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用汉宁窗函数 的频谱分析源代码
- 减少频谱泄漏，通常在采样后对信号加窗。在电机故障诊断领域，需同时考虑频率分辨率和频谱泄漏。应用最广泛的窗函数是汉宁窗。(To reduce the spectrum leakage, a window is usually added to the signal after sampling. In the field of motor fault diagnosis, frequency resolution and spectrum
qsm_swi_2d.m
- 用于进行swi处理，二维hanning窗滤波，最小密度投影(swi processing, 2d-hanning window filter, minimum intensity projection)
flostft
- 构造一个跳频信号使之产生稳定的时频波形，并用汉宁窗去 进行时频分析(To construct a frequency hopping signal that is generated when the frequency waveform is stable, and with a Hanning window to time-frequency analysis)
framing
- 1)A function which is used to break the input signal into fr a mes and multiply them by a window('hamming','hanning','blackman','bartlett','gausswin').It returns the signal fr a mes. 2)A function that reconstructs the p
slidecfunctionality
- FFT算法进行ＦＦＴ ,ＩＦＦＴ,功率谱计算,包括Hamming 窗,Hanning 窗,triangle 窗,Black()
hann
- 能够实现信号加汉宁窗，可以很好地克服频谱泄露(The signal Gahanning window is able to overcome spectrum leakage.)
示波器波形分析
- 首先读取csv文件（来自示波器或其他来源），csv是字符格式的文本文件。然后，对采样波形进行谐波分析，将输入信号分解成：A0直流分量，A1基频分量，A22次谐波，A33次谐波……N噪声。采用的是加hanning窗的FFT算法。最后，求取 总谐波失真率THD（%）(First read the CSV file, and CSV is a character format text file. Then, the input signal
STFT
- 雷达原始信号，通过设计的汉宁窗滤波器+STFT得到瞬时频率以及滤波后的呼吸心跳的波形图显示(The original radar signal is obtained by Hanning window filter + STFT to obtain the instantaneous frequency and the waveform of the filtered breath and heartbeat)
fir filter using windown
- fir filter can be made using variety of windows such as hamming windows, hanning windows etc.