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DenMerD: a feature enhanced approach to radar beam blockage correction with edge-cloud computing

Liu, Qi; Sun, Jiawei; Zhang, Yonghong; Liu, Xiaodong

Authors

Qi Liu

Jiawei Sun

Yonghong Zhang



Abstract

In the field of meteorology, the global radar network is indispensable for detecting weather phenomena and offering early warning services. Nevertheless, radar data frequently exhibit anomalies, including gaps and clutter, arising from atmospheric refraction, equipment malfunctions, and other factors, resulting in diminished data quality. Traditional radar blockage correction methods, such as employing approximate radial information interpolation and supplementing missing data, often fail to effectively exploit potential patterns in massive radar data, for the large volume of data precludes a thorough analysis and understanding of the inherent complex patterns and dependencies through simple interpolation or supplementation techniques. Fortunately, edge computing possesses certain data processing capabilities and cloud center boasts substantial computational power, which together can collaboratively offer timely computation and storage for the correction of radar beam blockage. To this end, an edge-cloud collaborative driven deep learning model named DenMerD is proposed in this paper, which includes dense connection module and merge distribution (MD) unit. Compared to existing models such as RC-FCN, DenseNet, and VGG, this model greatly improves key performance metrics, with 30.7% improvement in Critical Success Index (CSI), 30.1% improvement in Probability of Detection (POD), and 3.1% improvement in False Alarm Rate (FAR). It also performs well in the Structure Similarity Index Measure (SSIM) metrics compared to its counterparts. These findings underscore the efficacy of the design in improving feature propagation and beam blockage accuracy, and also highlights the potential and value of mobile edge computing in processing large-scale meteorological data.

Journal Article Type Article
Acceptance Date Jan 30, 2024
Online Publication Date Feb 5, 2024
Publication Date 2024
Deposit Date Feb 5, 2024
Publicly Available Date Feb 6, 2024
Electronic ISSN 2192-113X
Publisher Springer
Peer Reviewed Peer Reviewed
Volume 13
Article Number 32
DOI https://doi.org/10.1186/s13677-024-00607-x
Keywords Mobile edge computing, Radar beam blockage correction, Image restoration, Deep learning
Public URL http://researchrepository.napier.ac.uk/Output/3503060

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