| 利用二次采样技术进行扫频测量非线性抑制 |
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| 引用本文： | 景永奇,何国瑜,许鼎.利用二次采样技术进行扫频测量非线性抑制[J].微波学报,2003,19(4):92-95. |
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| 作者姓名： | 景永奇 何国瑜 许鼎 |
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| 作者单位： | 北京航空航天大学电子信息工程学院,北京,100083 |
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| 摘 要： | 基于溅散板型抛物面天线产生的已知参考信号，介绍了一种通过对FM／CW近程雷达回波中频信号进行二次采样抑制VCO扫频非线性的技术。给出了天线设计特点以及这种方法的基本原理和注意事项。此外，在暗室内进行的模拟实验表明，这种方法设计合理，可行有效，大大抑制了扫频非线性引起的一维成像频谱展宽和偏移现象。
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| 关 键 词： | 二次采样 溅散板型抛物面天线 扫频非线性 VCO 近程雷达 |
| 文章编号： | 1005-6122(2003)04-0092-04 |
| 修稿时间： | 2003年3月21日 |
Suppression of Sweeping Nonlinearity Based on Resampling Technique |
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| Jing Yongqi,He Guoyu,Xu Ding.Suppression of Sweeping Nonlinearity Based on Resampling Technique[J].Journal of Microwaves,2003,19(4):92-95. |
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| Authors: | Jing Yongqi He Guoyu Xu Ding |
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| Abstract: | A new technique to suppress the VCO nonlinearity by resampling the measured IF s ignal in short range frequency modulated continuous wave (FM/CW) radar based on a known reflecting reference is presented, which caused intentionally by a spec ially fabricated splash plate paraboloidal antenna. The basic principle and spe cial attentions are given in following discussion. Moreover, a confirmed experim ent in microwave non reflective chamber is simulated. The result shows the feas ibility of our self made antenna and the result is satisfactorily. |
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| Keywords: | Sweeping nonlinearity Splash plate paraboloidal antenna Resampling techniqu e |
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