搜索资源列表
esprit
- 此算法是基于空间旋转不变技术(ESPRIT)编写的matlab程序,用来提取信号的频率,幅值,衰减时间常数,相位等参数
harmonic
- 利用Blackman窗函数对工频信号进行加窗FFT后校正计算出基波和谐波的幅值、频率和初始相角。-Blackman window function using frequency signal windowed FFT is calculated after the correction of fundamental and harmonic amplitude, frequency and initial phase angle.
white_noise
- 生成白噪声信号:包括采样频率,最大和最小频率,时间长度,幅值等要求的信号。-Generated white noise signal: including sampling frequency, maximum and minimum frequency, duration, amplitude and other requirements of the signal.
pack_emd
- EMD经典程序包,求瞬时频率和瞬时幅值,以及希尔伯特谱等。-Classic EMD program package, and instantaneous frequency and amplitude, as well as Hilbert spectrometer.
esprit
- 跟prony算法一样,ESPRIT(Estimation of Signal Parameters Via Rotational Invariance Techniques)也是一种参数法,它是一种基于旋转不变技术参数估计的信号处理方法,此方法可以高精度地辨识电力系统中任意组合的衰减/非衰减正弦信号的频率,相位及其幅值等信息。它不需要对信号进行同步采样。此方法把信号空间分解为信号子空间和噪声子空间,能够在较短的信号长度内准确的检测出信号中各个谐波和间谐波成分。-ESPRIT
nengliang-zhongxin-jiaozhengfa
- 能量重心校正法,进行频谱的幅值修正,算法可以参见谢明、丁康老师的频谱分析文章。-Energy center of gravity correction method, the amplitude correction of the spectrum, spectrum analysis of the algorithm can be found in Xie Ming, DING Kang teacher article.
pingdingchuang-fuzhi-xiuzheng
- 不同的窗函数,都对应不同的幅值修正系数;针对复制修正中最重要的平顶窗,给出修正的方法。-Different window functions, corresponding to the amplitude correction factor copy the most important amendment of the flat-top windows, give a correction method.
filters-used-to-heart-noise
- 读取心电数据,画出心电数据的波形和频谱图,观察心电数据的频率段范围 2.分别添加以下噪声(至少3种),画出噪声信号的频谱图,验证设计的噪声是否符合要求 (1)基线漂移 基线漂移通常为频率非常非常低的噪声信号,添加了基线漂移后的心电信号可以观察到原始信号整体的上下浮动 (2)高频噪声 高频噪声可以设计为大于100Hz的随机信号 (3)呼吸噪声 人体的呼吸带来的干扰大约在0.1Hz~0.25Hz (4)50HZ工频信号干扰(必做) 50Hz工频信号
time---domain--algorithm
- 使用MySin函数生成一个幅值为3、频率为10Hz的正弦信号x(t),其中dt分别为0.1s、0.08、0.05s、0.005s。绘出四个正弦信号波形及其单边幅值谱-Use MySin amplitude function generates a 3, a frequency of 10Hz sinusoidal signal x (t), where dt respectively 0.1s, 0.08,0.05s, 0.005s. Sinusoidal waveform and draw f
lcl_simulation
- 输入谐波幅值越大,会使输出幅值与输入幅值偏差增大,但不影响相位。频率越大,输出与输入相位偏差越大。 -The larger the input harmonic amplitude, causes the output amplitude input amplitude deviation increases, but does not affect phase. The frequency, the greater the output and input phase deviation.
VBA_Hz_um_s
- 能够对原始时间频率三维谱数据进行频率幅值排序,并对于给定的频率范围进行动态搜索频率范围内最高幅值-Possible to the original three-dimensional time-frequency amplitude frequency spectral data sorting, and for a given frequency range within the frequency range up to the magnitude of dynamic search
converter-of-axis
- 采用幅值恒等原则建立的三相到两相静止坐标系和两相静止坐标系到三相坐标系的变换-Constant amplitude using the principles established by the three-phase to two-phase stationary coordinate system and the two-phase stationary coordinate system to transform the three-phase coordinate system
新建文件夹 (2)
- 本文建立了独立悬架汽车整车七自由度动力学模型,推导了振动微分方程,运用数值仿真的手段研究了汽车悬架阻尼系数、刚度等设计参数对汽车振动特性的影响规律。结果表明,在共振区域附近,相对较大的刚度,会导致汽车的舒适性下降,但在共振区以外的高频区,刚度对汽车振动幅值的影响并不大;后桥悬挂阻尼对汽车振动幅值的影响较前桥强烈,适当增大后桥悬挂的阻尼有利于振动幅值的降低(This paper established an independent suspension vehicle dynamic model
Dirlik
- 雨流幅值分布函数Dirlik模型,可用于进行随机载荷振动疲劳寿命分析(rainflow cycle amplitude probability density function p(S) by Dirlik)
MATLAB
- 求取谐波频率,记算出各次谐波的幅值,有效值(The harmonic frequency is calculated, and the amplitude and effective value of each harmonic are calculated)
ATR通道
- 均幅指标(ATR)是取一定时间周期内的股价波动幅度的移动平均值,主要用于研判买卖时机。 均幅指标是显示市场变化率的指标,由威尔德(Welles Wilder)在《技术交易系统中的新概念》一书中首次提出,目前已成为众多指标经常引用的技术量。威尔德发现较高的ATR值常发生在市场底部,并伴随恐慌性抛盘。当其值较低时,则往往发生在合并以后的市场顶部。(The average amplitude index (ATR) is the moving average of the fluctuation r
常用ENVI功能扩展工具
- airbus_catalog_query-影像数据查询工具 ENVI_Menu_Finder ENVI批处理与代码生成器 EO-1 ALI Calibration EPOC.1242 Frame_Subset_via_Shapefile Google Earth Super-Overlay Tool (GEST) hyperion_tools Landsat8LST-地表温度反演 LIST.TXT MODIS MCD12Q1数据批处理工具 modis_conversion_toolkit NND