Abstract: A new energy-based high-sensitivity acquisition method is proposed for solving the problem of data transition during the acquisition of the next-generation GNSS signals(as Galileo,and GPS modernization).The basic idea proposed consists in a modification of the 2-D function evaluated in the search space based on time domain FFT parallel acquisition and utilizes an energy-based method on frequency search space to recover the data transition position.Simulation of Galileo signals shows it performs a noise average,the false alarm probability is reduced.In the meantime,combining with long data non-coherent integration and acquisition on both data and pilot channels further mitigate the noise influence to achieve moderate high-sensitivity acquisition.