In this paper, based on flight-experimental research of the information properties radar signals, reflected from different classes and types of air targets, develop procedures recognition air targets state on following basis “single target, with their number – group targets with number of group targets and targets in each group”, class of single target based on basis “turbojet aircraft – turboprop aircraft – helicopter – missile” the type of single target based on basis “turbojet aircraft”, separate air target and types of group air target by turbojet aircraft class, as well as develop method of air targets complex recognition in air-based pulse-Doppler radar on first step of analyse signals that combined this recognition procedures.