Abstract: In the acquisition ways of the direct sequence spread spectrum code, sequence probability ratio test(SPRT) acquisition is a better way, acquisition time reduced 2 to 10 times compared with correlation acquisition. For faster acquiring PN(pseudo noise) code, a new acquisition structure-parallel SPRT acquisition is brought forward, namely parallel SPRT acquisition. It will improve the acquisition speed bigger if the hardware scale is appropriately added, and acquire the relation of acquisition time and parameters.

Key words: spread spectrum communication, pseudo noise acquisition, acquisition time