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This concise paper considers the effect on the autocorrelation function of a pseudonoise (PN) code when the acquisition scheme only integrates coherently over part of the code and then noncoherently combines these results. The peak-to-null ratio of the effective PN autocorrelation function is shown to degrade to n^-1/2, where n is the number of PN symbols over which coherent integration takes place.
D. E. Cartier (Sun,) studied this question.