| 引入双程传播损耗的近场大型目标 球面逆投影成像算法研究 |
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| 引用本文： | 孙厚军,李世勇,胡伟东,吕昕.引入双程传播损耗的近场大型目标 球面逆投影成像算法研究[J].电子学报,2009,37(3):449-453. |
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| 作者姓名： | 孙厚军 李世勇 胡伟东 吕昕 |
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| 作者单位： | 北京理工大学信息科学技术学院,北京 100081 |
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| 摘 要： | 球面波双程传播损耗对大型目标近场成像的幅度影响显著,通过引入双程传播损耗补偿,改进了球面逆投影算法,改进后的算法可以明显提高成像的幅度精度.同理,利用双程传播损耗补偿可以得到改进的球面卷积-逆投影算法.二者的成像质量基本相同,但前者的计算量要更小.
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| 关 键 词： | 近场成像 算法 传播损耗 球面逆投影 球面卷积-逆投影 |
| 收稿时间： | 2008-09-24 |
Near Field Imaging Algorithm of the Large Target by Considering Roundtrip Propagation Loss |
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| SUN Hou-jun,LI Shi-yong,HU Wei-dong,LV Xin.Near Field Imaging Algorithm of the Large Target by Considering Roundtrip Propagation Loss[J].Acta Electronica Sinica,2009,37(3):449-453. |
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| Authors: | SUN Hou-jun LI Shi-yong HU Wei-dong LV Xin |
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| Affiliation: | School of Information Science and Technology,Beijing Institute of Technology,Beijing 100081 |
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| Abstract: | The roundtrip propagation loss of spherical wave is remarkable for the near-field imaging of large and complicated targets.The spherical back-projection(SBP)algorithm was modified by introducing a compensation factor for the roundtrip propagation loss.The magnitude precision of the image is increased by the modified algorithm.In the same sense,the spherical convolution back-projection(SCBP)algorithm was also modified.Comparisons of the numerical simulating between the modified SBP and the modified SCBP indi... |
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| Keywords: | near-field imaging algorithm propagation loss spherical back-projection spherical convolution back-projection |
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