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Akademický článek

Snow Depth Retrieval Using Detrended SNR From GNSS-R With Bidirectional GRU

Autor: Wei Liu, Zihui Lin, Yuan Hu, Aodong Tian, Xintai Yuan, Jens Wickert

Publikováno v: IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 17, Pp 18235-18246 (2024)

Snow depth monitoring is crucial for hydrology, climate research, and avalanche prediction. While traditional global navigation satellite system (GNSS) reflectometer methods offer cost-effective snow thickness retrieval, they suffer from poor accurac

Externí odkaz: https://doaj.org/article/00253e5eb2d24badb00473379c9e135a

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Akademický článek

GNSS-R Snow Depth Inversion Study Based on SNR-SVR

Autor: Yuan Hu, Jingxin Wang, Wei Liu, Xintai Yuan, Jens Wickert

Publikováno v: IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 17, Pp 18025-18037 (2024)

The global navigation satellite system reflectometry (GNSS-R) technology has shown significant potential in retrieving snow depth using signal-to-noise ratio (SNR) data. However, compared to traditional in situ snow depth measurement techniques, we h

Externí odkaz: https://doaj.org/article/477361cf824443a0a8dc8298a81972e4

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Akademický článek

Advancing Accuracy in Sea Level Estimation with GNSS-R: A Fusion of LSTM-DNN-Based Deep Learning and SNR Residual Sequences

Autor: Yuan Hu, Aodong Tian, Qingyun Yan, Wei Liu, Jens Wickert, Xintai Yuan

Publikováno v: Remote Sensing, Vol 16, Iss 11, p 1874 (2024)

The global navigation satellite system reflectometry (GNSS-R) technique has shown promise in retrieving sea levels using signal-to-noise ratio (SNR) data. However, its accuracy and performance are often limited compared to conventional tide gauges, p

Externí odkaz: https://doaj.org/article/b0617ae02bf54a9ea78c4e00d2e771ba

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Akademický článek

An SVM-Based Snow Detection Algorithm for GNSS-R Snow Depth Retrievals

Autor: Yuan Hu, Xintai Yuan, Wei Liu, Qingsong Hu, Jens Wickert, Zhihao Jiang

Publikováno v: IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 15, Pp 6046-6052 (2022)

The signal-to-noise ratio (SNR) is important observations in global navigation satellite system-reflectometry (GNSS-R) technology. The oscillation frequency in the SNR arc is sensitive to different reflecting surfaces and can be used to build height

Externí odkaz: https://doaj.org/article/4ecc1cf6e59c4e03a3a470ac174788d5

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Akademický článek

GNSS-IR Model of Sea Level Height Estimation Combining Variational Mode Decomposition

Autor: Yuan Hu, Xintai Yuan, Wei Liu, Jens Wickert, Zhihao Jiang, Rudiger Haas

Publikováno v: IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 14, Pp 10405-10414 (2021)

The global navigation satellite system-reflections (GNSS-R) signal has been confirmed to be useful for retrieving sea level height. At present, the GNSS-interferometric reflectometry (GNSS-IR) technology based on the least square method to process si

Externí odkaz: https://doaj.org/article/063a7efd1a0243f482226fa7d621c6c4

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GNSS-R Sea Ice Detection Based on Linear Discriminant Analysis

Autor: Yuan Hu, Zhihao Jiang, Wei Liu, Xintai Yuan, Qinsong Hu, Jens Wickert

Publikováno v: IEEE Transactions on Geoscience and Remote Sensing. 61:1-12

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a143e797f2e6a837a374351b1499fe68
https://doi.org/10.1109/tgrs.2023.3269088

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Snow depth estimation from GNSS SNR data using variational mode decomposition

Autor: Yuan Hu, Xintai Yuan, Wei Liu, Qingsong Hu, Jens Wickert, Zhihao Jiang

Publikováno v: GPS Solution

In recent years, Global Navigation Satellite System-Interferometric Reflectometry (GNSS-IR), a new remote sensing technique, has been widely used to monitor surface signature parameters. In the classical GNSS-IR technology, poor signal separation wil

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d2ffe2326cf7c52b2c1e88d49225d98f
https://gfzpublic.gfz-potsdam.de/pubman/item/item_5015137

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GNSS-IR Model of Sea Level Height Estimation Combining Variational Mode Decomposition

Autor: Wei Liu, Xintai Yuan, Jens Wickert, Yuan Hu, Zhihao Jiang, Rüdiger Haas

Publikováno v: IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 14, Pp 10405-10414 (2021)
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::843c26187f4a5b9278398a652f47e62f
https://ieeexplore.ieee.org/document/9563242/

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GNSS-R Snow Depth Inversion Based on Variational Mode Decomposition With Multi-GNSS Constellations

Autor: Yuan Hu, Xintai Yuan, Wei Liu, Jens Wickert, Zhihao Jiang

Publikováno v: IEEE Transactions on Geoscience and Remote Sensing

Snow depth monitoring is meaningful for climate analysis, hydrological research, and snow disaster prevention. Global navigation satellite system-reflectometry (GNSS-R) technology uses the relationship between the modulation frequency of the signal-t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dcbbe3024ef3223412a58f5989bda4ea
https://gfzpublic.gfz-potsdam.de/pubman/item/item_5012488

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