| 一种合成孔径雷达正交解调误差校正方法 |
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| 引用本文： | 王良军,张长耀.一种合成孔径雷达正交解调误差校正方法[J].合肥工业大学学报(自然科学版),2004,27(8):919-922. |
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| 作者姓名： | 王良军 张长耀 |
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| 作者单位： | 1. 合肥工业大学,计算机与信息学院,安徽,合肥,230009
2. 华东电子工程研究所,安徽,合肥,230031 |
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| 摘 要： | 在合成孔径雷达接收系统中,I/Q正交解调通道幅相误差严重影响成像质量。文章针对I/Q正交解调幅相误差对宽带线性调频信号脉冲压缩的影响进行分析,接着在研究国内外对窄带信号正交解调幅相误差校正方法的基础上,针对宽带信号提出了一种宽带正交解调幅相误差的数字补偿方法,并在实际采集数据中得到了较理想的脉冲压缩输出响应。
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| 关 键 词： | 合成孔径雷达 正交解调 脉冲压缩 幅相误差 |
| 文章编号： | 1003-5060(2004)08-0919-04 |
| 修稿时间： | 2003年9月18日 |
A method for compensation of quadrature demodulation of synthetic aperture radar |
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| WANG Liang-jun,ZHANG Chang-yao.A method for compensation of quadrature demodulation of synthetic aperture radar[J].Journal of Hefei University of Technology(Natural Science),2004,27(8):919-922. |
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| Authors: | WANG Liang-jun ZHANG Chang-yao |
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| Institution: | WANG Liang-jun~1,ZHANG Chang-yao~2 |
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| Abstract: | In the receiving system of the synthetic aperture radar (SAR), the amplitude and phase mismatches between the in-phase and quadrature channels might affect the quality of the SAR images. The influence of such mismatches on pulse compression is studied in this paper. On the basis of the methods for the narrow-band signal, a method for compensating the amplitude-phase errors of the wide-band signal is put forward, and the ideal pulse compression output response is obtained in the practical application. |
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| Keywords: | synthetic aperture radar quadrature demodulation pulse compression amplitude-phase errors |
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