Fig. 5From: Improving BDS broadcast ephemeris accuracy using ground-satellite-link observationsUpper: orbit radial difference of C01 between ODTS orbits and reference refined orbits (red line), and between 2-day arc refined orbits and reference refined orbits (blue line), where the 2-day arc refined orbits are predicted for 24-h. Lower: Orbit-only SISRE values of C01 using the ODTS orbits in red, and those using the refined 2-day arc orbits in blueBack to article page