| 脉冲相干激光雷达的散斑成像模型及其散斑噪声压缩 |
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| 引用本文： | 蒋立辉,王春晖,王骐,尚铁良. 脉冲相干激光雷达的散斑成像模型及其散斑噪声压缩[J]. 光学学报, 2000, 20(12): 623-1628 |
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| 作者姓名： | 蒋立辉 王春晖 王骐 尚铁良 |
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| 作者单位： | 哈尔滨工业大学光电子技术研究所可调谐激光技术国家重点实验室，哈尔滨 150001 |
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| 摘 要： | 推导了脉冲相干激光雷达的散斑成像模型，证明了脉冲相干激光雷达图像中散斑噪声的乘法性质。根据其统计规律，提出一种新的用于散斑噪声压缩的并行加权均值多方向形态滤波算法。模拟结果表明此算法既有 地压缩了散斑噪声又保持了图像的几何结构，并且通过比较，证明其优于Safa的多方向形态滤波算法。
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| 关 键 词： | 脉冲相干激光雷达 散斑成像模型 散斑噪声压缩 |
| 收稿时间： | 1999-05-21 |
A Speckle Imaging Model for Impulse Coherent Laser Radar and Suppressing Its Speckle Noise |
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| JIANG Lihui,Wang Chunhui,Wang Qi,SHANG Tieliang. A Speckle Imaging Model for Impulse Coherent Laser Radar and Suppressing Its Speckle Noise[J]. Acta Optica Sinica, 2000, 20(12): 623-1628 |
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| Authors: | JIANG Lihui Wang Chunhui Wang Qi SHANG Tieliang |
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| Abstract: | A speckle imaging model for impulse coherent laser radar(ICLR) is derived, which proves the presence of multiplicative noise in images of ICLR. According to its statistical property, a parallel weighted average multidirectional morphological filtering algorithm is presented. Simulation result shows the algorithm can not only effectively suppress speckle noise in images but also preserve the geometrical features of images. Through comparison, it is proved that the algorithm is superior to F. Safa algorithm. |
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| Keywords: | impulse coherent laser radar speckle noise morphological filter parallel processing weighted avera |
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