Abstract: On the analysis of local best model and topological structure affect of particle swarm optimization (PSO), an algorithm for frequency hopping (FH) component search was proposed based on PSO using a ring topology. Controlled by the degree of information exchange between the particles, the particles were automatically gathered in the component time and frequency center, which overcome the problems that termination condition is difficult to determine using matching pursuit and a priori knowledge is necessary using traditional multimodal PSO algorithm for FH signal adaptive decomposition.