@INPROCEEDINGS {12967,
author={P. Silva and J. Sanguino and T. Ferreira and A. J. Rodrigues},
doi={},
booktitle={URSI Seminar of the Portuguese Committee},
title={Improving GNSS Availability by Using Predicted Doppler Measurements},
year={2012},
month={November},
volume={--},
pages={-----} 
}