| 唐建生,江向东,潘悦,皇甫立.声纳输出的弱目标信息提取方法仿真分析[J].声学技术,2010,(1):37~40 |
| 声纳输出的弱目标信息提取方法仿真分析 |
| Simulative analysis of extracting weak target information from sonar outputs |
| 投稿时间：2008-12-22 修订日期：2009-03-11 |
| DOI： |
| 中文关键词: 弱目标提取 仿真分析 声纳输出 |
| 英文关键词: extracting weak target simulation analysis sonar outputs |
| 基金项目: |
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| 中文摘要: |
| 针对存在艇外平台强干扰的情况,对波束域MVDR(b-MVDR)和后置波束形成干扰抵消器(PIC)的弱目标提取能力进行了仿真分析。考虑到艇外平台与目标往往处于同一波束的实际情况,提出首先采用密集波束形成,再进行弱目标提取的方法。仿真结果表明:对艇外平台与目标处于同一波束的情况,PIC的目标分辨能力更强;在干扰较强时,PIC方法表现出更强的弱目标提取能力,但随信干比的增加其能力不断降低;而b-MVDR方法则在各种信干比下均具有良好的性能。 |
| 英文摘要: |
| In many cases the outside-ship-platform becomes strongly jammed,which makes the ship's sonar hard to detect weak targets.Two methods for extracting weak target information from sonar outputs,the beamspace MVDR (b-MVDR) and the post-beamformer interference canceller (PIC),are analyzed through computer simulations.And simulation results show that the PIC has the improved resolution performance over the b-MVDR,but the PIC's capability to extract weak target decreases as the signal-to-interference ratio (SIR) increases.However the b-MVDR has better performance in all situations. |
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