The phase comparison between fault feeder and healthy feeder is one of important criteria in fault line selection for neutral non-effective grounding systems.
小电流接地系统发生单相接地故障时，故障线路与健全线路在特征频段内零序电流的相位差别是接地选线判据的重要依据之一。
That can be regarded as a phase comparison protection and also has the function of amplitude comparison.
它具有相位比较的功能，也兼有幅值比较的作用。
The measurement of sound speed in the air is studied in the experiment by phase comparison method and standing wave method.
通过实验，应用相位比较法和驻波法对空气中的声速测量进行了研究。
A phase comparator compares the phase of the reference clock with that of the output clock and outputs a phase comparison signal.
相位比较器比较基准时钟和输出时钟的相位，并输出相位比较信号。
The phase comparison error is the primary factor leading to mistaken action in the selective leakage protective system of underground LV networks based on zero sequence current direction.
在基于零序电流方向原理的矿井低压电网选择性漏电保护中，比相误差是导致保护误动的主要因素。
The invention discloses a high-precision absolute distance measurement system based on an interferometric phase comparison method, belonging to the technical field of precision measurement.
本发明公开了一种基于干涉相位比较法的高精度绝对距离测量系统，属于精密测量技术领域。
The design concept and working principle of the system are discussed, and the key technologies including black-white bar coding, phase comparison modules and system control program are analyzed.
详细阐述了系统工作设计思想与工作原理，并对其中的关键技术黑白条形码编码方式、相位比较模块与系统控制程序等进行了详细分析。
In this method the transient fault signals are analyzed with wavelets transform to obtain the transient fault information, and the fault circuit is selected by the synthetic phase comparison method.
该方法利用小波变换分析所采集的故障暂态信号，提取用于选线的暂态信息，并采用综合相位比较法确定故障线路。
Phase comparison is a high precision comparing method for frequency standard.
比相法是一种高精度的频标比对方法。
On the research of traditional phase noise measurement methods, a new phase processing and phase noise measurement method based on Equivalent phase Comparison Frequency is proposed in this paper.
本论文在对传统相位噪声测量方法研究的基础上，提出了基于等效鉴相频率的相位处理和相位噪声的测量。
True azimuth of moving target is determined using phase-comparison interferometer.
动目标的真实方位由相位比较干涉仪测定。
True azimuth of moving target is determined using phase-comparison interferometer.
动目标的真实方位由相位比较干涉仪测定。
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