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- frequency shift keyer 频移键控器
- The earth's rotation and its motion around the sun add an appreciable frequency shift. 地球自转与地球绕日公转产生附加的频移。
- According to the laser gain change is linear related to the frequency shift, the Doppler frequency is extracted by the signal processing. 根据激光的增益变化和频率变化成线性关系，可以对信号进行处理求出多普勒频移。
- The Brillouin frequency shift can be precisely measured by changing the local frequency and adopting narrow filter. 通过改变本地电信号的频率对信号进行扫描和窄带滤波，从而实现了布里渊频移的精确测量。
- The scheme of measuring Brillouin frequency shift in fiber sensor based on edge optical filter is proposed. 提出了采用边缘光滤波器来测量光纤传感中布里渊频域的方案。
- The results show,the light frequency shift can be effectively r educed in the sharp angle laser light pumping scheme. 结果表明斜光抽运方案可以有效降低铯原子束频标中的光频移。
- This paper describes the design and the test results of Gaussian frequency shift keying for bluetooth. 介绍了一种用于蓝牙芯片的高斯滤波移频键控的设计和测试结果。
- Pilot beacon devices are available in the frequency shift and demodulation modes. 飞行员烟火装置在频度变化和解调模态中是可得的。
- Objective To discuss the effect of temperature on the frequency shift of piezoelectric quartz crystal biosensor. 目的探讨温度因素对压电石英晶体传感器检测频率变化的影响。
- The Continuous Phase Frequency Shift Keying(CPFSK) signaling scheme has been widely used in mobile applications. 连续相位频移键控(CPFSK)信号广泛应用于便携式移动通信系统。
- Signal demodulation of automatic block with audio frequency shift modulated track circuits was implemented with phase-locked loop( PLL) technique and a singe chip microcomputer. 利用锁相环(LL)窄带跟踪特性;与单片机结合;实现自动闭塞系统移频信号解调.
- This is because that frequency shift can also be found in the wind vortex over the Arctic Ocean, U-wind in Beaufort Sea, V-wind in East Siberian Sea and the PDO index. 因此，除热力因素外，动力因素引起的海冰的平流与该变频现象也存在一定的联系。
- The raindrops approach speed is determined by the frequency shift, and provides a good estimation of the winds, which carry the raindrops. 透过这个频率转变,可导出雨点移近雷达的速度,从而替乘载这些雨点的风力提供了很好的估算。
- The frequency shift can simulate the emissive power of the base station very well and is good to the respiratory effect. 频移可以很好地模拟基站发射功率，这对呼吸效应也有好处。
- Blind FRESH (frequency shift filter) can separate desired signals from spectrally over lapping interference by exploiting cyclostationarity. 摘要利用循环平稳特性可以进行信号提取，频移滤波器对循环频率误差较为敏感。
- Then after amplitude limiting, to be preamplified, demodulated, bandpass filtered, the doppler frequency shift signal is extracted. 经过限幅保护，接收放大，检波和带通滤波后，将多普勒频移信号提取出来。
- 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。
- Frequency shift is a distinctive problem in InSAR system which is produced by the unique geometry of the system resulted from the effect of baseline. 摘要频谱偏移理论是干涉合成孔径雷达系统特有的一个很重要的问题，它是由基线的存在而导致的干涉合成孔径雷达特有的几何关系造成的。
- Massively uses the frequency Shift Keying Signal（FSK） in our country locomotive control signal to transmit each kind of locomotive speed information. 摘要 在我国机车控制信号中大量采用移频键控信号（FSK）来传送各种机车速度控制信息。
- Based on the discussion of the topological structure of a superheterodyne FM receiver, a one chip FM receiver for FSK(Frequency Shift Keying) signal has been designed. 在分析超外差 FM中频接收拓扑结构的基础上 ,设计出一种用于 FSK(移频键控 )信号的单片FM中频接收电路系统。
