Abstract:This paper proposes a new geometry-free and ionosphere-free triple-frequency ambiguity resolution(NGIF-TCAR). The new method can aid wide-lane ambiguity and narrow-lane ambiguity to eliminate ionospheric residuals by assigning pseudorange observation different weight value. Both wide-lane and narrow-lane ambiguity are affected by observation noise, and can be success fully fixed by rounding off the average float ambiguity over several epochs. The new method can effectively achieve the long baseline ambiguity rapid resolution by using the measured GPS/BDS of medium and long baseline triple-frequency data.