| 欠采样对LFM脉冲压缩的影响 |
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| 引用本文： | 李嵬,陈祝明,江朝抒.欠采样对LFM脉冲压缩的影响[J].电子科技大学学报（自然科学版）,2005,34(5):600-602,675. |
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| 作者姓名： | 李嵬 陈祝明 江朝抒 |
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| 作者单位： | 1.电子科技大学电子工程学院 成都 610054 |
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| 摘 要： | 研究了对LFM信号进行正交I/Q采样时,采样率对脉冲压缩处理的影响。理论分析证明:在欠采样情况下,脉冲压缩后会出现成对回波,因而系统的多目标分辨能力受到影响;由于信号带宽的损失,脉压输出回波信号的主瓣展宽,距离分辨力下降;另外,主瓣幅度或相位还会受到调制。最后给出了仿真的结果。
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| 关 键 词： | 欠采样 成对回波 线性调频 脉冲压缩 |
| 收稿时间： | 2004-07-15 |
| 修稿时间： | 2004-07-15 |
Effects of Under-Sampling on LFM Pulse Compression |
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| Li Wei;Chen ZhouMing;Jiang ChaoShu.Effects of Under-Sampling on LFM Pulse Compression[J].Journal of University of Electronic Science and Technology of China,2005,34(5):600-602,675. |
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| Authors: | Li Wei;Chen ZhouMing;Jiang ChaoShu |
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| Affiliation: | 1.School of Electronic Engineering,UEST of China Chengdu 610054 |
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| Abstract: | This paper discusses the effects of sampling rate on LFM pulse compression when LFM I/Q Quadrature signals are sampled. The theoretical analysis has proved that in the condition of under-sampling, because the paired echoes will be appeared, the system's multi-object resolution will be affected. In the other hand, after pulse compression processing, the output signal's main lobe will be extended and its amplitude or phase will be modulated, and the range resolution will descend too. Finally, some simulation results have been displayed. |
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| Keywords: | under-sampling paired echoes LFM pulse compression |
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