A combined crosstalk cancellation method based on wavelet packet denoising and Welch’s method for operational transfer path analysis

Cheng, Wei; Chu, Yapeng; Chen, Xuefeng; Zhou, Guanghui; Gao, Lin; Blamaud, Diane; Lu, Jiming

doi:10.1088/1361-6501/ab0787

Cited by 9 publications

(3 citation statements)

References 26 publications

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“…Penelitian ini menggunakan metode kuantitatif berdasarkan pendekatan analisis jalur (path analysis). Model analisis jalur merupakan pengembangan dari metode regresi linear berganda yang memungkingkan menganalisis hubungan sebab akibat yang lebih kompleks (Burchi et al, 2020;Cheng et al, 2019;Du et al, 2021;Fu et al, 2019;M. Li et al, 2021;Qin et al, 2020;Song et al, 2021;Vaitkus et al, 2019;Xia et al, 2021).…”

Section: Metodeunclassified

Mengukur Dampak Pendidikan, Pengangguran, Pengeluaran Perkapita, Inflasi terhadap Kemiskinan Dan Gini Ratio di Kota Makassar

Ginting

2023

JIUBJ

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This study aims to measure the impact of education, unemployment, per capita spending, inflation on poverty and the gini ratio in Makassar City. The methodology of this study is to use a quantitative approach based on path analysis. The results of this study found that the unemployment rate and inflation had a positive effect on poverty or in other words had a directly proportional relationship. Conversely, the average length of schooling and per capita expenditure have a negative effect on poverty, in other words, it shows an inverse relationship. Judging from the dimensions of economic growth. Next, the variable average length of schooling and per capita expenditure both show a relationship that is directly proportional to economic growth. Meanwhile, the open unemployment rate, inflation and poverty each have a negative effect on economic growth. Thus, each of these variables has an inverse relationship to economic growth. The implication of this research is that the government must be more aggressive in pushing for more pro-poor development and inclusive economic development so as to achieve better socio-economic development.

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Section: Metodeunclassified

Mengukur Dampak Pendidikan, Pengangguran, Pengeluaran Perkapita, Inflasi terhadap Kemiskinan Dan Gini Ratio di Kota Makassar

Ginting

2023

JIUBJ

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“…Yan [11] used OTPA to study the effects of plate radiation noises on interior noises based on the local SVD. In order to improve the accuracy of transfer path identification and contrib ution evaluation, Cheng [12,13] applied Tikhonov regularization, wavelet packet denoising and the Welch method to OTPA, and the results showed that the accuracy could be obviously improved. Jiang [14] redefined the transfer function of the reconstruction model using a fractional order accumu lative regularization filter (FARF) to overcome the illposed ness.…”

Section: An Accurate and Reliable Operational Transfer Path Analysis ...mentioning

confidence: 99%

An accurate and reliable operational transfer path analysis for transfer path contribution evaluation based on Landweber iterative method

Cheng

Zhu

et al. 2019

Meas. Sci. Technol.

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To improve the accuracy and reliability of operational transfer path analysis (OTPA) in transfer path identification and path contribution evaluation, Landweber-iterative-method-based OTPA is proposed in this paper. Firstly, the vibration data at the reference points and the target points in the operating conditions are obtained. Secondly, the appropriate iteration model and the iterative termination criterion of the Landweber iterative method are designed to improve the fitting degrees of the transmissibility function matrix. Thirdly, the transmissibility function matrix is obtained using the data in experimental operating conditions. Finally, transfer path identification and contribution evaluation are carried out in practical operating conditions, and the major transfer paths are identified. Furthermore, the accuracy, reliability and noise tolerance capability of the proposed method are comparatively studied with truncated singular value decomposition and Tikhonov-regularization-based OTPA, according to typical numerical case studies and experimental case studies on a cylindrical test bed. Generally, the proposed method can obviously improve the accuracy and reliability of transfer path identification and path contribution evaluation, and provide significant evidence for vibration reduction and the control of mechanical systems.

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“…Recently, Han et al 73 used the Welch power spectrum to analyze radar‐emitter received signals and discovered the effectiveness of the algorithm. Cheng et al 74 adopted the Welch method to perform auto‐power and cross‐power spectra operational transfer path analyses. They accurately obtained the prior transmissibility functions and concluded that the proposed method performed more accurately and reliably than the conventional method.…”

Section: Introductionmentioning

confidence: 99%

Wavelet and power spectrum analysis of global navigation satellite system multipath error modeling and mitigation

Ansari

Bae

2021

Satell Commun Network

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Summary This study investigates the multipath error modeling and mitigation for triple‐frequency global navigation satellite system (GNSS) signals inside South Korea. Multifrequency global positioning system (GPS), globalnaya navigatsionnaya sputnikovaya sistema (GLONASS), and Galileo data are collected in an environment where the receiver must track these three constellations in both low and high multipath scenarios. First, an advanced power spectrum analysis technique known as Welch method is performed using experimental data, and its benefits and drawbacks are described. In the second attempt, the spectrogram method is utilized to perform multipath feature time–frequency analysis. Although the abnormal frequency peak presented by the spectrogram is stable, the spectrogram does not support the precise recognition of the multipath error peak occurrence. Hence, in the third attempt, continuous wavelet transforms (CWT) are applied to highlight this type of peak resolution. The CWT function successfully indicated the maximum and minimum peak resolutions and exhibited a clear wavelet energy spread. In the final stage, experimental data are reconstructed by inverse CWT (ICWT), and comparative results in terms of root mean square before and after the ICWT are estimated. After implementing the inverse wavelet method in high and low multipath error of experimental data, overall average percentages of multipath mitigation reduction compared to actual multipath error are estimated to be 95.74% and 98.79%, respectively. This study demonstrates the high efficiency of the wavelet method as well as the effectiveness as a multipath error reduction approach. These improvements can be considered as significant in achieving high‐precision positioning accuracy.

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A combined crosstalk cancellation method based on wavelet packet denoising and Welch’s method for operational transfer path analysis

Cited by 9 publications

References 26 publications

Mengukur Dampak Pendidikan, Pengangguran, Pengeluaran Perkapita, Inflasi terhadap Kemiskinan Dan Gini Ratio di Kota Makassar

Mengukur Dampak Pendidikan, Pengangguran, Pengeluaran Perkapita, Inflasi terhadap Kemiskinan Dan Gini Ratio di Kota Makassar

An accurate and reliable operational transfer path analysis for transfer path contribution evaluation based on Landweber iterative method

Wavelet and power spectrum analysis of global navigation satellite system multipath error modeling and mitigation

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