...非平稳信号时频分析方法进行了性能对比分析,并利用分数阶Fourier变换对含噪非平稳线性频率调制信号(Linear Frequency Modulation ,LFM)进行分数阶Fourier域滤波的数值模拟实验,实验结果表明,分数阶Fourier变换具有良好的滤波性...
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...信号时频分析方法进行了性能对比分析,并利用分数阶Fourier变换对含噪非平稳线性频率调制信号(Linear Frequency Modulation ,LFM)进行分数阶Fourier域滤波的数值模拟实验,实验结果表明,分数阶Fourier变换具有良好的滤波性...
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幅度调制是用调制信号去控制载波的振幅，使其随调制信号线性变化，而保持载波的频率不变。
Amplitude modulation is to control the amplitude of signal carrier and make it change linearly with modulation signals and maintain its frequency.
同时清楚地展示了非线性调频信号的频率调制规律。
The algorithm clearly displays the frequency modulation law of the nonlinear frequency modulation chirp signals at the same time.
线性调频信号是通过线性频率调制获得大的时宽带宽积的一种脉冲压缩信号，具有大的带宽，因此有高的距离分辨力。
Chirp signal is a kind of pulse-compressed signal with large time-bandwidth products achieved through linear frequency modulation. It has high resolution in range because of its great bandwidth.
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