| 小转角下空间目标双基地ISAR二维成像算法 |
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| 引用本文： | 韩宁,尚朝轩,董健.小转角下空间目标双基地ISAR二维成像算法[J].传感器与微系统,2011,30(11):138-141. |
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| 作者姓名： | 韩宁 尚朝轩 董健 |
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| 作者单位： | 军械工程学院雷达工程教研室,河北石家庄,050003 |
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| 基金项目： | 国家“863”计划资助项目(2008AA0194) |
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| 摘 要： | 为了解决小转角下空间目标双基地ISAR方位向分辨率下降的问题,提出基于AR模型数据外推的双基地ISAR成像算法.双基地ISAR成像时,小转角下的方位向回波可认为服从AR模型,据此建立线性预测方程,利用Burg熵最大法中的Levions递推估计预测系数,然后对方位向回波进行外推,最后基于原始数据和外推后的数据共同进行谱估...
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| 关 键 词： | 双基地ISAR 线性预测 方位分辨率 二维成像 |
2D imaging algorithm for bistatic ISAR of space target in small rotating angle |
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| HAN Ning,SHANG Chao-xuan,DONG Jian.2D imaging algorithm for bistatic ISAR of space target in small rotating angle[J].Transducer and Microsystem Technology,2011,30(11):138-141. |
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| Authors: | HAN Ning SHANG Chao-xuan DONG Jian |
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| Affiliation: | HAN Ning,SHANG Chao-xuan,DONG Jian(Faculty office of Radar Engineering,Ordnance Engineering College,Shijiazhuang 050003,China) |
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| Abstract: | In bistatic inverse synthetic aperture radar(ISAR),azimuth resolution decreases when imaging space target in small rotating angle.To solve this problem,algorithm based on auto regressive(AR)model dada extrapolation is presented.Echo in azimuth direction can be deemed to obey AR model in bistatic ISAR.Based on the property,linear prediction equation is established,and the Levions recursive method in maximum Burg entropy algorithm is used to estimate the prediction coefficients.The echo in azimuth direction i... |
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| Keywords: | bistatic ISAR linear prediction azimuth resolution 2D imaging |
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