1) frequency sampling
频率采样
1.
In this paper, the principle of high speed and high precision frequency sampling is presented.
讨论了高速、高精度频率采样的基本原理;分析了量化噪声对测量误差的影响;提出了采样器建立和保持时间对测量误差影响的问题;导出了考虑采样器建立和保持时间后时间量化误差的概率密度函数,为量化误差的校正奠定了理论基础。
2.
In the frequency sampling method the value of transition band samples, which are usually obtained by consulting a table, must be determined in order to make the attenuation within the stopband maximal.
频率采样技术是 FIR数字滤波器设计的常用方法之一。
3.
This paper deduces the function of stopband attenuation on the order of filter and the sampled value of transition band,according to the features of designing FIR filters with frequency sampling technique,and optimizes it with immune algorithm.
针对频率采样技术设计FIR滤波器的特点,推导出阻带衰减关于滤波器阶数和过渡带采样值的优化函数,并具体设计了免疫算法对其优化求解。
2) sampling frequency
采样频率
1.
Method for determination of sampling frequency of routine monitoring of water quality;
水质常规监测采样频率确定方法研究
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.
The effect of the sampling frequency on the time averaging characteristics of integrating sound level meter;
采样频率对积分声级计时间平均特性影响的研究
3) sample frequency
采样频率
1.
Influences of sample frequency and delays on tracking system;
采样频率、系统延迟对跟踪系统稳定性能的影响
2.
The protect function can be achieved in the improvement of sample frequency.
在雷达伺服系统中采用全数字化技术时 ,控制计算的主要时间使用瓶颈就出现在采样延时上 ,提高了采样频率就提高了控制计算的速度 ,从而有利于各种保护功能的实现。
3.
However,the synchronous change of sample frequency and switching frequency makes the filter design complex,meanwhile the digital realization of engineering becomes difficult as the gain of controller and modulator vary with the sample frequency.
随机开关频率脉宽调制方法在较宽频率范围可以获得均匀的频谱特性,但是由于数字化实现中采样周期同步随机变化,使得滤波器设计复杂,而且控制器的增益和调节器的设计需要随着采样频率的变化而变化,使得工程化实现困难。
4) sampling rate
采样频率
1.
The paper introduces an adaptive predictive algorithm of sampling rate for electric power system.
针对电力系统中频率变化导致的数据采集和测量误差,文章提出一种对电力系统进行交流采样的一种自适应频率预测算法,为采用DSP技术准确估计交流信号的采样频率提供了可行的计算方法。
2.
After analyzing the spectrum of the FSK signal,FFT detection technic based on undersampling was put forward,and a new method to calculate original spectrum,upper frequency and lower frequency was presented,the selection of sampling rate and the transformation of spectrum after sampled were analyzed,and the frequency resolution and detecting accuracy were studied.
对铁路轨道移频信号的频谱进行了分析,根据其频谱特点,提出了基于欠采样的FFT检测方法,并给出了计算原始频谱和上下边频的新方法,分析了采样频率的选取以及欠采样前后信号频谱之间的关系,同时对频率分辨率和精度进行了研究。
3.
The influences of shape,width and amplitude of structure elements on the performance of morphological filters,and the influences of vibration signal sampling rate on the size of structure elements were analyzed.
定量分析了形态滤波器设计中结构元素的形状、宽度、幅值等因素对形态滤波器性能的影响程度以及振动信号的采样频率对结构元素尺寸的影响,并根据数据分析结果得出了在对旋转机械振动信号进行降噪滤波处理时,形态滤波器中结构元素的形状及尺寸的一般设计规律。
5) sample rate
采样频率
1.
To multiply the sample rate of AD converter under MCS51 control;
提高单片机控制的AD转换器采样频率
2.
Aimed at the problem of low sample rate leading to low measurement distinguish rate of transient speed, interpolation method was present.
针对采样频率不够高导致瞬时转速测试分辨率过低的问题,提出采用插值的方法,对用较低采样频率采集到的原始信号进行插值处理,以提高采样频率或求得精确过零点,从而显著提高了发动机瞬时转速测试精度。
6) super frequency of sampling
过采样频率
补充资料：采样频率
(Samplingfrequency)在单位时间内(如一日、一月、一年)应该取样的次数。测量水量和水质的数据都具有随机性，为获得随机变量的统计特征值，必须进行频繁的观测，以保证样本特征值能代表总体。它是按一定的设计要求进行推算，以确定应测量的次数，将求得的所需取样的次数大致均匀地分配在所要求的整个监测期间，就可确定出采样频率。
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