| 空时耦合项对空时自适应处理的影响 |
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| 引用本文： | 吕维,王志杰,李建辰,王明洲,杨宝民,胡桥. 空时耦合项对空时自适应处理的影响[J]. 西安电子科技大学学报(自然科学版), 2012, 39(2): 207-212. DOI: 10.3969/j.issn.1001-2400.2012.02.034 |
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| 作者姓名： | 吕维 王志杰 李建辰 王明洲 杨宝民 胡桥 |
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| 作者单位： | 中国船舶重工集团公司第705研究所;水下信息与控制重点实验室 |
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| 基金项目： | 陕西省科学技术研究发展计划资助项目(2010KJXX-09);国家重点实验室基金资助项目 |
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| 摘 要： | 为了利用混响谱的扩展和空-时耦合特性,采用空时自适应处理(STAP)理论进行混响抑制和运动目标检测,提出了应用于水下声呐环境的空时自适应修正方法.结合雷达目标回波模型分析了空时自适应的原理;分析混响空-时耦合项,对空时自适应方法进行修正,并提出了应用空-时耦合导向矢量进行空时处理;将该修正方法用于最优处理和目标检测.仿真结果表明,修正空时自适应方法有利于水下目标检测,应用空-时耦合导向矢量有助于提高目标方位估计能力.
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| 关 键 词： | 声呐混响 空时自适应 回波模型 空-时耦合项 |
| 收稿时间： | 2011-12-06 |
Influence of the space-time coupling term on STAP |
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| L Wei,WANG Zhijie,LI Jianchen,WANG Mingzhou,YANG Baomin,HU Qiao. Influence of the space-time coupling term on STAP[J]. Journal of Xidian University, 2012, 39(2): 207-212. DOI: 10.3969/j.issn.1001-2400.2012.02.034 |
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| Authors: | L Wei WANG Zhijie LI Jianchen WANG Mingzhou YANG Baomin HU Qiao |
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| Affiliation: | (1. The 705th Research Inst., China Shipbuilding Industry Corp., Xi'an 710075， China;2. Sci. and Tech. on Underwater Info. and Control Lab., Xi'an 710075， China) |
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| Abstract: | In order to use the power spectrum propagation characteristics and adopt the theory of STAP for reverberation suppression and moving object detection,an improved method of STAP for sonar is proposed.Firstly,the principle of STAP is analyzed according to the echo model of radar.Secondly,comparing the echo models of sonar and radar,this method of STAP is presented and the Space-time coupling steering vector is used in space time processing.Finally,the proposed method of STAP is applied in space time processing and object detection.Simulation results illustrate that the modified method of STAP is beneficial to underwater object detection,and that applying the space-time coupling steering vector can increase the accuracy of the direction estimation of targets. |
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| Keywords: | reverberation space time adaptive processing echo signal model space-time coupling term |
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