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    An Integrity Equation for Use with Space Based Augmentation Systems

    Walter, T. / Enge, P. / Hansen, A. et al. | British Library Conference Proceedings | 1997

    A Proposed Integrity Equation for WAAS MOPS

    Walter, T. / Enge, P. K. / Hansen, A. et al. | British Library Conference Proceedings | 1997

    GPS Satellite Clock Event on SVN27 and its Impact on Augmented Navigation Systems

    Hansen, A. / Walter, T. / Enge, P. et al. | British Library Conference Proceedings | 1998

    The WAAS ionospheric threat model

    Sparks, L. / Mannucci, A. J. / Walter, T. et al. | NTRS | 2001