SYSTEM FOR DETECTION AND LOCATION OF POSITION OF MAN-IN-DISTRESS IN WATER Russian patent published in 2005 - IPC

FIELD: life-saving appliances.

SUBSTANCE: proposed system includes life jacket with light sources and transmitters with transmitting antennae and equipment arranged in helicopter. Each transmitter includes master oscillator, phase manipulator, modulating code generator and power amplifier. Equipment carried on helicopter board includes receiving antenna 23 mounted above helicopter main rotor hub and receiving antennae 24, 25 mounted on tips of main rotor, mixers 26, 27, 29, 40, 61, 74 and 76, heterodynes 28,39, amplifiers 30,31, 34, 62, 75 of first intermediate frequency, multipliers 32,33, 37, 65, 70, 72, 79, narrow-band filters 46, 47, reference generator 49 kinematically linked with helicopter engine 48, frequency meters 50, 78, 81, arithmetical unit 69, band-pass filters 54,57, phase inverters 52, 55, 58, adders 53, 56, 59, 64, switch 68, 90º phase shifters 60, 63, recording unit 43 and standard frequency unit 73.

EFFECT: extended functional capabilities due to individual determination of motion of man-in-distress.

9 dwg