1) amplitude-frequency leakage law
幅频泄漏规律
2) spectral leakage
频谱泄漏
1.
The algorithm by weighted for three points of Fourier transformed series alleviated spectral leakage, accuracy of dielectric loss angle calculation in asynchronous sampling was improved, realization of algorithm was easy, and in the meantime, the calculation quantity was only a little more than FFT algorithm.
该算法通过对信号傅立叶变换后所得序列中3个点的加权运算减轻了频谱泄漏,提高了信号频率偏离理想频率时计算所得δ的精确度,且算法简单、计算量少,与FFT非常接近。
2.
The main factor of spectral leakage is conducted when the sampling would be non-synchronous.
首先分析了非同步采样时FFT算法频谱泄漏的主要原因。
3.
The kind of windows has advantages of simple structure, lower attenuation and good inhibition of spectral leakage.
该类窗构造简单,具有旁瓣衰减速率快,更好地抑制频谱泄漏影响等特点。
3) spectrum leakage
频谱泄漏
1.
An improved algorithm for reducing spectrum leakage based on equal angle-interval sampling principle;
一种改进的减少频谱泄漏的等角度间隔采样递推算法
2.
Simulation of software sampling frequency adaptive algorithm for reducing spectrum leakage;
一种减小频谱泄漏的采样频率自适应算法仿真研究
3.
Reduce spectrum leakage based on frequency pursuit;
利用频率跟踪技术减小频谱泄漏
4) frequency spectrum leakage
频谱泄漏
1.
By means of the discrete frequency spectrum, the frequency spectrum leakages of the conventional DFT and the DFT with a Hanning window are comparatively analyzed in this paper.
利用离散频谱详细对比分析了DFT的频谱泄漏和加汉宁窗DFT的频谱泄漏现象,讨论了用异步顺序采样值计算电量产生误差的原因,提出了利用异步顺序采样值精确计算电量的方法,实现了畸变电量的精确测量。
2.
Three factors affecting the performance of the proposed algorithm are analyzed,including signal-noise ratio (SNR),frequency spectrum leakage and group-delay.
采用宽带线性扫频信号作为通道幅相误差校正的测试信号,在采集实际接收机数据的基础上,分析了信噪比、频谱泄漏以及由通道校正滤波器引起的群时延对校正精度的影响。
3.
The restrain method of DFT frequency spectrum leakage base on signal symmetry extension is proposed in this paper, experimental results show that this method is effective.
提出一种利用信号对称拓展技术抑制离散傅立叶变换频谱泄漏的方法 ,实验证明是一种有效的方法。
5) frequency leakage
频谱泄漏
1.
There are difficulties in performing synchronized sampling and integral period truncation in the harmonic analysis of power system with the Fourier transform technique, and the measuring results will be disturbed by the frequency leakage.
傅里叶变换进行电力系统谐波分析时很难做到同步采样和整周期截断,由此造成的频谱泄漏将影响谐波分析的效果;通过加窗和插值可以改善谐波分析的准确度。
2.
The simulation results show that the proposed algorithms can reduce the frequency leakage,decrease the measurement error and improve the harmonic measurement precision.
在Matlab/Simulink环境下的仿真结果表明:该算法降低了频谱泄漏,减小了测量误差,提高了谐波的测量精度。
6) RF leakage
射频泄漏
1.
The attenuation measurement error due to RF leakage in a single channel and a dual channel microwave attenuation measurement system is investigated.
研究了单通道和双通道微波衰减测量系统中的射频泄漏所导致的测量误差。
补充资料：幅频特性
分子式：
CAS号：
性质： 在复平面上以频率特性G(jω)幅值为纵坐标，频率为横坐标的图称为幅频特性。又称尼柯尔斯图。
CAS号：
性质： 在复平面上以频率特性G(jω)幅值为纵坐标，频率为横坐标的图称为幅频特性。又称尼柯尔斯图。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条