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。
So, for the same SNR, edge techniques can improve the measurement accuracy of Brillouin frequency shift greatly comparing with the conventional detection techniques.
所以，在相同信噪比下，与常规检测技术相比，边缘检测技术可以大大提高布里渊频移测量精度。
The system can be used to measure the voltage responsivity and detectivity of infrared detector at different modulation frequency with rapid speed and high accuracy, it meets the need of measurement.
该系统可以自动测试不同调制频率下红外探测器的电压响应率和探测率，能够快速准确地完成测试任务，满足了测试要求。
The principle and method for calibrating the frequency by means of colour subcarrier signal of broadcast TV are introduced in detail, and the corresponding measurement accuracy is given in this paper.
本文较详细介绍利用广播电视彩色付载频信号进行校频的原理和方法，并给出相应的测量精度。
Proposed a novel scheme to measure the Brillouin frequency shift and power change, and analyzed the measurement accuracy of Brillouin frequency shift.
提出了一种同时测量布里渊频移和功率变化的新方案，同时对系统的布里渊频移测量精度进行了分析。
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。
The accuracy of the dielectric loss measurement based on harmonic analysis algorithm is greatly influenced by the frequency fluctuation.
用谐波分析法进行介损测量时，很容易受到系统频率波动的影响，从而降低测量的准确度。
The measuring frequency of salinity during its microwave measurement and the polarization state and the effect of incidence Angle to the accuracy of measuring have been analyzed.
分析了微波辐射计测盐时的测量频率、极化状态及入射角对测量精度的影响。
In order to achieve high measurement accuracy a frequency stabilizing device is used.
为提高该激光测量系统的精度还采用了激光的稳频措施。
This article sum up the principle of frequency display in HP8559A spectrum analyzer. And introduce a design to improve frequency accuracy of measurement by using Single-chip-computer.
本文介绍了H P 8559A频谱分析仪频率测量显示电路的基本工作原理，同时阐述了怎样使用单片机对该型号频谱仪实施改造以改善其频率测量准确度。
The factors affecting on the measurement accuracy of Brillouin frequency shift are analyzed, the relation between the measurement of Brillouin frequency shift and signal to noise (SNR) is obtained.
分析了影响布里渊频移测量精度的因素，给出了布里渊频移测量精度和信噪比的关系。
Because it is related to the magnitude of noise RMS voltage, the frequency characteristic of circuit and the power spectrum of noise source, the accuracy of measurement is quite low.
但由于与噪声电压的大小，网络频率特性及噪声源功率谱形式有关，故测量准确度较低。
The test results prove that by using the system the frequency measurement accuracy can achieve thousandth and the relative error of measurement within 1%.
测试结果证明采用该系统对频率测量的精度可以达到千分之一，测量的相 对误差不大于1％。
The accuracy measurement of the signal can be achieved with a suitable windowing operation in time domain and an interpolation algorithm in frequency domain.
该算法通过对时域信号加合适的窗函数，并在频域采用相应的内插算法，可以有效地减小测量过程中信号的频谱泄漏，得到精确的测量结果。
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。
This paper presents a new method of high accuracy measurement of frequency.
提出一种新的高精度频率测量方法。
The final-plating machine is one of the main equipment for producing the quartz crystal resonators, The accuracy of its frequency measurement system is to define the accuracy of the integral machine.
微调机是石英晶体谐振器成品生产的主要设备，其频率测量系统的精度决定了微调机的微调精度。
The disadvantage of high precision frequency accuracy measurement method available is that an expensive high-resolution time interval counter is needed.
常用高精度校频算法的不足在于需要昂贵的高分辨时间间隔计数器。
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。
This thesis makes a study of high accuracy time interval and frequency difference measurement techniques.
本文对高精度时间差、频率差测量技术进行了研究。
The present state of the dual-frequency laser interferometer in the world is introduced in brief. The trends of development to high resolution, high accuracy, high measurement speed etc. are given.
文章概述了国内外双频激光干涉仪产品的现状，介绍了近年来双频激光干涉仪向高分辨率、高精度、高测速等几个方向的发展趋势。
The digital frequency meter to achieve the desired requirements of the variable-range measurement, measuring range 0.1Hz-9999MHz, accuracy up to 0.1Hz.
该数字频率计达到预期要求，实现了可变量程测量，测量范围0.1Hz—9999MHz，精度可达0。
The digital frequency meter to achieve the desired requirements of the variable-range measurement, measuring range 0.1Hz-9999MHz, accuracy up to 0.1Hz.
该数字频率计达到预期要求，实现了可变量程测量，测量范围0.1Hz—9999MHz，精度可达0。
应用推荐