Motivated by recent research on cooperative search of autonomous vehicles, a new approach for searching unknown targets is introduced in this paper. The unknown targets are assumed to be static. ZAMBONI search in spiral curve form is considered to implement the cooperation of vehicles. Algorithms that based on geometry underlying search process are discussed to make vehicles act in the spiral curves form. The receding horizon control is introduced for obstacle avoidance which can result in a feasible trajectory during the search process. Simulations of the hybrid method based on ZAMBONI search and receding horizon control show promising results.
