The correlator is a key component of high dynamic GPS receiver.The GPS 12 channels semi-custom correlator chip under high dynamic condition was developed by means of FPGA technology

and the working principle and related structures of the correlator and the detailed design of each module were described.The tracking channel module

the time base generator module

the registers module and the address decoding module were designed by using modular design.VHDL language programming for each module was implemented in the FPGA.The experimental results indicated that:it was uniform with the theoretical analysis

and the correlator could work stably with the TMS320C6713

under high dynamic indicators that the velocity

accelerator and change rate of accelerator were 12 km/s

10g

and 10g/s respectively.