1) frequency checkout
频率校验
2) Frequency Correction Channel FCCH
频率校验信道
3) frequency correction
频率校正
1.
A new frequency correction method was obtained,suitable for the situation of high-order harmonic generation,and this method was proved by two simulation experiments.
采用相位差法对工频频率测量进行了研究,推出了频率校正的计算公式;研究了窗函数和窗长度的选择对校正精度和响应时间的影响,在窗长度足够长的情况下,采用布莱克曼窗、凯泽窗有很高的校正精度;为提高响应速度,推导出了窗长为一个工频周期的傅立叶系数的计算公式,得出只含单频成分时,仍能够采用相位差法对频率进行校正,而当含有高次谐波时不宜直接采用相位差法的结论;还得到一种新的频率校正方法,该方法适合含有高次谐波的情况;通过给出的两种模型进行仿真实验,验证了理论结果的正确性。
4) frequency calibration
频率校准
1.
The real-time frequency calibration method in frequency agility radar target simulator;
频率捷变雷达目标模拟器实时动态频率校准方法
2.
This paper analyzes the defect of the frequency calibration in the traditional signal source of the frequency agility radar,improves the frequency calibration,designs a new frequency calibration circuit.
指出了原有频率捷变雷达信号源中频率校准方法存在的缺陷;改进了原有频率校准电路,经过对实际数据的分析,新的校准电路频率漂移速度达到105Hz/μs,有效地解决了原有信号源的频率跟踪精度低和稳定性差的问题。
3.
This paper analyzes the defect of the frequency calibration in the traditional signal source of the frequency agility radar, designs a new work-while-calibrate circuit for frequency calibration, improving the frequency track precision and the stable work duration.
分析了原有频率捷变雷达信号源中频率校准方法存在的缺陷,在此基础上设计了边工作边校准的频率校准电路,提高了信号源的频率跟踪精度和稳定工作时间。
5) frequency revisal
频率校订
6) calibration frequency
校准频率
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