| 基于雷达回波的UWB SAR方向图校准 |
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| 引用本文： | 邹鲲,康晓勇,梁甸农.基于雷达回波的UWB SAR方向图校准[J].系统工程与电子技术,2005,27(8):1329-1331. |
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| 作者姓名： | 邹鲲 康晓勇 梁甸农 |
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| 作者单位： | 1. 国防科技大学电子科学与工程学院,湖南,长沙,410073
2. 湖北职业技术学院机电工程系,湖北,黄冈,438000 |
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| 基金项目： | “十五”国家部委基金资助课题(41307020203) |
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| 摘 要： | 低频UWB SAR系统具有较大的方位向积累角,天线方向图非均匀性对系统性能的影响不能忽略。利用接收信号空间和场景空间的对应关系,结合成像模型定性地讨论了天线方向图对系统性能的影响。考虑了距离校正因子、杂波、噪声和目标散射特性等因素后,给出基于脉压回波的天线方向图估计和校正的方法,并用计算机仿真验证了该方法的有效性。
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| 关 键 词： | 低频超宽带合成孔径雷达 天线方向图 校准 |
| 文章编号： | 1001-506X(2005)08-1329-03 |
| 修稿时间： | 2004年5月9日 |
Calibration of the antenna pattern of UWB SAR based on radar echo |
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| ZOU Kun,KANG Xiao-yong,LIANG Dian-nong.Calibration of the antenna pattern of UWB SAR based on radar echo[J].System Engineering and Electronics,2005,27(8):1329-1331. |
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| Authors: | ZOU Kun KANG Xiao-yong LIANG Dian-nong |
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| Institution: | ZOU Kun~1,KANG Xiao-yong~2,LIANG Dian-nong~1 |
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| Abstract: | The wide accumulating azimuth angle is one of the main characteristics of low frequency UWB SAR, so the effect of the antenna pattern on the system performance cannot be neglected. The relationship between the receiving signals and the scene backscattering coefficients is given, and the effect of the antenna pattern is discussed qualitatively with an appropriate imaging algorithm. Taking the range calibration factor, clutter, noise and target scattering characteristic into the consideration, the method of antenna pattern estimation and correction based on radar echo is proposed. The computer simulation is performed to prove the validity of this calibration method. |
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| Keywords: | low frequency ultra wide band synthetic aperture radar antenna pattern calibration |
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