| 一种快速水声目标波达方向估计方法 |
| |
| 引用本文： | 王彪,李超,李宇,黄海宁.一种快速水声目标波达方向估计方法[J].声学学报,2014,39(5):544-548. |
| |
| 作者姓名： | 王彪 李超 李宇 黄海宁 |
| |
| 作者单位： | 1. 江苏科技大学电子信息学院 镇江 212003; |
| |
| 基金项目： | 国家自然科学基金(11204109,10904160);江苏高校优势学科建设工程项目;江苏省高校自然科学基金(12KJB510003)资助 |
| |
| 摘 要： | 以基追踪为重构算法的水声目标波达方向估计方法在实际的应用中往往运算速度较慢,针对这一问题,在分析水声目标空间稀疏特性的基础上,结合压缩感知理论框架下波达方向估计的特点,提出一种快速水声目标波达方向估计方法。该方法通过逐步减小逼近参数的方式来得到l0范数最优解,实现水声目标信号的波达方向估计。通过计算机仿真从成功率、运算时间、分辨角度等多个方面与基追踪算法进行比较分析,实验表明:在成功率和分辨角度上所提出算法与基追踪算法性能相当,但运算时间却仅仅是基追踪算法的1/11。
|
| 关 键 词： | 波达方向估计 运算时间 追踪算法 重构算法 计算机仿真 运算速度 数法 稀疏表示 信号空间 高斯函数 |
| 收稿时间： | 2012-08-21 |
A fast direction of arrival estimation method for underwater acoustic target |
| |
| Affiliation: | 1. School of Electronic and Information, Jiangsu University of Science and Technology Zhenjiang 212003;2. Institute of Acoustics, Chinese Academy of Sciences Beijing 100190 |
| |
| Abstract: | The underwater acoustic target direction of arrival (DOA) estimation methods which using basic pursuit as reconstruct algorithm were slower in the process of computation. Considering the problem, a fast direction of arrival estimation method was proposed by analyzing the underwater target space sparsity, which utilizes the characteristics of compressed sensing framework of DOA. This method obtained the optimal solution through l0 norm by reducing the parameters of the approximation gradually, then achieved the direction of arrival of underwater acoustic target. Simulation results compared the method performance with basic pursuit algorithm by different facets such as success rate, operation time, resolution, and showed that its success rate and resolution is roughly equal to the basic pursuit algorithm, but the computation time was reduced more. |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《声学学报》浏览原始摘要信息 |
|
点击此处可从《声学学报》下载全文 |
|
