...： 加权分数傅立叶变换,抗截获,调制方式识别,载波特性 中文摘要： 分数傅立叶变换（Fractional Fourier Transform, FRFT）是傅立叶变换的广义形式,能同时提供信号时域和频域的信息,目前已在信号处理等领域受到了较大的关注,有广...
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Principle of fractional Fourier transform (FRFT) and alternation to that linear modulate frequency (LMF) treatment advantage were introduced.
介绍了分数阶傅里叶变换的原理及其对线性调频信号的处理优势。
The FRFT has signal representation property both in space and frequency domain. The original image and the watermark is transformed with different orders to improve watermarking security.
分数傅里叶变换具有空域和频域双域表达能力，可以对原始图像和水印信号分别进行不同阶次的分数傅里叶变换以增强水印安全性。
In this paper, we first obtain the FRFT of the uniform impulse-train sampled signals, and based on it, we deduce sampling theorem and reconstruction formula for bandpass and lowpass signals with FRFT.
本文首先得到了均匀冲激串采样信号的FRFT，然后在此基础上导出了FRF T域上带通信号和低通信号的采样定理和重构公式。
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