| 郑恩明,陈新华 孙长瑜 余华兵.改进的高分辨逆波束形成算法在圆阵中应用[J].,2013,32(6):457-463 |
| 改进的高分辨逆波束形成算法在圆阵中应用 |
| Application of improved high-resolution inverse beam forming algorithm to circle array |
| 投稿时间：2013-06-25 修订日期：2013-10-29 |
| 中文摘要: |
| 针对常规逆波束形成不能突破瑞利限问题,相关学者提出一种基于自回归模型的逆波束形成算法来改善逆波束形成算法的方位分辨率；但在实际应用中,该算法的检测性能比逆波束形成算法差。对此,本文通过修改自回归模型来改善基于自回归模型的逆波束形成算法的检测性能,并将其应用于圆阵中。改善后的算法在保证对目标方位高分辨率检测的同时,在较低信噪比条件下可实现对目标方位的有效检测。理论分析和数值仿真验证了改善后的算法相比基于自回归模型的逆波束形成算法在检测性能提高了近10log(2K 1)dB( 2K 1 为虚拟线阵阵元数) 。 |
| 英文摘要: |
| To solve the problem that the inverse beam-forming (IBF) cannot break the Rayleigh limit, some scholars suggest to use autoregressive (AR) model to improve the bear resolution for inverse beam-forming. However, the detection performance of automatism regression_ inverse beam-forming (AR_IBF) is not better than that of IBF in the practical application. In this paper, the modified automatism regression_ inverse beam-forming (MAR_IBF) enhanced the AR_IBF detection performance by modifying the AR. Theory analysis and numerical simulation show that the detection performance of MAR_IBF increased by near10log(2K 1)dB( 2K 1 being number of dummy array elements) compared to that of AR_IBF. |
| DOI：10.11684/j.issn.1000-310X.2013.06.005 |
| 中文关键词: 阵列信号处理技术,圆阵,高分辨逆波束形成,检测性能 |
| 英文关键词: Array signal processing techniques, Circle array, High-resolution inverse beam-forming, Detection performance |
| 基金项目:国家海洋公益性行业科研专项经费项目(20100500106) |
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