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- frequency shifted audio tone 移频单音频
- Frequency Shift Audio Frequency 频移声频
- 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.
- On the base of reducing the problem, this paper put forward the idea improving bonding circuit to automatic block with audio frequency shift modulated track circuit and other signal equipmemt on the Hu Hang and Zhe Gan line. 在减少自动闭塞初期故障的基础上,对沪杭、赣线移频自动闭塞与其他信号设备的结合电路,提出了改进意见和实施措施。
- Whenever the audio tone of the detector sounded , a diver would mark the spot with a white cork float and return later to excavate it. 一旦探测器发出音频信号,潜水员就用软木浮标作上标记,待稍后进行挖掘。
- Whenever the audio tone of the detector sounded ,a diver would mark the spot with a white cork float and return later to excavate it. 一旦探测器发出音频信号,潜水员就用软木浮标作上标记,待稍后进行挖掘。
- Whenever the audio tone of the detector sounded, a diver would mark the spot with a white cork float and return later to excavate it. 一旦探测器发出音频信号,潜水员就用软木浮标作上标记,待稍后进行挖掘。
- 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。
- AFSK Audio Frequency Shift Keying 声频频移键控
- audio frequency shift modulation 声音频率偏移调制
- 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。
- 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。