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pps signal
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  pps信号
     This article gives us a brief introduction of GPS system and shows us the applications of GPS to time transmitting and precise time measuring It also introduces the lime-Unified system that is based on GPS and suggests a way to indemnify the 1PPS signal.
     文章简要介绍了GPS组成讨论GPS在时间传递、精密测时等方面的应用,阐述了基于GPS的时统系统的实现。 并提出了一种1PPS信号的补偿方法。
短句来源
     By measuring local oscillator through two 16-bit counters(one in CPU),the paper improves the accuracy of short wave device's1pps signal connecting to computer network.
     通过使用两个16位计数器对本地晶振进行测量,提高了短波设备的1pps信号接入计算机网络的精度。
短句来源
     This paper starts with adoption precision PPS signal based on GPS to synchronize RP subsystem, by designing special GSG module and GPS receiver realize RPC framesignal synchronization far away Optimizing the spectrum utilization efficiency We have resolved the RP framesignal nonsynchronization and synchronization interfere between lowpower from different RPC′s RP framesignal Providing a credible technique ensure with lowpower nonblindarea It is a feasible and virtual method to resolve PAS′s framesignal synchronization
     从采用来自 GPS的精确 PPS信号来同步 RP子系统的思路出发 ,通过设计专用的 GSG模块和 GPS信号接收装置 ,实现了相距较远的 RPC帧信号同步 ,优化了频谱利用率 ,解决了现行系统中源自不同 RPC的 RP帧信号不同步和小功率基站之间的同步干扰问题 ,为小功率覆盖无盲区提供可靠的技术保障 ,是一种可行的解决 PA S帧信号同步问题的有效方法
短句来源
     This paper introduces using GPS's precision PPS signal to synchronize RP subsystem. and provides a credible method for RPC frame-signal synchronization far away.
     文章介绍了用GPS的精确PPS信号来同步RP子系统,为相距较远的RPC帧信号的同步提供一种可靠方法。
短句来源
     Compared with the solution of using the PPS signal or crystal oscillator as the sync clock, this scheme eliminates the negative effects on the sync precision imposed by the interference and the uncertain drift of the crystal oscillator.
     该方案消除了采用PPS信号或晶振作为同步时钟时,由于受干扰和晶振存在不确定漂移等因素对同步精度造成的影响。
短句来源
  “pps signal”译为未确定词的双语例句
     Using the 1PPS signal from GPS receiver and combining the time sequence produced by CPLD, the system realizes the synchronal data collection of MIMU and GPS.
     采用GPS接收机输出的1PPS脉冲,结合CPLD产生的时序,实现MIMU和GPS数据的同步采集。
短句来源
     (2) A method is discussed to extract the instantaneous frequency of PPS signal in wavelet domain. The usage is made of the relationship between the maximum of wavelet modulus and the wavelet function.
     2.研究了多项式相位信号小波变换系数和模极大值特性,并根据多项式相位信号本身的特征,由小波系数模极大值与小波函数的关系,讨论了一种在小波域内提取瞬时频率的方法。
短句来源
     This article expatiates on the method of 1pps signal's autotracking on the principle of digital phase-locked, introduces the main circuit scheme, and discusses the general behaviour of this method.
     本文阐述利用数字锁相原理实现对准秒信号的跟踪方法,介绍了主要电路的设计方案,并讨论了该方法的一般特性。
短句来源
     A Method to Lock the High Frequency Oscillator with GPS 1pps Signal
     用GPS秒信号锁定高频振荡器的方法研究
短句来源
     The PPS signal received by a GPS/GLONASS receiving card is regarded as a reference of the whole clock synchronization system that is consist of two levels PLL: the first one uses software implementation and its output 10MHz clock is taken as the reference of the second one. The second level PLL is comprised of two PLLs and outputs 16f_c and 48f_c(f_c=1.2288MHz).
     由一个双星接收卡接收GPS/GLONASS标准秒信号作为整个时钟同步系统的参考,分两级锁相环实现:第一级锁相环采用软件锁相,输出10MHz信号作为第二级锁相环的参考源,第二级锁相环为2个模拟锁相环,分别输出16fc和48fc(fc=1.2288MHz)。
短句来源
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  相似匹配句对
     transmission of signal;
     信号的传递 ;
短句来源
     TRACKING 1 PPS SIGNAL ON THE PRINCIPLE OF DIGITAL PHASE-LOCKED
     用数字锁相实现秒信号跟踪
短句来源
     Signal processing
     信号处理技术
短句来源
     A Method to Lock the High Frequency Oscillator with GPS 1pps Signal
     用GPS秒信号锁定高频振荡器的方法研究
短句来源
     Modifying Technology of PPS
     PPS的改性技术
短句来源
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  pps signal
The two receivers used the same antenna through a splitter, and had antenna cables and 1PPS signal cables of the same length.
      
