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Code delay and Doppler shifted frequency would not captured using the conventional GPS receiver in the strong interference case because the received GPS signals which traveled a long distance were very weak. In the paper design of an anti-jamming GPS receiver is proposed. First, the interferences in the received signals are canceled through subspace projecting technique and the resulting interference-free signals are processed by a weight vector which maximizes signal-to-noise ratio. Finally, the simulation result has shown that the method is valid.