| 回波到达时间精确估测的多尺度方法 |
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| 引用本文： | 谭营,邓超.回波到达时间精确估测的多尺度方法[J].电子与信息学报,1998,20(3):308-314. |
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| 作者姓名： | 谭营 邓超 |
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| 作者单位： | 中国科学技术大学电子工程与信息科学系，中国科学技术大学电子工程与信息科学系 合肥 230027，合肥 230027 |
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| 基金项目： | 国家自然科学基金，攀登计划资助课题 |
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| 摘 要： | 本文提出了一种雷达回波到达时间精确估测的多尺度方法。通过在不同尺度上对回波特性进行综合分析,该方法不仅能剔除多径干扰,正确检测雷达回波,精确测量其波达时刻,同时还具有很强的抑制噪声的能力。由于该方法只需对接收信号计算三尺度的小波变换和对所检测到的候选波作两尺度小波变换且能采用Mallat算法,故其计算效率很高。实验结果验证了本文方法的有效性。
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| 关 键 词： | 多尺度分析 小波变换 回波波达时刻 尺度比 |
| 收稿时间： | 1996-12-23 |
| 修稿时间： | 1997-8-1 |
MULTISCALE METHOD FOR PRECISE ESTIMATION OF TOA OF RADAR RETURN |
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| Tan Ying,Deng Chao.MULTISCALE METHOD FOR PRECISE ESTIMATION OF TOA OF RADAR RETURN[J].Journal of Electronics & Information Technology,1998,20(3):308-314. |
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| Authors: | Tan Ying Deng Chao |
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| Affiliation: | Department of Electronic Engineering and Information Science University of Science and Technology of China Hefei 230027 |
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| Abstract: | A multiscale analysis method for precisely estimating the time of arrival (TOA)
of radar return is proposed in this paper. Through synthetically analyzing the characteristics of echoes in different scales, the method not only can detect the radar return and measure its TOA precisely but also can cancel the multipath interferences correctly and reject noise strongly. Only a three-scale wavelet transform (WT) is needed for every receiving signal and a two-scale WT is performed on each candidate radar return in this method. Our algorithm is more computationally efficient by using the famous Mallat algorithm. The experimental results in this paper have verified the effectiveness of our method. |
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| Keywords: | Multiscale analysis Wavelet transform TOA of radar return Scale ratio |
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