The 1PPS signal is valid only, whenever the GPS modules provide a valid position fix.
      
The Meinberg unit outputs a 1 PPS signal accurate to within 100 ns and is drift free.
      
The DGPS supplies a 1pps signal used by the time code interface to provide the system synchronization.
      
The PPS signal is broadened by an RC filter with a time constant of 75 ms.
      
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Shanxi, Beijing and Shanghai observatories cooperated with U. S. Naval Obsevatory in making two portable clock experiments in 1981 and 1982. (A high performance cesium clock was compared with the 1 pps signals from master clock, Loran Creceiver and TV Line-6 receiver in defferent observatories.) The comparison of the experimental results with the prediction of the time delay between transmitter and each observatory indicates that the accuracy of LF synchronization technique in China can reach ±1μs, timing...

Shanxi, Beijing and Shanghai observatories cooperated with U. S. Naval Obsevatory in making two portable clock experiments in 1981 and 1982. (A high performance cesium clock was compared with the 1 pps signals from master clock, Loran Creceiver and TV Line-6 receiver in defferent observatories.) The comparison of the experimental results with the prediction of the time delay between transmitter and each observatory indicates that the accuracy of LF synchronization technique in China can reach ±1μs, timing precision is 0.05—0.2 μs at distance of 2000 km. (It has been shown that there is the systematic error in the Daily Relative Phase Values, Ser. 4 of U. S. Naval Observatory for Northwest Pacific Loran-C chain.) For passive CCTV synchronization, timing accuracy is 2 μs or better and daily frequency calibration precision is (2—20)×10~(-13).

根据美国海军天文台与中国科学院陕西天文台、上海天文台、北京天文台合作进行的两次飞行钟实验表明,我国目前广泛采用的长波技术的同步准确度为±1μs,定时精度为0.05至2μs。已经证实美国海军天文台对LC/9970 Loran-C链的时号改正数存在约4μs的系统差。对无源电视同步来说,时间同步的准确度能达到2μs或更好,日校频精度能达(2—20)×10~(-13)。

This article gives us a brief introduction of GPS system and shows us the applications of GPS to time transmitting and precise time measuring It also introduces the lime-Unified system that is based on GPS and suggests a way to indemnify the 1PPS signal.

文章简要介绍了GPS组成讨论GPS在时间传递、精密测时等方面的应用,阐述了基于GPS的时统系统的实现。并提出了一种1PPS信号的补偿方法。

The scheme of synchronized sampling unit based on GPS is introduced briefly in the first part.Then this paper proposes in detail the software and hardware methods to lessen and eliminate jamming of pulse per second PPS signal in synchronized sampling unit based on GPS,according to the distinctive feature that PPS is always precisely located at the border between two successive seconds.The software method is simple and feasible.It is suitable for the situation that the inside resources of CPU...

The scheme of synchronized sampling unit based on GPS is introduced briefly in the first part.Then this paper proposes in detail the software and hardware methods to lessen and eliminate jamming of pulse per second PPS signal in synchronized sampling unit based on GPS,according to the distinctive feature that PPS is always precisely located at the border between two successive seconds.The software method is simple and feasible.It is suitable for the situation that the inside resources of CPU are enough.The hardware method can save the inside resources of CPU.It is suitable for the situation that the load of CPU is heavy.The results of experiments show that the methods are effective to overcome the influence of jamming on synchronized sampling based on GPS.

为削弱和消除干扰对基于 GPS同步采样装置的影响 ,在简要介绍 GPS同步采样装置的基础上 ,根据秒脉冲总是位于 2 s交界处的特点 ,提出了防止干扰 GPS秒脉冲信号的软硬件措施。其中 ,软件鉴别法简单可行 ,适用于 CPU内部资源充足的情况下 ;而硬件措施节约了 CPU的片内资源 ,适用于 CPU负担较重的应用场合。试验结果表明 ,该方法可有效地克服干扰信号对 GPS同步采样装置的影响。

 
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