Nonlinear Error Compensation of PGC Demodulation With the Calculation of Carrier Phase Delay and Phase Modulation Depth

Yan, Liping; Zhang, Yide; Xie, Jiandong; Lou, Yingtian; Chen, Benyong; Zhang, Shihua; Yan-jiang, Zhou

doi:10.1109/jlt.2021.3049481

Cited by 34 publications

(6 citation statements)

References 26 publications

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“…where  represents the learning rate, which determines the weight change obtained in each cycle of training. Too high a learning rate is not conducive to the stability of the network, and too small a learning rate will increase the training time [9][10]. We design an adaptive learning rate and check the weight correction value to determine the learning rate.…”

Section: Research On Multiple Calibration Methods For Measuring Error...mentioning

confidence: 99%

Research on multiple calibration methods for measuring error of indicator value of withstand voltage tester

Liu,

Sui,

Qin

et al. 2024

J. Phys.: Conf. Ser.

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Voltage resistance testing often needs to be carried out under specific environmental conditions, such as high pressure and high temperature. These complex environments may interfere with the test equipment and calibration process, thus affecting the accuracy of calibration results. Therefore, it is necessary to ensure that the tester can adapt to various environmental conditions and make calibration adjustments accordingly. Therefore, a multi-calibration method based on the BP neural network is proposed to calibrate the error of the indicator value of the voltage tester. The power input and output characteristic function of the withstand voltage tester is established, and the output of each layer is described as the input of the BP neural network. Based on the adjustment results, multiple calibration steps for the measuring error of the voltage tester are designed. The experimental results show that the method can calibrate the measuring error of the voltage tester at different positions at the same time, and the application effect is good.

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Section: Research On Multiple Calibration Methods For Measuring Error...mentioning

confidence: 99%

Research on multiple calibration methods for measuring error of indicator value of withstand voltage tester

Liu,

Sui,

Qin

et al. 2024

J. Phys.: Conf. Ser.

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“…Among them, A and B are constants proportional to the input optical power, C is the depth of phase modulation, 0 G and H are amplitudes of the signal. The filtered signal can be expressed as [12] :…”

Section: Principlementioning

confidence: 99%

Realization of high stability PGC-EKF demodulation algorithm based on FPGA

Xiao,

Xu,

Pan

et al. 2023

AOPC 2023: Optic Fiber Gyro

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In the phase generation carrier (PGC) arctan demodulation schemes, carrier phase delay (CPD) and phase modulation depth (C) fluctuation might lead to incorrect demodulated results. This paper realizes a high-stability PGC-extended Kalman filter (EKF) demodulation algorithm based on a Field-Programmable Gate Array (FPGA). EKF-based ellipse fitting algorithm is used to eliminate nonlinear errors in the two original quadrature signals. The function and logic correctness of the design are verified by simulation. The simulation results show that the algorithm can calculate the ellipse parameters accurately and quickly. In experimental comparisons with the traditional PGC-Arctan demodulation algorithm, the PGC-EKF algorithm demonstrates significant suppression of nonlinear distortion in the demodulated results. As C varies from 1.5rad to 3.5rad, the algorithm achieves a mean SINAD of 38.457 dB with a standard deviation of 0.312 dB.Similarly, as the CPD varies from 0 to  , the mean SINAD remains at 38.033 dB with a standard deviation of 0.777 dB.In addition, the PGC-EKF algorithm exhibits high stability during long-term operation on FPGA boards. This is evidenced by the significantly lower SINAD standard deviation (1.319dB) compared to the PGC-Arctan algorithm (3.296dB) when C is 2.63rad and CPD is 0 degrees. The proposed PGC-EKF demodulation algorithm based on FPGA has broad application prospects in fiber optic interferometric sensors.

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“…e RF antenna module can realize the data transmission and reception of the terminal node. Signal modulation and demodulation can realize the conversion between the digital signal and analog signal, and complete the compression and restoration of video data, image data, and text data [24,25]. e sensor can perceive and acquire the most basic data.…”

Section: Intelligent Terminal and Its Designmentioning

confidence: 99%

Design of Enterprise Economic Management Intelligent Terminal for Big Data Application

Fang

Ouyang

2022

Mathematical Problems in Engineering

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With the rapid development of world economic informatization, the research and application of intelligent terminals are more and more extensive. Through the comprehensive application of big data in modern enterprise economic management, enterprises can more accurately grasp all kinds of information and mine the deep value of data information. In the era of big data, to realize the stable growth of the enterprise economy, relevant personnel need to gradually explore the enterprise economic management mode, take the enterprise financial management as the core development project, speed up the exchange of internal and external data, improve the brand awareness of the enterprise, and let the enterprise occupy a leading position in the market. Traditional enterprise economic management methods cannot run through big data combined with intelligent terminals. Therefore, this article solves the problem of enterprise economic management under the background of big data through the design of intelligent terminals. The design of an intelligent terminal for enterprise economic management under the background of big data can provide complete information for management positions. It is not only a new attempt for enterprises to explore economic management mode but also a major innovation based on an enterprise scale.

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Nonlinear Error Compensation of PGC Demodulation With the Calculation of Carrier Phase Delay and Phase Modulation Depth

Cited by 34 publications

References 26 publications

Research on multiple calibration methods for measuring error of indicator value of withstand voltage tester

Research on multiple calibration methods for measuring error of indicator value of withstand voltage tester

Realization of high stability PGC-EKF demodulation algorithm based on FPGA

Design of Enterprise Economic Management Intelligent Terminal for Big Data Application

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