1) orthogonal spectrum
正交频谱
2) cross-spectral density
正交频谱密度
3) spectrum correction
频谱校正
1.
Application of spectrum correction theory in phase measurement for rotate machinery;
频谱校正理论及其在旋转机械相位测量中的应用
2.
Study on the Application of Spectrum Correction in the Run-up and Shutdown Analysis for Rotary Machinery;
频谱校正在旋转机械启停分析中的应用研究
3.
Study of Harmonic Spectrum Correction Precision in Electric Power Network;
电网谐波频谱校正精度研究
4) Correcting spectrum
频谱校正
1.
To estimate sinusoidal signal’s frequency,amplitude and original phase precisely under noisy circum-stances,a novel time-shift phase difference correcting spectrum method based on all-phase FFT spectral analysis was proposed.
为精确估计噪声背景下正弦信号频率、幅值、初始相位,提出了基于全相位FFT谱分析的时移相位差频谱校正法。
2.
And apFFT properties of the phase measurement without correcting spectrum and the restraining spectral leakage are analyzed.
为深入研究全相位FFT(all-phase FFT,apFFT)的相位谱性质以扩大其应用范围,本文从极坐标相位谱图、矢量分析、矩阵分析及其仿真实验等多个角度阐述了apFFT的相位测量机理,较透彻地剖析了apFFT的无需频谱校正的相位测量性质和抑制谱泄漏性能;实验表明,apFFT的测相方差至少比同阶数的FFT测相方差低2/3以上,因而"全相位计"可望在设备故障诊断、电力系统谐波分析、GPS导航定位等领域有着广阔应用。
5) spectral amend
频谱纠正
6) spectral modification
频谱修正
补充资料：非密度制约因素(见密度制约因素)
非密度制约因素(见密度制约因素)
l焦非密度制约因素见生态因素、密度制约后
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