NAVIGATIONAL DEVICE Russian patent published in 2003 - IPC

FIELD: navigational aids; spatial orientation on any surface characterized by presence of magnetic field. SUBSTANCE: proposed device includes angular orientation sensor , motion sensor, sensor indicating change in angular orientation, rectilinear section parameter computer, coordinate cyclic change computer, present parameter computer, bearing-distance computer, initial data input unit, motion cycle storage unit, time mark sensor, reference point sensor, switchboard, control unit, indication unit and OR gate. Angular orientation change unit includes first switch, first subtracter and single pulse shaper. Rectilinear section parameter computer includes second switch, second storage unit and single pulse counter. Coordinate cyclic change computer includes sine-cosine sensor and first and second multipliers. Present coordinate change computer includes first and second storage units. Present coordinate computer includes first and second adders. Bearing-distance computer includes first and second determination units of magnetic azimuth, first and second range determination units, second, third, fourth and fifth subtracters. All components are interconnected by definite method. EFFECT: extended functional capabilities. 1 dwg