2021 | OriginalPaper | Chapter
Performance Analysis of a Digital Acquisition Circuit for DS/FH Spread Spectrum Signals
Author : Yanzhong Zhang
Published in: Footprints in Cambridge and Aviation Industries of China
Publisher: Springer Singapore
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Fast acquisition is the major challenge for DS (direct sequence)/FH (frequency hopping) spread spectrum system. A DS/FH acquisition circuit which implements a digital noncoherent correlation scheme is studied extensively. The closed-form expressions of the mean acquisition time by single dwell decision and two-dwell decision are obtained with the state diagram respectively. The results show that, in the circumstance of low signal noise ration (SNR), the approach of two-dwell decision performs better than the approach of single dwell decision.