栅栏效应 meaning in Chinese
picket fence effect
Examples
- So power systems harmonic analysis is a significant aspect of power systems research . power system harmonic analysis was realized usually with fast fourier transform ( fft ) , but the method exits spectrum leakage , and can not analyse all harmonic parameters exactly , such as frequency , amplitude and phase , in particular has big phase error
电力系统谐波分析通常都是通过快速傅立叶变换( fft )实现的，但是这种方法存在栅栏效应和频谱泄漏，使计算出的谐波参数即频率、幅值和相位不准，尤其是相位误差很大，无法满足准确的谐波测量要求。 - Because massive harmonic interference in the electrical network , it causes signal - sampling to include the very big harmonic in the measurement system , for eliminating measurement result influence by harmonic , the paper has an in - depth study of fourier transformation harmonics analysis measurement principle , analysis the forming reasons of frequency spectrum leakage and railing effect during measurement , achieves phase locked loop and frequency multiplier technique to realize integer - period synchronous sampling and eliminate impact of frequency spectrum leakage and railing effect in the result of measurement , and investigates in depth theory on phase locked loop and frequency multiplier technique , gives the method of realizing phase locked loop and frequency multiplier technique
由于电网中存在大量的谐波干扰,导致测量系统中取样信号也含有很大的谐波,为了消除谐波对测量结果的影响,论文深入研究了傅立叶变换谐波分析法的测量原理,分析了测量中频谱泄漏和栅栏效应形成的原因,提出了采用锁相环倍频技术实现信号的整周期同步采样,消除频谱泄漏和栅栏效应对测量结果的影响,并对锁相环倍频技术的理论进行了深入研究,给出锁相环倍频技术的实现方法。 - This article takes hanging off and wide fluctuation of transmition velocity of adsl as example , then analysis centers on the discerte multiple tone and the principle of channel load assignation . from analysis above article points out the root of adsl being sensible of noise signal . at last , reserches effects that window function and barrier effect on frequency and adopts fft to work out the noise power of adsl
本文以电信现在推出的adsl传输中链路经常掉线和传输速率经常大范围波动为例，重点分析了adsl所使用的dmt调制方式和注水算法分配信道载荷方式原理，由此指出adsl对噪声信号敏感的根源，在得到问题的根源之后，分析了窗函数和栅栏效应对频谱的影响，采用fft方法计算adsl线路的噪声功率谱，为adsl线路测试提供了可靠的理论依据。