| 8mm线性调频源线性度的动态测量技术 |
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| 引用本文： | 宋景唯.8mm线性调频源线性度的动态测量技术[J].电子科技大学学报(社会科学版),1992(5). |
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| 作者姓名： | 宋景唯 |
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| 作者单位： | 电子科技大学电子工程系 成都610054 |
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| 摘 要： | 线性度对线性调频雷达的距离分辨力有极大的影响。因此介绍了一种在线性调频源工作时动态测量其非线性度的方法,证明了当调角信号的调制指数很小时可以用一个调幅信号作近似。基于这个原理,利用频谱分析的方法可以重构出频率偏离函数的原始形状,从而确定了该调频源的非线性度。仿真实验考察了各种参数对测量精度的影响,并证明了测量相对误差低于2％。
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| 关 键 词： | 线性度 线性调频源 动态测量 |
DYNAMICAL MEASUREMENT OF THE LINEARITY OF 8mm LINEAR FREQUENCY-MODULATED SOURCE |
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| Song Jingwei.DYNAMICAL MEASUREMENT OF THE LINEARITY OF 8mm LINEAR FREQUENCY-MODULATED SOURCE[J].Journal of University of Electronic Science and Technology of China(Social Sciences Edition),1992(5). |
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| Authors: | Song Jingwei |
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| Abstract: | The range resolution of a linear FM radar depends on the linearity. A technique for dynamically measuring the linearity of a 8 mm linear FM source is presented in this paper. Based on the principle that an angle-modulated signal can be approximated by an amplitude-modulated signal if the modulation eoefficient is sufficient small, the original waveform of the frequency deviation function can be reconstructed by means of spectrum analysis. Therefore, the linearity is determined. The simulation experiment studies the effects of several parameters on the accuracy of measurement and shows that the errors of the measurement are lower that 2%. |
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| Keywords: | linearity linear frequency-modulated source dynamically measuring |
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