The Realization of High Precision Frequency Measurement System Based on Wet Steam Wetness Measurement System

2009 ◽  
Author(s):  
Shu-e Zhang ◽  
Peipei Li ◽  
Zaiwang Yang ◽  
Zhonghe Han
Keyword(s):  
High Precision ◽  
Measurement System ◽  
Frequency Measurement ◽  
Wet Steam ◽  
Precision Frequency

High-precision frequency measurement system based on different frequency quantization phase comparison

Measurement ◽  
2018 ◽  
Vol 122 ◽  
pp. 220-223 ◽  
Author(s):  
Baoqiang Du ◽  
Songlin Li ◽  
Guangming Huang ◽  
Xin Geng ◽  
Zhuo Li ◽  
...  
Keyword(s):  
High Precision ◽  
Measurement System ◽  
Frequency Measurement ◽  
Precision Frequency

Ultra-high Precision Frequency Measurement Research

2016 ◽  
Vol 9 (6) ◽  
pp. 341-348
Author(s):  
Wang Xuanmin ◽  
Huang Lijun ◽  
Qu Bayi
Keyword(s):  
High Precision ◽  
Frequency Measurement ◽  
Precision Frequency

Error Analysis and Improvement of Equal Precision Frequency Measurement

2014 ◽  
Vol 687-691 ◽  
pp. 841-846 ◽  
Author(s):  
Rong Xiang Wang ◽  
Xia Zhang
Keyword(s):  
Error Analysis ◽  
Measurement System ◽  
Measurement Accuracy ◽  
Frequency Measurement ◽  
Frequency Count ◽  
Frequency Multiplication ◽  
Circuit Performance ◽  
Standard Frequency ◽  
Synchronization Signal ◽  
Precision Frequency

In accordance with the principle of equal precision frequency measurement and theory of errors, in this paper, the problems are discussed that the equal precision frequency measurement eliminates the standard frequency count error. In order to reduce the relative error and improve the measurement accuracy, a method is proposed for phase coincide detection between standard frequency multiplication and measurement frequency demultiplication to open or shut the gate, at the same time, a signal selector is also used to improve circuit performance. This method can effectively solve the problem that the frequency can not be detected without the synchronization signal and improve the performance of the frequency measurement system.

A High-Precision Frequency Measurement Algorithm for FID Signal of Proton Magnetometer

2016 ◽  
Vol 65 (4) ◽  
pp. 898-904 ◽  
Author(s):  
Haobin Dong ◽  
Huan Liu ◽  
Jian Ge ◽  
Zhiwen Yuan ◽  
Zhizhuo Zhao
Keyword(s):  
High Precision ◽  
Frequency Measurement ◽  
Measurement Algorithm ◽  
Precision Frequency

scholarly journals Frequency analyser: A new Android application for high precision frequency measurement

2015 ◽  
Vol 23 (3) ◽  
pp. 471-476 ◽  
Author(s):  
José A. Gómez-Tejedor ◽  
Juan C. Castro-Palacio ◽  
Juan A. Monsoriu
Keyword(s):  
High Precision ◽  
Frequency Measurement ◽  
Android Application ◽  
Precision Frequency

Study of High Precision Frequency Measurement Method of Power System Based on DSP

2011 ◽  
Vol 403-408 ◽  
pp. 3030-3034
Author(s):  
Cui Yun Gao ◽  
Ming Liu ◽  
Wen Jing Li ◽  
Ru Han
Keyword(s):  
Power Systems ◽  
High Precision ◽  
High Frequency ◽  
Detection Method ◽  
Signal To Noise Ratio ◽  
Frequency Measurement ◽  
Frequency Noise ◽  
Zero Crossing ◽  
Signal Simulation ◽  
Precision Frequency

In the power systems, frequency is an important parameter for harmonic analysis. This paper proposes a modified high precision zero-crossing detection method. The high frequency noise will affect the power system’s frequency measurement, FIR processing is used for the power signal. Simulation shows that after effective De-noising or when the signal-to-noise ratio (SNR) is higher, the method can reach the precision of 0.01Hz and meet the requirements of frequency measurement precision.

scholarly journals High precision frequency measurement of terahertz waves using optical combs from a Mach–Zehnder-modulator-based flat comb generator

2019 ◽  
Vol 44 (3) ◽  
pp. 487 ◽  
Author(s):  
Isao Morohashi ◽  
Ikufumi Katayama ◽  
Mayu Kirigaya ◽  
Yoshihisa Irimajiri ◽  
Norihiko Sekine ◽  
...  
Keyword(s):  
High Precision ◽  
Frequency Measurement ◽  
Terahertz Waves ◽  
Mach Zehnder Modulator ◽  
Precision Frequency
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