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Instrumental Receiver Bias Estimation for Ionospheric Total Electron Content by Neural Network Model
Author(s)
Thu, Phyo C.
Saekow, Apitep
Sopon, Thanomsak
Hozumi, Kornyanat
Date Issued
October 1, 2023
Type
Article
Abstract
Total Electron Content (TEC) is one of the most important parameters in the study of the ionosphere, especially for determining ionospheric disturbances. The TEC levels are typically estimated from dual-frequency GPS observation data. Since the measured TEC contains discrepancies such as satellite and receiver biases, they need to be removed to obtain more accurate TEC values. In this work, we estimate the receiver bias using a neural network technique. Based on the exhaustive evaluation, we design a neural network (NN) model with two-hidden layers, and it is trained with datasets from three GNSS observation stations in Thailand. The prediction from the proposed neural network deviates from the baseline reference using the minimum standard deviation method with significantly faster computational time. The trained NN model is also tested for estimating the receiver bias values at other untrained stations in Thailand.
Citation
Ecti Transactions on Electrical Engineering Electronics and Communications, 21(3), 2023