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QPSK_16QAM
提取信号七个基于瞬时信息的特征：零中心归一化瞬时幅度功率谱密度的最大值,零中心归一化瞬时幅度绝对值的标准偏差，零中心非弱信号段瞬时相位非线性分量绝对值标准偏差，零中心非弱信号段瞬时相位非线性分量标准偏差，零中心归一化的非弱信号段瞬时频率绝对值的标准偏差，一个信号段的归一化瞬时频率功率谱密度的最大值，根据信号 QPSK 和16QAM在 XI 轴投影的不同表现，提出特征参数。(Extraction based on instantaneous information signal of seven characteristics: zero center normalized instantaneous amplitude of the maximum power spectral density, zero-center normalized standard deviation of the instantaneous rate of absolute zero center section of non-weak signal instantaneous phase nonlinear component absolute value of standard deviation, non-zero center section of the weak signal non-linear component of the standard deviation of the instantaneous phase, zero-center non-normalized absolute value of the weak signal section of the standard deviation of the instantaneous frequency of a signal segment of the normalized power spectral density of instantaneous frequency maximum, according to the signal QPSK and 16QAM in the XI-axis projection of the different performance of the proposed characteristic parameters.)
- 2020-07-12 19:48:52下载
- 积分：1
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sy4
频率估计，用了最基本的Rife算法，和导数法。同时计算了平均频率和均方差值(Frequency estimation, using the most basic Rife algorithm and derivative method. The mean frequency and mean square difference are also calculated)
- 2017-06-16 16:07:11下载
- 积分：1
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matlab_functiontool
说明： 详细介绍matlab的函数工具及其使用方法(Detailed introduction matlab function tool and its use)
- 2008-10-01 11:41:08下载
- 积分：1
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MATLAB-PPT
MATLAB系统与语言简介
矩阵运算与数组运算
(The MATLAB Language Introduction matrix computing array operations)
- 2012-11-30 22:58:45下载
- 积分：1
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GNSS_INS
GPS_INS松组合程序，采用EKF滤波，包含仿真环境(GPS/INS loose-couple program, with EKF application for navigation filters, the simulation environment is also included.)
- 2020-12-17 22:09:12下载
- 积分：1
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ZANTAI
暂态分析包括单相短路，三相短路，两相短路，两相短路接地(Transient analysis includes single-phase short circuit, three-phase short circuit, two-phase short circuit, two-phase short circuit to ground)
- 2015-03-18 11:04:02下载
- 积分：1
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gcircle
This routine draws a circle with center defined as
X_CENTER,,Y_CENTER, radius as a scaler RADIUS.
- 2012-06-12 02:37:06下载
- 积分：1
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soundchange
对原始语音进行上采样和下采样，分析对比他们的时域图和频谱图。最后对比原始语音、75HZ激励、150HZ激励以及噪声激励下的效果(SOME SIMPLE MANIPULATIONS OF SOUND USING DIGITAL SIGNAL PROCESSING
The original sound and its spectrogram
Downsampling the waveform
downsampling
Upsampling the waveform
Linear filtering the waveform
Original speech
The source-filter model of speech
Speech with 75-Hz excitation
Speech with 150-Hz excitation
Speech with noise excitation)
- 2010-05-06 09:28:17下载
- 积分：1
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nancy_body
This file contains and display nancy s articulated humanoid body in anatomical static posture.
Body segments can be accessed independently they are named with suffix: "_point", polygons are also independent with suffix: "_polygons". In addition, the variables "point" and "polygons" include the whole points and polygons respectively with the accumulative index in the case of polygons. After running the file, do a "whos" to see the actual names of body segments.
- 2013-01-30 20:19:42下载
- 积分：1
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为.dat文件的每帧的帧头加上帧长等信息-add216b
为.dat文件的每帧的帧头加上帧长等信息(for. Dat paper every frame with the header information such as frame size)
- 2005-03-21 17:42:03下载
- 积分：1
