Fig. 2From: Models and performance of SBAS and PPP of BDSTypical BDS SBAS corrections based static PPP coordinate errors of BJDN station (00:00–06:00, DoY 134 in 2020) with dual-frequency B1/B3 ionospheric-free combinations, dual-frequency UdUc model, and single-frequency B1 UdUc modelBack to article page