The basic principle of the linear frequency modulation absolute distance interferometric plan and the problems existed in beating frequency measurement are described.
论述了线性调频绝对距离干涉测量方案的基本原理以及拍频测量中存在的问题；
In order to measure the Modulation Transfer Function (MTF) of image sensor conveniently, contact measurement using rectangle template is proposed based on sine template contact measurement.
为了方便地测量图像传感器的调制传递函数(MTF)，在正弦模板法基础上，提出了矩形模板接触测量的方法。
The technique of carrier modulation in Moiré interferometry is important in displacement measurement of an object.
在物体变形场的测量中，云纹干涉的载频调制技术有重要作用。
The measurement of modulation transfer function (MTF) of the sampled imaging optoelectronic system is rather complex and irrepeatable for their shift-variant characteristics.
离散光电成像系统因其不再具有平移不变特性，它的调制传递函数测试具有相当的复杂性和不稳定性。
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。
Envelope detection and parameter estimation of each modulation component are the main parts in measurement of voltage fluctuations and flicker.
包络线的检出和调制分量参数估计是电压波动与闪变检测的主要内容。
Modulation domain analysis has become an important part for modern measurement technology. It is better than time domain and frequency domain measurement when indicating frequency variable signal.
调制域分析已经成为现代测试技术不可或缺的部分，在显现频率变化信号时优于时域测量和频域测量。
Temperature measurement principle and modulation absorption spectroscopy were introduced, and the influence of modulation amplitude on gas temperature measurement was analyzed.
介绍了温度测量及调制吸收光谱技术原理，分析了调制幅度对气体温度测量的影响。
The modulation domain measurement technique is presented simply. The application of modulation domain analyzer in the complicated signal frequency measurement analysis is probed.
对调制域测量技术作了简要介绍，探讨了调制域分析仪在复杂信号频率测量分析上的一些应用。
This paper offers a general account of the principle, measurement method and practical application of modulation transfer function in aerial photographic system.
本文重点论述了航摄系统调制传递函数的原理，测定方法和实际应用。
In order to solve the lower measurement efficiency in traditional modulation profilometry, a fast modulation profilometry is proposed based on double color projections.
针对传统调制度轮廓术测量速度较慢的问题，本文提出了彩色双通道投影的调制度轮廓术。
Modulation domain provides insight to complex modulated signals and opens a new field of measurement technology.
调制域为人们打开了分析复杂调制信号的新视角，开辟了测量技术的新天地。
We present a signal_processing system developed for enhancing the sensitivity of absorption measurement based on tunable diode laser wavelength modulation spectroscopy.
基于可调谐半导体激光吸收光谱，提出了一种新的信号处理方法用于提高吸收光谱测量的灵敏度。
Difference absorption measurement and wavelength modulation harmonic measurement are two fundamental approaches for gas light absorption detection.
差分吸收检测和波长调制谐波检测是气体光吸收检测的两种基本方法。
Modulation transfer function is a common method for evaluating the performance of optical imaging system. The measurement of MTF is very important in production and testing.
调制传递函数是评价光学成像系统成像质量的重要方法，因而测量光学系统的调制传递函数在各种成像光学系统生产实践中具有相当重要的作用。
According to frequency spectrum transfer characteristic of modulation and demodulation, we think the position measurement noise is Gaussian narrowband noise.
根据调制解调的频谱转移特性，提出了有效位移噪声是高斯窄带噪声。
Using DFB LD as light source, the detection sensitivity has been greatly improved by light source modulation harmonic measurement.
采用分布反馈式半导体激光器作为光源，通过光源调制实现气体体积分数的谐波检测，显著提高了检测的灵敏度。
The physical mechanism of the modulation law from the particle-phase to the gas-phase was discussed from several points of view by means of flow visualization, PDA and PIV measurement.
通过采用流动显示、PDA、PIV 等多种先进测试手段从定性到定量，从单点时均到全场瞬时，从多个角度深入探讨了两相圆湍射流中近喷口区域颗粒相对气相调制规律的物理机制。
It is feasible that to use CCD device and image processing system in measurement of the modulation transfer function (MTF) of X-ray film and luminescent screen.
本文论证了利用CCD测定X射线胶片和增感屏调制传递函数的可行性，并给出了一种适用于CCD测试数据的处理方法。
In this paper, the measurement method of high frequency brightness modulation laser phase for mechanic surface microcosmic appearance is given out.
提出了用高频光强调制、同源频率合成、软件鉴相的激光相位微距测量方法测量表面微观轮廓高度。
Based on linear frequency modulation continuous wave (FMCW) technique, we have developed a distance measurement method for non contact and non integrating error measurement.
给出一种以频率调制连续波（FMCW）技术为基础的进行无接触、无累加误差和较大动态范围距离测量方法。
A measurement system based on electrochemical frequency modulation (EFM) technique was developed, which could implement EFM measurement.
研制了基于电化学频率调制(efm)技术的测试系统，能够实现EFM测试。
The measurement error is found to decrease with the increase of the modulation current and this relation is applied to finding the optimum experimental condition for the short distance measurement.
分析测量误差与调制电流大小的关系，进而确定短距离测距的最佳实验条件。
A kind of signal processing circuil for the drop volume measurement through the capacitive drop sensor, based on frequency modulation, is introduced.
文中详细介绍利用调频原理通过电容液滴传感器对液滴体积进行测量的方法。
Modulation Domain and Pulse Analyzer (MDPA) is a powerful instrument for modulation domain analysis, also it is a useful tool for time interval measurement.
调制域与脉冲分析仪既是调制域分析的利器，也是脉冲分析的有效工具。
Phase shift error is inevitable in the course of getting modulation value of 3-d measurement with phase shifting technology, and then decreases measurement precision.
通过相移技术获取调制度值的调制度三维测量法，不可避免地存在相移误差，从而降低测量精度。
A new average detection mode permits high-accuracy measurement of signal power with this noise-like spreading modulation.
新型平均检测模式可以对具有类躁音扩展信号功率进行高精度测试。
To decrease the effect of the intensity modulation of the LD on measurement accuracy, a novel LD-SPM fiber-optic interferometer is presented, and the theory of the interferometer is analyzed.
提出一种新的消除激光二极管正弦相位调制干涉仪中光强调制影响的干涉仪，给出了具体的理论分析。
To decrease the effect of the intensity modulation of the LD on measurement accuracy, a novel LD-SPM fiber-optic interferometer is presented, and the theory of the interferometer is analyzed.
提出一种新的消除激光二极管正弦相位调制干涉仪中光强调制影响的干涉仪，给出了具体的理论分析。
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