| 引用本文: | 黄晓涛,梁甸农.基于 RELAX 的 UWB-SAR 抑制 RFI 算法.[J].国防科技大学学报,2000,22(2):55-59.[点击复制] |
| HUANG Xiaotao,LIANG diannong.RFI Suppression in UWB-SAR Based on RELAX[J].Journal of National University of Defense Technology,2000,22(2):55-59[点击复制] |
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| 基于 RELAX 的 UWB-SAR 抑制 RFI 算法 |
| 黄晓涛, 梁甸农 |
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(国防科技大学 电子科学与工程学院, 湖南 长沙 410073)
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| 摘要: |
| 在首先给出超宽带合成孔径雷达 (UWB-SAR) 抑制射频干扰 (RFI) 问题的参数化模型基础上, 从信号参数估计出发, 具体推导了实信号下 RELAX 算法的计算公式。针对 RFI 的复杂性, 提出了一种逐级 RELAX 算法 (GRELAX)。基于仿真和实测数据的实验结果表明: GRELAX算法能够有效地抑制 RFI, 并具有较快的运算速度。 |
| 关键词: 超宽带合成孔径雷达 (UWB-SAR) 射频干扰 (RFI) 参数估计 RELAX算法 |
| DOI： |
| 投稿日期：1999-08-14 |
| 基金项目:国家重点预研项目资助 |
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| RFI Suppression in UWB-SAR Based on RELAX |
| HUANG Xiaotao, LIANG diannong |
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(College of Electronic Science and Engineering, National Univ. of Defense Technology, Changsha 410073, China)
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| Abstract: |
| We first present the parametric model of Radio Frequency Interference (RFI) suppression in Ultra-WideBand Synthetic Aperture Radar (UWB-SAR). Starting from the problem of signal parameter estimation, we deduce in detail the computation formula of RELAX algorithm for real-valued signal. As to the complexity of RFI, a Gradual RELAX (GRELAX) algorithm is proposed. Experiments with synthesized and raw RFI data demonstrate the efficiency of GRELAX in RFI suppression and its high processing speed. |
| Keywords: Ultra-WideBand Synthetic Aperture Radar (UWB-SAR) Radio Frequency Interference (RFI) sinusoidal parameter estimation RELAX |
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