A Dynamic ranging system based on optical carrier-based microwave interferometry

2021 ◽  
Author(s):  
Aiqi Ding ◽  
bin wu ◽  
yibing hou ◽  
Jiantao Yue
Keyword(s):  
Optical Carrier ◽  
Microwave Interferometry

scholarly journals Iteration Bayesian Reweighed Algorithm for Optical Carrier-Based Microwave Interferometry Sensing

Sensors ◽  
2020 ◽  
Vol 20 (11) ◽  
pp. 3079
Author(s):  
Yuxiao Li ◽  
Ciming Zhou ◽  
Dian Fan ◽  
Sijing Liang ◽  
Li Qian
Keyword(s):  
Measurement Data ◽  
Measured Data ◽  
Frequency Fluctuation ◽  
Average Error ◽  
Optical Carrier ◽  
True Value ◽  
S Parameter ◽  
Wide Range ◽  
Microwave Interferometry ◽  
The Impact

This paper proposes a novel iteration Bayesian reweighed (IBR) algorithm to obtain accurate estimates of a measurement parameter that uses only a few noisy measurement data. The method is applied to optimize the frequency fluctuation in an optical carrier-based microwave interferometry (OCMI) system. The algorithm iteratively estimates the frequency of the S-parameter valley point by collecting training samples to rebalance the weights between prior samples, which reduces the impact of noise in the system. Simulation shows that the estimated result of this algorithm is closer to the true value than that of the maximum likelihood estimation (MLE) using the same amount of measured data. Under the influence of system noise, this algorithm optimizes the frequency fluctuation of the S-parameter and reduces the impact of individual measured data. In this study, we applied the algorithm in the strain sensing experiment and compared it with the MLE. When axial strain changes 240 με, the IBR algorithm yields a deviation of 36 με, which is a significant reduction from 138 με (using the MLE method). Moreover, the average error rate decreases from 25% to 3% (with the MLE method), suggesting that the linear fitting degree of the estimated results and accuracy of the system are improved. Moreover, the algorithm has a wide range of applicability, for it can handle different application models in the OCMI system and the systems with frequency fluctuation problems.

Quad-Mode VCSEL Optical Carrier for Long-Reach Ka-Band Millimeter-Wave Over Fiber Link

2021 ◽  
pp. 1-1
Author(s):  
Cheng-Ting Tsai ◽  
Huai-Yung Wang ◽  
Yu-Chieh Chi ◽  
Chih-Hsien Cheng ◽  
Gong-Ru Lin
Keyword(s):  
Millimeter Wave ◽  
Optical Carrier ◽  
Ka Band ◽  
Fiber Link

scholarly journals FTTH and Two-Band RoF Transport Systems Based on an Optical Carrier and Colorless Wavelength Separators

2016 ◽  
Vol 8 (1) ◽  
pp. 1-8 ◽  
Author(s):  
C. H. Chang ◽  
P. C. Peng ◽  
Q. Huang ◽  
W. Y. Yang ◽  
H. L. Hu ◽  
...  
Keyword(s):  
Transport Systems ◽  
Optical Carrier

Advances in optical carrier profiling through high-frequency modulated optical reflectance

2008 ◽  
Vol 26 (1) ◽  
pp. 310 ◽  
Author(s):  
Janusz Bogdanowicz ◽  
Fabian Dortu ◽  
Trudo Clarysse ◽  
Wilfried Vandervorst ◽  
Derrick Shaughnessy ◽  
...  
Keyword(s):  
High Frequency ◽  
Optical Carrier ◽  
Optical Reflectance
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