信号钟

In the method,the position of the bell-like optoelectronic pulse peak signal from a coordinator gyroscope was accurately measured,and the position was used as time reference to measure the phase.

该方法可准确检测从位标器陀螺仪输出的钟形光电脉冲信号峰值点的位置，并以其为时间基准点进行相位测量，同时判断被测2个信号之间的时间间隔以及超前与滞后关系。

It measures accurately the peak value of the bell-like optoelectronic pulse signal come from coordinator gyro rotor ,which is used for the time standard in phase measurement.

提出了一种新的相位测量方法，该方法准确检测了从位标器陀螺仪输出的钟形光电脉冲信号峰值点的位置，并以其为时间基准点进行相位测量，同时判断被测两信号之间的时间间隔以及超前、滞后关系，同时针对在现场中的干扰因素，提出了相应的解决措施。

It measures accurately the peak value of the bell-like optoelectronic pulse signal from coordinator gyro rotor , which is used for the time standard in phase measurement.

提出了一种相位测量方法，该方法可以准确检测从位标器陀螺仪输出的钟形光电脉冲信号峰值点的位置并以其为时间基准点进行相位测量，并可判断被测两信号之间的时间间隔以及超前滞后关系。

In humans melatonin levels rise at night, in response to darkness and cues from the circadian clock.

人类的褪黑激素水平在夜晚上升，以响应黑暗和昼夜节律钟发出的信号。

In humans melatonin levels rise at night, in response to darknessand cues from the circadian clock.

人类的褪黑激素水平在夜晚上升，以响应黑暗和昼夜节律钟发出的信号。

The error signal is smoothed by loop filter, then it is used to change the control register of interpolator and decimator: The proposed algorithm can track the frequency shift of sampling clock. The algorithm is simulated in both AWGN and multipath fading channel.

这种方法在发送端相邻载波间采用差分QPSK调制，在接收端利用QPSK的差分解调信号获得同步误差信号，从而获得关于OFDM符号同步和采样钟同步调整的算法，其特点是无需专门的同步导频信号。

The mathematical models of the delay of the GPS signal in the circumstance are put forward respectively. The computation of orbital arc of the two satellite constellations is based on two body problem and perturbations models. An algorithm based on the IRI model and thin layer model is used to simulate the ionospheric delay of the GPS signal. The error models of observation, multipath, relativity and antenna phase center bias are also researched. Under the consideration of the autocorrelation of the electronical measurements, the autoregressive model of time series is introduced into the noise models.

在信号仿真中，研究了利用二体运动和摄动法计算LEO卫星至GPS卫星星座的几何距离的问题；在信号的误差模型中，研究了电离层时延的IRI2001模型和单层投影模型；讨论了观测误差、多径效应、相对论效应和天线相位中心偏移的误差模型；结合电子测量噪声的具有自相关特性的经验，研究了观测误差的AR模型；结合实测数据分析，讨论了接收机钟差和卫星钟差的误差建模问题。

The flow chart and the algorithm structure of the optimization design program are illustrated in detail.

说明了优化设计程序的算法结构及基本流程，并对实验中的实际塞曼磁场和锶原子光晶格钟磁光阱信号进行测量。

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主要产品有：正压式空气呼吸器、消防空气呼吸器、氧气呼吸器、充气泵、消防泵、长管呼吸器、逃生呼吸器、泡沫枪，救生衣灯，圈灯，筏灯，油水分离器，防护服，保温服，防化服，隔热服，救生服，救生衣，灭火器材，档鼠器，示位灯，释放器，号钟，号锣，雾钟，救生浮索，消防员装备，消防斧，耐火绳，消防靴，头盔，软梯，号角，烟火信号，抛绳器，抛绳设备，牺牲阳极，救生消防器材公司通过由法国BVQI国际质量体系认证的ISO9001：2000质量管理体系。

Respirator, bubble guns, life jackets lights,救生圈lights, liferaft lights, fire rescue, oil and water separator, protective clothing, thermal insulation suits, anti-chemical warfare suits, insulated clothing, rescue suits, life jackets, fire-fighting equipment, file mice, showing - Lights, the release, of 10 minutes and, gongs, fog bell, life-saving floating cable, firemen and equipment, fire ax, fire-resistant rope, fire boots, helmets, Ruanti, horn, pyrotechnic signals, throw rope, throw rope equipment, sacrifice Anode

呼吸器，泡沫枪，救生衣灯，救生圈灯，救生筏灯，救生消防，油水分离器，防护服，保温服，防化服，隔热服，救生服，救生衣，灭火器材，档鼠器，示位灯，释放器，号钟，号锣，雾钟，救生浮索，消防员装备，消防斧，耐火绳，消防靴，头盔，软梯，号角，烟火信号，抛绳器，抛绳设备，牺牲阳极

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。