Journal
IEEE TRANSACTIONS ON SIGNAL PROCESSING
Volume 53, Issue 10, Pages 3910-3915Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TSP.2005.855428
Keywords
anti-jamming; GPS; interference suppression; self-coherence
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In this correspondence, we present a self-coherence antijamming global positioning system (GPS) receiver that relies on the unique structure of the coarse/acquisition (C/A) code of the GPS signals. Since the C/A-code is repeated 20 times within each navigation symbol, the GPS signal exhibits strong self-coherence between chip-rate samples separated by integer multiples of the spreading gain. The proposed receiver utilizes this inherent self-coherence property to excise interferers whose temporal structures are different from those of the GPS signals. It is shown that the proposed receiver is a blind receiver that does not require the knowledge of the satellite positions.
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