The frequency measurement is of practical value in electric industry.
频率测量在电力工业中极具实用价值。
This paper introduces the design of the changeable gate frequency measurement.
介绍了变闸门频率测量仪的设计方法。
The method and technique are meaningful for ordinary low frequency measurement.
这一方法与技术对于一般低频频率的测量具有普遍意义。
The frequency measurement for dual signals is crucial in radar signal processing.
信号频率测量在雷达信号处理中起到重要的作用。
AD7714 is a complete analog front end for low-frequency measurement applications.
AD 7714是一个完整的用于低频测量应用的模拟前端。
In this paper, a system of highly accurate dynamic frequency measurement is described.
本文介绍了一种高精度动态频率测量系统。
The measurement of ultrahigh frequency is one of the difficulties in frequency measurement.
特高频率的测量是频率测量中的难点之一。
This method is based on the multi-cycle synchronization frequency measurement has higher accuracy.
该方法继承了多周期同步测频法的优点，同时提高了测量精度。
Instantaneous frequency measurement (DIFM) receiver is one of important component part of EW system.
瞬时测频接收机是电子战系统的重要组成部分之一。
The recent achievements in the field of power system frequency measurement are summarisedin this paper.
较为全面地综述了国内外在电力系统频率概念及其测量技术方面的研究成果。
This paper introduces a system of frequency measurement and control system based on single-chip microcomputer control.
本文在对单片机小系统进行研究的基础上，介绍了一种由单片机控制的频率测量控制系统。
This paper introduces a frequency measurement system based on an AT89C2051 micro controller for hydroelectric generator unit.
介绍了以AT 89 C 2051单片机为核心的水轮发电机组频率测量系统。
This paper presents a new algorithm used to demodulate high code rate DQPSK telemetry signal by digital frequency measurement.
本文根据高码速率DQPSK遥测信号的特点，介绍了一种通过数字瞬时测频来完成对高码速率DQPSK信号解调的方法。
Simulation shows that the frequency measurement has preferable precision and voltage calculating is improved by frequency tracking.
该方法频率测量精度高，实行频率跟踪采样，提高了电压计算精。
The testing error and the reason of error are analyzed, compared with the results received by the sweep-frequency measurement method.
将微悬臂梁和微薄膜振动特性的测量结果与频率扫描法的测试结果进行了比对，对产生的误差及误差来源进行了分析。
The principle of SAW gas sensor and signal processing circuit is discussed, especially a circuit of frequency measurement is designed.
介绍声表面波(SAW)气体传感器原理及其信号处理电路原理，重点设计了传感器的频率检测电路。
This paper proposed the theory of digital counting instantaneous frequency measurement and analyzed the error of frequency measurement.
文章介绍了一种用直接数字计数测量瞬时频率的原理，并进行了测频误差分析。
An algorithm for power system frequency measurement based on numerical differentiation and central Lagrange interpolation is presented.
提出了一种基于数字微分和拉格朗日插值的系统频率快速而准确的测量算法。
A method, which realizes the fast frequency measurement for dual sinusoidal signals basing on DFT and autocorrelation theory, is given.
基于DFT和自相关理论，该文提出了一种双正弦信号频率的快速估计方法。
The paper describes frequency bias, characteristic of frequency measurement and test platform design. Measurement results are discussed.
详细描述了军用电力系统的频率偏差，频率测试特点及测试平台设计，讨论分析了实际测试结果。
They measured the radio frequency instead of optical frequency measurement with optical frequency comb and technology of octave-spanning.
利用光频梳和倍频技术，把对光频的测量变为对射频的测量，这样就能够很容易地测出光的频率。
The frequency-guided receiver requires target signal's carrier frequency, gained by frequency measurement, to induct data rate conversion.
引导式接收需要采用测频方法得到目标信号载频，由测频结果引导后续数字信号处理器降低数据率。
The sensor array (130) collects data from a pattern (155) using at least one of a capacitive measurement and a radio frequency measurement.
该传感器阵列(130)使用电容式测量和射频测量中的至少一种从图案(155)收集数据。
The design of an X band broadband microwave correlator used in digital instantaneous frequency measurement (DIFM) is introduced in the paper.
本文介绍了应用于数字瞬时测频接收机(DIFM)中的X波段宽带微波相关器的设计。
The measurement accuracy and work efficiency are greatly improved by turbine blade natural frequency measurement system based on industrial PC.
基于PC机的汽轮机叶片静态频率测量系统可大大提高测量的精确度和工作效率。
In the process of abbreviated mobile power stations parallel connection, frequency measurement is the key and basis of the parallel connection.
小型移动电站并列过程中的频率测量是实现其并列的基础和关键。
The MCU is used for the center controller, achieving high accuracy frequency measurement by methods of multi-cycle synchronism and quantization time-delay.
提出了一种高精度频率测量系统的设计方法，应用单片机技术将多周期同步法和量化时延法相结合，实现了频率的高精度快速测量。
The elaborate error analysis of synchronous frequency measurement method is presented and some amelioration of the method based on the analysis is proposed.
对同步测频法进行了详尽的误差分析并由此对该方法做了改进。
In this paper, the design of the frequency measurement and correcting system can be achieved with less cost, and it also offered the system performance test.
通过对该方法灵活运用，本文用较少的代价完成了频率测量及校正系统的设计，并对该系统进行了性能测试。
This new method reduces the influence of time response of Fourier filtering on frequency measurement and improves the accuracy of transient frequency measurement.
新的算法有效地补偿了富氏滤波的时间响应对频率测量造成的影响，提高了算法的暂态测频精度。其程序和计算非常简单。
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