On the estimability of parameters in undifferenced, uncombined GNSS network and PPP-RTK user models by means of S-system theory

Combined GPS + BDS for short to long baseline RTK positioning

Combined BDS, Galileo, QZSS and GPS single-frequency RTK

First combined COMPASS/BeiDou-2 and GPS positioning results in Australia. Part I: Single-receiver and relative code-only positionin

First combined COMPASS/BeiDou-2 and GPS positioning results in Australia. Part II: Single- and multiple-frequency single-baseline RTK positioning

Combined GPS and BeiDou instantaneous RTK positioning

Instantaneous BeiDou+GPS RTK positioning with high cut-off elevation angles