An adaptive synchronization system based on auto - correlation principle for frequency - hopping signals is presented. In order to adapt this system to shortwave mobile channels , the synchronization sheme for short integral time , serial acquisition tracking and multistate lock is used. This scheme can overcome the influence on synchronization system due to fading , multiuser and other man - made interferences in shortwave mobile channels and can stably operate under the conditions of stronger interference and deeper fading. Also the state control strategy for multistate lock is presented and its function is described in detail.