Differentially coherent code acquisition in wideband jamming

This paper considers the use of differentially coherent (DC) matched filter (MF) code acquisition in a direct-sequence (DS) spread-spectrum system. Simulation results in wideband jamming are presented. The performance of structure is compared to conventional noncoherent (NC) MF acquisition. The performance measure is the mean acquisition time, T
_MA
. The results indicate that the differentially coherent method is a robust method by allowing also wideband jamming in quite severe Doppler shifts in addition to previously investigated narrowband interference and data modulation conditions