VLBI schedules for Galileo Frame Tie Study

These schedules are used to find the optimal distribution of VLBI transmitters (VT) in the Galileo space segement for frame ties.

Therefore different numbers and distributions of Galileo satellites being equipped with a VT are investigated. The scenarios having either one, two or three satellites of the Galileo space segment equipped with a VT are investigated. Context and methodology In total, six different satellite configurations ("scenarios") are considered, varying in the number and orbital plane distribution of Galileo satellites equipped with a VT: 1A – 1 satellite with VT in plane A 1A1B – 1 satellite with VT in plane A and 1 in plane B 2A – 2 satellites with VT in plane A 1A2B – 1 satellite with VT in plane A and 2 in plane B 3A – 3 satellites with VT in plane A 1A1B1C – 1 satellite with VT in each of the planes A, B, and C For each scenario, different proportions of satellite observations relative to the total number of observations are tested.