Abstract
An artificial Neural Network (NN) model was developed to estimate the semi-major axis (a), the eccentricity (e) and the inclination (i) of a geostationary satellite orbit. To facilitate a comparison between the NN model developed herewith and a real case, the TÜRKSAT lB geostationary satellite has been taken as example. A code that numerically solves the parameters of the TÜRKSAT's orbit, namely METUAEEL, is used to generate the training data for the NN model and to evaluate its performance. A Multi-Layer Perceptron (MLP) type NN model is constructed and it is trained by the Steepest Descent algorithm with one dimensional search. There are two different approaches studied for the estimation of the orbit parameters. In the first one the NN is trained 'on-line' while in the second one 'offline' training is performed.
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