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The traditional acquisition technology of low oribit GPS signal has been widely applied in the design of GPS navigation receiver.However,navigation receiver can only accept the navigation signal which comes from the other end of the earth when running above the navigation constellation,which results the decline of GPS navigation visibility and signal power,and the navigation signal power from high oribit navigation receiver will reduce 10dB at least than low oribit navigation receiver and traditional fast acquisition design can not meet design requirements of high oribit navigation receiver.Therefore,this paper present a design which increase times of coherent integration to improve ratio of carrier and noise of received signal,at the same time,it uses full link simulation by simulinkto vertify feasibility of the design,the final design of weak signal acquisition,through the test of Xilinkcompany Virtex4 series FPGA chip based on the weak signal acquisition sensitivity up to -176dB.Because the GLONASS navigation system and BDS navigation and GPS navigation system using spread spectrum communication system,different with GPS navigation system in production of presucode ratio and presurange and the carrier frequence paramaters.Therefore,this fast acquisition algorithm for GPS weak signal adapt to the design of GLONASS navigation reciver and BDS navigation reciever.