the existing SONAR equipment(such as flank array SONAR). |
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