| 基于实孔径成像的水下高速小目标末弹道 测量方法 |
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| 引用本文： | 张思宇,何心怡,王磊,祝琳.基于实孔径成像的水下高速小目标末弹道 测量方法[J].应用声学,2019,38(3):452-457. |
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| 作者姓名： | 张思宇 何心怡 王磊 祝琳 |
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| 作者单位： | 海军研究院,海军研究院 北京,中国科学院声学研究所 北京,海军研究院 |
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| 摘 要： | 在没有合作声信标和水下弹道测量系统配合的条件下，传统的基线定位法难以测量水下高速小目标末弹道。文中提出了一种测量高速小目标末弹道的方法，该方法通过在靶标上安装实孔径声学成像系统，发射双曲调频信号保持系统在目标回波多普勒偏移量较大时的输出幅值稳定，并采用频域宽带信号处理技术修正多普勒偏移造成的目标方位测量误差和抑制混响干扰，经过湖上试验，系统获取了较清晰的声学图像，准确分辨出目标位置，能够较精确地测量高速小目标末弹道。
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| 关 键 词： | 声学成像 末弹道 非合作目标 |
| 收稿时间： | 2018/9/11 0:00:00 |
| 修稿时间： | 2019/4/26 0:00:00 |
A real aperture acoustic imaging system based on circular array for measuring the terminal trajectory of high speed small targets |
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| zhang si yu,HE Xinyi,WANG Lei and ZHU Lin.A real aperture acoustic imaging system based on circular array for measuring the terminal trajectory of high speed small targets[J].Applied Acoustics,2019,38(3):452-457. |
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| Authors: | zhang si yu HE Xinyi WANG Lei and ZHU Lin |
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| Institution: | Naval Research Academy,Naval Research Academy, Beijing,Institute of Acoustics, Chinese Academy of Sciences, Beijing and Naval Research Academy, Beijing |
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| Abstract: | Without the cooperation of underwater trajectory measurement system, the traditional baseline positioning method is difficult to realize the trajectory measurement of non-cooperative underwater targets. A method for measuring the terminal trajectory of high-speed small target is presented in this paper. By installing a disc-shaped real aperture acoustic imaging system on the target, the output amplitude of the transmitting hyperbolic FM signal can be kept stable when the target echo Doppler offset is large, and the frequency domain broadband beamforming technique is used to suppress noise and reverberation interference. Through Lake experiment, the system obtains clear acoustic image, and can measure the terminal trajectory of small target accurately. |
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| Keywords: | sonar imaging final ballistics non-cooperative targets |
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