| Dopplerlet变换推广及其在主动声纳处理中的应用 |
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| 引用本文： | 梁红,刘劲波.Dopplerlet变换推广及其在主动声纳处理中的应用[J].弹箭与制导学报,2009,29(1). |
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| 作者姓名： | 梁红 刘劲波 |
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| 作者单位： | 西北工业大学航海学院,西安,710072 |
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| 摘 要： | 针对水下高速运动目标的主动探测问题,引入了Dopplerlet变换。根据运动目标回波的特点提出了主动Dopplerlet原子,并分析了基于主动Dopplerlet变换的自适应匹配塔形分解算法,克服了Dopplerlet变换在被动信号处理中声源频率变化引起误差增大和时间窗宽度选取困难的问题。最后将算法应用于高斯白噪声和高斯色噪声背景中运动目标的检测和速度距离的估计,取得了较好的结果。
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| 关 键 词： | Dopplerlet信号 Dopplerlet变换 主动探测 高速运动目标 |
Extension of Dopplerlet Transform and Application in Active Sonar Detection |
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| LIANG Hong,LIU Jinbo.Extension of Dopplerlet Transform and Application in Active Sonar Detection[J].Journal of Projectiles Rockets Missiles and Guidance,2009,29(1). |
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| Authors: | LIANG Hong LIU Jinbo |
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| Affiliation: | School of Marine Engineering;Northwestern Polytechnical University;Xi'an 710072;China |
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| Abstract: | Aiming at active detection of underwater fast-moving object,Dopplerlet transform is introduced in the paper.According to the echo characteristics of moving targets,initiative Dopplerlet atom is proposed,and the matching pursuits algorithm based on initiative Dopplerlet Transform is analyzed.The algorithm overcomes error problem which caused by frequency changes in Dopplerlet transform used in the passive acoustic signal processing.Finally,the algorithm is applied to detect fast-moving target and estimate it... |
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| Keywords: | Dopplerlet signal Dopplerlet transform active detection fast-moving object |
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