| 引用本文: | 李一石，陈乐平，安道祥，冯东，周智敏. 基于CSAR图像的目标高度提取方法[J]. 雷达科学与技术, 2022, 20(5): 507-512.[点击复制] |
| LI Yishi, CHEN Leping, AN Daoxiang, FENG Dong, ZHOU Zhimin. A Method for Extracting Target Height Based on CSAR Image[J]. Radar Science and Technology, 2022, 20(5): 507-512.[点击复制] |
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| 摘要: |
| 圆周合成孔径雷达（Circular Synthetic Aperture Radar，CSAR）可以对目标进行360°全方位观测，获得目标全方位散射信息。通过将CSAR成像数据划分成多个子孔径能够直接获取目标高度信息，本文在原有获取目标高度信息的方法基础上，进行了改进和创新，提出了一种新的提取目标高度信息的方法。本文通过对子孔径图像进行高度向投影，在一定程度上提高了计算精度，同时在子孔径选择时，也考虑了子孔径之间的相关性，有效地提高了算法的精确性。最后首次引入自主测量的L波段实测数据对本文所提算法进行验证，证实了该方法的有效性和准确性。 |
| 关键词: 圆周合成孔径雷达 目标高度提取 几何形变 子孔径相关性 |
| DOI：DOI:10.3969/j.issn.1672-2337.2022.05.005 |
| 分类号:TN957.52;TN958 |
| 基金项目:国家自然科学基金（No.62101566, 62101562） |
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| A Method for Extracting Target Height Based on CSAR Image |
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LI Yishi, CHEN Leping, AN Daoxiang, FENG Dong, ZHOU Zhimin
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College of Electronic Science and Technology, National University of Defense Technology, Changsha 410073, China
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| Abstract: |
| The circular synthetic aperture radar (CSAR) can observe the target in 360° and obtain the targets omni-directional scattering information. By dividing the CSAR imaging data into sub-apertures, the target height information can be directly obtained. Based on the original method of obtaining target height information and through improvement and innovation, this paper proposes a new method of extracting target height information. The height projection of the sub-aperture image improves the calculation accuracy to a certain extent. At the same time, the correlation between the sub-apertures is also considered when the sub-aperture is selected, which effectively improves the accuracy of the algorithm. Finally, for the first time, the L-band measured data is introduced for comparison and verification, which confirms the effectiveness and accuracy of the method proposed in this paper. |
| Key words: circular synthetic aperture radar target height extraction geometric deformation subaperture correlation |
