An adaptive time-division multiplexing receiver and method for a GNSS system using pilot and data channels for each satellite are disclosed. According to the present invention, multiplexing hypotheses of correlation are properly distributed to pilot and data channels. The pilot and data channels of one satellite can be dealt with as two satellites. Alternatively, correlation is mainly executed to the pilot channel. After the pilot channel is acquired, information such as code phase and Doppler frequency of the satellite are known. Therefore, the data can be demodulated based on the known information.