| 合成孔径声呐相关合成算法中的伪目标问题 |
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| 引用本文： | 李蓉,孙超,杨益新.合成孔径声呐相关合成算法中的伪目标问题[J].声学技术,2003,22(1):33-36. |
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| 作者姓名： | 李蓉 孙超 杨益新 |
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| 作者单位： | 西北工业大学声学工程研究所,西安,710072 |
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| 摘 要： | 本文将用于合成孔径声纳成像的相关合成算法推广到合成孔径技术的伪目标抑制当中，放宽了不出现伪目标的采样条件，从而提高了声纳运动速度，改善了图像的质量，提高了声纳的成像率。如果声纳采样间距已定，则相应的声阵物理长度可以缩短，从而使得方位分辨率有所提高，计算机仿真结果验证了所提思路的有效性。
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| 关 键 词： | 声呐 合成孔径 伪目标 相关合成算法 采样率 |
| 文章编号： | 1000-3630(2003)01-0033-04 |
| 收稿时间： | 2001/3/5 0:00:00 |
| 修稿时间： | 2001/8/23 0:00:00 |
On alias target problem in coherent addition algorithm of synthetic aperture sonar |
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| LI Rong,SUN Chao and YANG Yi-xin.On alias target problem in coherent addition algorithm of synthetic aperture sonar[J].Technical Acoustics,2003,22(1):33-36. |
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| Authors: | LI Rong SUN Chao and YANG Yi-xin |
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| Affiliation: | Institute of Acoustic Engineering, Northwestern Polytechnical University, Xi''an 710072, China;Institute of Acoustic Engineering, Northwestern Polytechnical University, Xi''an 710072, China;Institute of Acoustic Engineering, Northwestern Polytechnical University, Xi''an 710072, China |
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| Abstract: | It is shown in this paper that the sampling rate is relaxed in the coherent addition algorithm for synthetic aperture sonar without alias targets.Thus the sonar can move faster,the image quality is improved,and the mapping rate is increased.If the sampling interval is fixed,the length of the physical aperture can be reduced,and the azimuth resolution is improved. |
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| Keywords: | sonar synthetic aperture alias targets coherent addition algorithm sampling rate |
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