Affiliation:
1. College of Electronic Engineering, Chengdu University of Information Technology, Chengdu 610225, China
2. Key Open Laboratory of Atmospheric Sounding, China Meteorological Administration, Chengdu 610225, China
Abstract
Convolutional neural networks (CNNs) have been utilized extensively to improve the resolution of weather radar. Most existing CNN-based super-resolution algorithms using PPI (Plan position indicator, which provides a maplike presentation in polar coordinates of range and angle) images plotted by radar data lead to the loss of some valid information by using image processing methods for super-resolution reconstruction. To solve this problem, a weather radar that echoes the super-resolution reconstruction algorithm—based on residual attention back-projection network (RABPN)—is proposed to improve the the radar base data resolution. RABPN consists of multiple Residual Attention Groups (RAGs) connected with long skip connections to form a deep network; each RAG is composed of some residual attention blocks (RABs) connected with short skip connections. The residual attention block mined the mutual relationship between low-resolution radar echoes and high-resolution radar echoes by adding a channel attention mechanism to the deep back-projection network (DBPN). Experimental results demonstrate that RABPN outperforms the algorithms compared in this paper in visual evaluation aspects and quantitative analysis, allowing a more refined radar echo structure, especially in terms of echo details and edge structure features.
Funder
National Natural Science Foundation of China
Open Grants of the State Key Laboratory of Severe Weather
Sichuan Department of Science and Technology
Joint Research Project for Meteorological Capacity Improvement
Key Laboratory of Atmosphere Sounding
Key Scientific Research Projects of Jiangsu Provincial Meteorological Bureau
Key R&D Program of Yunnan Provincial Department of Science and Technology
Key Grant Project of Science and Technology Innovation Capacity Improvement Program of CUIT
Subject
General Earth and Planetary Sciences
Cited by
2 articles.
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