Performance of a digital acquisition circuit for hybrid FH-DS spread spectrum systems

A novel structure of an acquisition circuit which implements a digital noncoherent correlation scheme is presented. In addition, a novel control strategy based on the maximum time to perform the search is proposed. It is concluded that this technique is helpful in hybrid frequency-hopping-direct-sequence systems because it performs a multiple dwell serial search in different hops. As a consequence, the acquisition system is more robust against partial band jammers and/or channel impairments (e.g., multipath).<>