A Synchronization Assistance Method in GPS and BD2 Combined Receivers

To speed up the procedure of obtaining the transmit time of satellite signals,a new method is proposed to assist synchronization of satellite signals which can be therefore used for positioning immediately.Moreover,this method can also support the assisted synchronization between different satellite systems. The test conducted to assess the new method corroborate that it is stable and efficient,and can remarkably improve the performance of the GPS and BD2 combined receiver especially in obstructive circumstances.