TY - CONF T1 - MODELING AND PREDICTION OF IONOSPHERIC DISTURBANCES AFFECTING THE ACCURACY OF POSITION MEASUREMENTS (INCLUDING SCINTILLATIONS) JO - ENVIRONMENTAL EFFECTS ON SPACECRAFT POSITIONING AND TRAJECTORIES PY - 1993/01/01 AU - QUEGAN S ED - Jones AV VL - 73 SP - 17 EP - 37 Y2 - 2024/12/22 ER -