TEC Map Completion Using DCGAN and Poisson Blending
Name
Space Weather - 2020 - Pan - TEC Map Completion Using DCGAN and Poisson Blending.pdf
Description
Published version
Size
24.15 MB
Format
Adobe PDF
Checksum (MD5)
ae4f790807ca50f7e1f0aeea06e1888b
Author(s)
Pan, Yang
Jin, Mingwu
Zhang, Shunrong
Deng, Yue
Date Issued
April 6, 2020
Journal
Space Weather
Publisher
American Geophysical Union
Citation
Pan, Y., Jin, M., Zhang, S., & Deng, Y. (2020). TEC map completion using DCGAN and Poisson blending. Space Weather, 18, e2019SW002390.
Version
Final published version
Abstract
Because of the limited coverage of global navigation satellite system (GNSS) receivers, total electron content (TEC) maps are not complete. The processing to obtain complete TEC maps is time consuming and needs the collaboration of five international GNSS service (IGS) centers to consolidate final completed IGS TEC maps. The advance of deep learning offers powerful tools to perform certain tasks in data science, such as image completion (or inpainting). Among them, deep convolutional generative adversarial network (DCGAN) is capable of learning the properties of the objects and recovering missing data effectively. With years of IGS TEC maps for training, the combination of DCGAN and Poisson blending (DCGAN‐PB) is able to effectively learn the completion process of IGS TEC maps. Both random and more realistic masks are used to test the performance of DCGAN‐PB. The results with random masks (15–40% missing data) show that DCGAN‐PB can achieve better TEC map completion than DCGAN alone, and more training data can significantly improve its generalization. For the cross‐validation experiment using the realistic mask from Massachusetts Institute of Technology (MIT)‐TEC data (~52% missing data), DCGAN‐PB achieves the average root mean squared error about three absolute TEC units (TECu) for high solar activity years and less than two TECu for low solar activity years, which is about 50% reduction of means and more than 50% reduction on standard deviations compared to two conventional single‐image inpainting methods. The DCGAN‐PB model can lead to an efficient automatic completion tool for TEC maps by minimizing the manual work.
MIT Department
Haystack Observatory
Terms of Use
Creative Commons Attribution
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1029/2019sw002390
