FIELD: radio navigation. SUBSTANCE: transmitter-indicator has aerial 1, preamplifier 2, signal switch 3, converter 4, correlator 5, processor for detecting signals, processor 7 for measuring coordinates of location, former 8 for forming frequency spectrum, unit 9 for measuring braking distance, unit 10 for forming radius of hazard, control command unit 11, threshold element 12, unit 13 for determining closest hazard point, traverse determining unit 14, trigger 15, AND gate 16, distance measuring unit 17, memory units 18,19, decoder 20, OR gate 21, counters 22,23. EFFECT: improved efficiency. 8 cl, 11 dwg
