Generation of Ionospheric Error and Confidence Estimates for WAASJun 1, 1996·Chao,Y. C.,Tsai,Y. J.,Evans,J.,Barrows,A.,Lawrence,Walter,T.Changdon Kee,Enge,P.,Powell,D.,Parkinson,B. W.· 0 min readLast updated on Jun 1, 1996 AuthorsChangdon KeeProfessor Emeritus← Future Satellite Navigation System: Wide-area Augmentation System (WAAS) Jun 1, 1996GPS Satellite Ephemeris Error Estimation using National Satellite Testbed (NSTB) Data Jun 1, 1996 →