| 李海峰,马力,曾娟,刘海军,彭大勇,赵文耀.不同权矢量下水声低频相控垂直阵远程探测性能的研究[J].,2014,33(2):130-137 |
| 不同权矢量下水声低频相控垂直阵远程探测性能的研究 |
| Long range detection performance of the underwater acoustic low-frequency phased vertical line array emitted by different weight vectors |
| 投稿时间：2013-05-22 修订日期：2014-02-28 |
| 中文摘要: |
| 理论分析水声低频相控垂直线阵不同权矢量远程探测性能并仿真研究。文中首先依据绝热简正波理论，导出相控垂直线阵远程探测的声传播理论模型。在此基础上，给出了相控阵权矢量与目标参数估计方差理论下限Cramer-Rao界（CRB）之间的对应关系。其次，利用KRAKEN软件求解仿真环境下波动方程的本征值和本征函数，数值计算比较相控阵七种发射权矢量下远程探测效能。结果表明，相控垂直阵在发送1号模权矢量时，具有较优的远程探测性能和参数估计方差下限。 |
| 英文摘要: |
| The theory and simulation studies were developed to analyze the long range detection performance of the low-frequency underwater acoustic phased vertical line array emitted by different weight vectors. Firstly, according to the adiabatic normal mode theory, the sound propagation model of the phased vertical line array for the long range detection was derived. Based on the model, the relationship between the weight vector and the Cramer-Rao(CRB) lower bound of variance was set up theoretically. Secondly, using the KRAKEN software to solve the wave equation’s eigenvalues and eigenfunctions of the certain environment, the long range detection performance of the phased array emitted by seven weight vectors was computed according to the numerical results. The results show that the phased array emitted by the No.1 normal mode was better than the others for the long range detection and the CRBs. |
| DOI：10.11684/j.issn.1000-310X.2014.02.006 |
| 中文关键词: 相控阵,权矢量,场控制,目标探测 |
| 英文关键词: phased array, weight vector, sound field control, target detection |
| 基金项目: |
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| 摘要点击次数: 2131 |
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