Description: Modern terms of radio-location are characterized by the rapid reveal of means of radio-location and wide application by the opponent of special measures and weapon. Reasons for the benefit of transition from active and active-passive radar-location to passive-active are given. The way of construction of one-item passive-active means of detection of the air purposes is proposed. In a general view the algorithm of functioning of offered means is described.
Keywords: air object, reveal, passive-active, one-item