1) precession
[英][pri'seʃən] [美][prɪ'sɛʃən]
步差
2) synchronization error
同步误差
1.
Effects of OFDMA system performance caused by frequency offset and synchronization error;
频率偏移和同步误差对OFDMA系统性能的影响
2.
Performance of the orthogonal code CDMA system with synchronization errors;
含同步误差的正交码CDMA系统性能分析
3.
The time and frequency synchronization error models are given according to the theory of spaceborne parasitic interferometric synthetic aperture radar(InSAR) and the work characteristic of ultra stable oscillator(USO).
结合星载寄生式干涉合成孔径雷达(InSAR)的工作原理及高稳定频率源的工作特性,给出了时间和频率同步误差模型。
4) synchronous error
同步误差
1.
Spectral leakage caused by synchronous error in no-synchronous sampling is an important reason, which reduces the accuracy of spectral analysis and harmonic measurement.
采样不同步产生的同步误差是造成频谱泄漏和影响谐波分析准确性、检测精度的重要原因。
2.
By adjusting sampling time interval the frequency calculation,the algorithm can achieve sampling frequency self-adaptive,reduce synchronous error and the influence of spectral leakage,thereby can improve the accuracy of spectral analysis and harmonic measurement for power system signal which frequency change is slow.
由于减少了同步误差,从而降低频谱泄漏的影响。
3.
The causes of synchronous error were analyzed,and calculation models for the error of signal frequency-domain analysis induced by synchronous error were worked out.
分析了同步误差产生的原因,导出同步误差引起信号频域分析误差的计算模型,并以标准正弦波信号、含有谐波干扰的信号(电力系统中的实际电流、电压信号)为例,在频域中对软件实现同步采样的误差进行仿真计算与分析。
5) difference step
差分步长
6) step by step error
分步误差
1.
The step by step error and its estimating method are introduced first, and then the values of the step by step error corresponding to different calculating examples by using some typical splitting forms are calculated.
首先介绍分步误差概念和推求方法，然后，对流场计算中若干典型的破开格式，在不同算例下，计算出对应的分步误差值，再与数值验证相对照，结果吻合。
补充资料：跨步电位差
跨步电位差
step potential difference
kU0bUd旧nwe一Cho跨步电位差(st印potential differenee)电流自接地电极经周围土壤流散时，会在土壤中产生压降并形成一定的地表电位分布，将地面上水平距为。.sm的两点间的电位差称为跨步电位差。 跨步电位差的最大值出现在电极附近的地面上和地网突出边角外侧的地面上。最大跨步电位差E.m和相应的电极(或地网)电位IR(I为经电极或地网流散的电流，R为电极或地网的接地电阻)的比值称为跨步电位差系数K.，即二，一箫 闭合均压地网的外缘各角应做成圆弧形，以使地网外侧地面的电位比较均匀，达到降低跨步电位差的目的，圆弧的半径可取均压带间距的一半。 均压带为等间距布置时，跨步电位差系数可按下图确定。
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