| 机载P波段UWB SAR高效成像方法研究 |
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| 引用本文： | 董臻,梁甸农.机载P波段UWB SAR高效成像方法研究[J].系统工程与电子技术,2008,30(12). |
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| 作者姓名： | 董臻 梁甸农 |
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| 作者单位： | 国防科学技术大学电子科学与工程学院,湖南,长沙,410073 |
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| 摘 要： | 针对机载P波段超宽带合成孔径雷达高效成像问题,改进了距离-多普勒算法。不仅能补偿高阶相位,而且通过chirp-z变换完成距离迁移校正,避免了经典RD算法的插值运算,所以是一种高效的高分辨成像算法。分析了如何划分子测绘带以便分别处理,以抑制高阶相位误差的影响。实际机载数据的处理结果证明了算法的有效性。
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| 关 键 词： | 超宽带合成孔径雷达 高阶相位补偿 距离迁移校正 chirp-z变换 予测绘带 |
High-efficiency and high-resolution imaging algorithm for airborne P band UWB SAR |
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| DONG Zhen,LIANG Dian-nong.High-efficiency and high-resolution imaging algorithm for airborne P band UWB SAR[J].System Engineering and Electronics,2008,30(12). |
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| Authors: | DONG Zhen LIANG Dian-nong |
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| Abstract: | To study the problem of high-efficiency and high-resolution imaging algorithm for airborne P band UWB SAR,a modified range-Doppler algorithm is proposed.It can not only compensate the high order phase error,but also correct the range cell migration with a chirp-z transform.It is a high-resolution imaging algorithm with high-efficiency because it does not need interpolation.The principle of determining the width of sub-swath is discussed to suppress the high order phase error.The effectiveness of the method is also verified with the real data from an airborne P band UWB SAR. |
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| Keywords: | ultra wide band synthetic aperture radar(UWB SAR) compensation of high order phase error range cell migration correction(RCMC) chirp-z transform(CZT) sub-swath |
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