1) Frequency up-shifting
频率上移
1.
Frequency up-shifting induced by relativistic ionization front;
相对论电离波前导致的频率上移
2) Frequency deviation
频率偏移
1.
According to the fundamental principle of correlation function,the effe ct of measuring accuracy resulting from frequency deviation is analyzed in this paper.
从相关函数的基本原理出发,分析了频率偏移对信号测量准确度的影响。
2.
On the basis of high precision requirement for input signals in the power system protection and control system,this paper,only for the influence of power system frequency deviation on extracting fundamental harmonic,studies the amplitude error of Fourier algorithm,presents a method of correcting frequency deviation,and further derives the formulas of improved Fourier algorithm.
针对电力系统微机保护和控制系统对输入信号精度的要求 ,研究了电力系统频率偏移对傅立叶算法的影响 ,提出一种消弱频率偏移影响的方法 ,并推导出校正频率偏移的改进傅立叶算法 。
3.
As for digital self excited control system for use with synchronous generator, this paper analyses the influence of power system frequency deviation on automatic excitation regulator, derives the rule of voltage error varying while system frequency deviates from normal rating and presents a kind of correcting method.
本文针对数字式同步发电机自并励静止整流器励磁控制系统 ,研究了电力系统频率偏移对励磁控制的影响 ,导出了调节励磁电压的误差随频率偏移的变化规律 ,并提出了对励磁调节误差进行校正的方法。
3) frequency offset
频率偏移
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.
The effect of frequency offset on YBX-1 high-frequency transceiver;
频率偏移对YBX-1型高频收发信机的影响
3.
To solve the problem of frequency offset out of intermediate frequency(IF) bandwidth for microwave and millimeter wave amplitude and phase receivers, an optimal architecture of low-IF quadrature receiver combining with double-sideband suppressed-carrier(DSBSC) was presented.
为解决微波毫米波幅相接收机的频率偏移超过中频带宽的问题,提出了一种低中频正交接收机结合双边带抑载的优化结构。
5) Frequency shift
频率漂移
1.
This paper focuses on analysis of the causation,the mechanism and the hazard of a frequency shift.
对卫星在振动试验中经常发生频率漂移现象产生的原因、机理和危害进行了分析,认为卫星结构的非线性或损伤扩展是频率漂移现象产生的主要原因,并针对卫星结构中常用的蜂窝夹层板进行了非线性动力学参数试验,验证了本文可恢复频漂现象机理分析的正确性。
2.
Oven controlled crystal oscillators are used widely in PD radars for high stability,but there are frequency shift during the warm-up time which is about 5 to 10 minutes.
文中根据已知的OCXO在温升过程中频率慢漂变化的数据拟合出频率漂移函数,分析了该时间段内频率漂移对PD雷达中相参积累的损失和对测速精度的影响。
3.
A simple expression is obtained for pressure induced frequency shifts in the resonator,which is examined for design optimization.
以电弹性体中叠加于偏场之上的小增量场理论为基础,研究了固定在圆柱壳中的圆盘状晶体谐振器的厚度剪切振动问题,得到了环境压力所诱导的谐振器频率漂移的表达式,该表达式可用于指导压力传感器的优化设计。
6) frequency shift
频率偏移
1.
The principle and the design of quadrature-beamformer are discussed and the effect of the frequency shift on the beam axis is theoretically analyzed.
介绍了正交波束形成器的原理和设计方法,针对频率偏移对波束主轴方向的影响进行了理论分析和讨论,仿真结果验证了理论分析的正确性。
2.
The frequency shift is obtained and compared with the effect of air damping.
推导了吸附效应影响下的频率偏移,并与空气阻尼对谐振频率的影响进行了比较。
补充资料：频率计量(见时间频率计量)
频率计量(见时间频率计量)
frequency metrology: see time and frequency metrology
口n IQ liliang顷率频率计皿(f比quency metrolo盯) 计t。见时闰
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