SYSTEMS AND METHODS FOR NEQUICK MODELING USING NEURAL NETWORKS
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United States of America Patent
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Jan 25, 2018
app pub date -
Jul 20, 2016
filing date -
Jul 20, 2016
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Abstract
Systems and methods of determining ionosphere delay for a GNSS system are provided. In one embodiment, a GNSS system includes an antenna configured to receive GNSS signals from one or more GNSS satellites. The system further includes a signal processing circuit coupled to the antenna and configured to down convert the GNSS signals from RF to IF. The system further includes a processing device coupled to a memory, the memory including a database of a plurality of weights and an activation function for a neural network, the neural network trained to output an approximation of an output of a NeQuick model. The processing device configured to: apply the plurality of weights and the activation function for the neural network to a plurality of inputs generated from the GNSS signals; and estimate an indication of ionosphere delay based on an output of the neural network.
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