maximal correlation result in one embodiment if the maximal correlation result does not exceed the predetermined threshold then it can be determined that the corresponding satellite is not included in the base band signal after determining whether a satellite signal output from one of the allocated satellites is included in the base band signal the acq channel 300 can continue to determine whether a satellite signal output from a next one of the allocated satellites is included in the base band signal after determining whether the satellite signals output from all the allocated satellites are included in the base band signal the acq channel 300 can capture the tracking information from the satellite signals which are included in the base band signal and output to the tracking module 250 for further processing fig4 illustrates a flowchart 400 of operations performed by a base band signal processor e g the base band signal processor 220 in fig2 in accordance with one embodiment of the present invention fig4 is described in combination with fig2 when a base band signal is input into the base band signal processor 220 the configurator 260 can select a set of available acquisition acq channels in the acquisition module 230 to receive the base band signal in block 402 in block 404 the configurator 260 can allocate.