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自相关函数Rxx（tao）可以了解不同时刻同一随机样本间的波形相似程度。
自功率谱密度函数Sxx（f）：反映相关函数在时域内表达随机信号自身与其他信号在不同时刻的内在联系。当随机信号均值为零时，自相关函数和自功率谱密度函数互为傅立叶变换对。
-Autocorrelation function Rxx (tao) can learn the same random sample at different times the degree of similarity between th
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计算目标和海洋回波的功率谱密度,随机调制信号下的模拟ppm，matlab实现了五类灰色关联度模型的计算。- Calculating a target and ocean echo power spectral density, Random ppm modulated analog signal under matlab implements five gray correlation degree computing model.
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计算目标和海洋回波的功率谱密度,关于非线性离散系统辨识，包括广义互相关函数GCC时延估计。- Calculating a target and ocean echo power spectral density, Nonlinear discrete system identification, Including the generalized cross-correlation function GCC time delay estimation.
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包含收发两个客户端程序，详细画出了时域和频域的相关图，计算目标和海洋回波的功率谱密度。- Transceiver contains two client programs, Correlation diagram shown in detail the time domain and frequency domain, Calculating a target and ocean echo power spectral density.
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含噪脉冲信号进行相关检测,计算目标和海洋回波的功率谱密度,基于分段非线性权重值的Pso算法。- Noisy pulse correlation detection signal, Calculating a target and ocean echo power spectral density, Based on piecewise nonlinear weight value Pso algorithm.
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阵列信号处理的高分辨率估计，计算目标和海洋回波的功率谱密度,含噪脉冲信号进行相关检测。- High-resolution array signal processing estimates, Calculating a target and ocean echo power spectral density, Noisy pulse correlation detection signal.
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计算目标和海洋回波的功率谱密度,matlab实现了五类灰色关联度模型的计算,实现了图像的灰度化并进一步用于视频监视控。- Calculating a target and ocean echo power spectral density, matlab implements five gray correlation degree computing model, Achieve a grayscale image and further control for video surveilla
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Matlab产生正弦波、均匀白噪声、高斯白噪声，并将两种噪声叠加到正弦波上。并给出自相关和功率谱密度波形(Matlab produces sine wave, uniform white noise, Gauss white noise, and superimposes two kinds of noise on the sine wave. And give self correlation and power spectral density waveforms)
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