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- 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。
- AFSK Audio Frequency Shift Keying 声频频移键控
- audio frequency shift modulation 声音频率偏移调制
- Eight information automatic block with audio frequency shift modulated track 八信息移频电源屏
- Analysis and Counter-measure of Code Losing in Audio Frequency Shift Modulated Automatic Block with Long Distance 站内长大区段移频掉码问题的分析及对策
- I am majored in audio frequency amplifier. 我主修音频放大器。
- Audio Frequency Shift 成音频率转换
- Frequency Shift Audio Frequency 频移声频
- The middle part of an audio frequency. 中声频,中频声波频率的中间部分
- audio frequency shift modulator 声频移频调制器
- audio frequency shift keying 声频移频健控
- Purpose: Audio frequency power amplifier applications. 用途:用于音频功率放大。
- Scene supervisory system and audio frequency retransmission system; e. 现场监控系统及视音频转播系统;
- Purpose: Audio frequency general purpose ,driver stage amplifier applications. 用途:用于音频放大,激励级放大。
- Can control audio frequency signals remotely,the volume can be modulated. 可对各路音频信号进行远程操控,音量可调;
- 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。
- An electromagnetic wave of audio frequency produced by atmospheric disturbances such as lightning, having a characteristically decreasing frequency responsible for a whistling sound of descending pitch in detection equipment. 啸声干扰一种由于诸如闪电等大气干扰而产生的音频电磁波,具有典型的逐渐减弱频率的特征,该频减引起了检波设备中调逐渐下降的啸声
- 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。
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries