time and frequency measurement

This paper analyzes the principle of time domain measurement function of high per-formance spectrum analyzer and its use in Amplitude modulation ( AM), Frequency modulation ( FM) and pulse modulation test.

本文分析了高性能频谱分析仪时域测量功能的原理，并给出其时域测量功能在调幅、调频、脉冲调制测试中的应用。

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It also introduces the development of time and frequency measurement and control techniques which are the most representative in the metrology area. It can reflect the relationship among instruments and the newest achievements of science and technology.

同时还就测试计量领域最有代表性的时频测控技术的发展、近年来在国际上的影响反映了仪器与测量技术与现代科学技术的最新成就之间的互为依存的关系。

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Comparison between Analog and Digital Processing Method in Time and Frequency Measurement

模拟和数字处理方式在时频测控领域中的比对研究

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No.203 Institute of CASIC-metrology and measurement research and quantity-value transfer on microwave, radio time-frequency and electricity.

中国航天科工集团二院203所 - 无线电技术,连接器,计量校准检定技术, 频率控制技术,自动测试技术,综合保障技术.

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It is an new approach of time interval and frequency measurement, which can be used to measurement short time interval by detecting the phase coincidence point between the signal and its transfer delay with related length.

这一理论利用信号的时&空关系通过对被测时间信号与其在长度空间上传输延迟的重合检测来测量短时间间隔，依此为基础可完成各种时间间隔与频率测量仪器。

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Author suggests that increasing number of measurement taps and prolonging sampling time and enhancing sampling frequency will decrease signals aliasing and leakiness.

并提出在进行压力脉动试验时，应增加测点、延长采样时间、提高采样频率以避免信号遗漏和信号混叠等现象的发生。

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Many methods have been developed to measure the properties of these complicated properties, such as time domain and frequency domain method, single-port and dual-port measurement methods.

许多方法已被开发来测量这些复杂的属性，如在时域或频域的方法；单端口或双端口的测量方法，但每个方法都受限于特定频率的性质和应用程序制约因素。

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