Search Results - "Li, Wudong"
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Extracting Common Mode Errors of Regional GNSS Position Time Series in the Presence of Missing Data by Variational Bayesian Principal Component Analysis
Published in Sensors (Basel, Switzerland) (17-04-2020)“…Removal of the common mode error (CME) is very important for the investigation of global navigation satellite systems' (GNSS) error and the estimation of an…”
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Spatial Variations of Stochastic Noise Properties in GPS Time Series
Published in Remote sensing (Basel, Switzerland) (01-11-2021)“…The noise in position time series of 568 GPS (Global Position System) stations across North America with an observation span of ten years has been investigated…”
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A New Spatial Filtering Algorithm for Noisy and Missing GNSS Position Time Series Using Weighted Expectation Maximization Principal Component Analysis: A Case Study for Regional GNSS Network in Xinjiang Province
Published in Remote sensing (Basel, Switzerland) (01-03-2022)“…Common Mode Error (CME) presents a kind of spatially correlated error that is widespread in regional Global Navigation Satellite System (GNSS) networks and…”
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An effective interpolation strategy for mitigating the day boundary discontinuities of precise GNSS orbit products
Published in GPS solutions (01-07-2021)“…A precise Global Navigation Satellite System (GNSS) satellite orbit is an essential prerequisite for precise point positioning (PPP). Due to the daily orbit…”
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Nitrogen resource recovery from mature leachate via heat extraction technology: An engineering project application
Published in Water science and technology (01-01-2022)“…A large pool of ammonia in mature leachate is challenging to treat with a membrane bioreactor system to meet the discharge Standard for Pollution Control on…”
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Process analysis of the extract unit of vacuum residue through mixed C4 solvent for deasphalting
Published in Chemical engineering and processing (2010)“…By employing the EXTRACT module in Aspen Plus Software with the aid of selected PSRK equation from our previous work [W. Li, P. Du, F. Cao, W. Ying, D. Fang,…”
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A new deep self-attention neural network for GNSS coordinate time series prediction
Published in GPS solutions (01-03-2024)“…High-precision GNSS coordinate time series prediction provides a critical reference for applications such as crustal deformation, structural safety monitoring,…”
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One hybrid model combining singular spectrum analysis and LS+ARMA for polar motion prediction
Published in Advances in space research (01-01-2017)“…Accurate real-time polar motion parameters play an important role in satellite navigation and positioning and spacecraft tracking. To meet the needs for…”
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One sliding PCA method to detect ionospheric anomalies before strong Earthquakes: Cases study of Qinghai, Honshu, Hotan and Nepal earthquakes
Published in Advances in space research (15-04-2017)“…•One sliding PCA method is put forward to detect pre-earthquake ionospheric anomaly.•The effect of sliding window on the background TEC is analyzed.•The 27-day…”
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