SATELLITE SYSTEM FOR DETECTION OF WATERCRAFTS AND AIRCRAFTS IN STATE OF EMERGENCY Russian patent published in 2005 - IPC

FIELD: detection of emergency radio buoys.

SUBSTANCE: system has two emergency radio buoys, satellite and information receipt station. Satellite has four antennae, three receipt devices, two memory devices and transmitter with antenna. information receipt station has antenna, receiver, two information processing devices, device for connecting to communication networks, control device and communication device of special rescue organizations. Third receipt device of satellite has five receipt antennae, seven mixers, six amplifiers of first intermediate frequency, two heterodynes, second intermediate frequency amplifier, block for detecting phase-manipulated signal, phase doubling block, two means for measuring spectrum width, comparison block, threshold block, delay line, two keys, phase-manipulated signal demodulator, ten multipliers, five narrow-band filters, lower frequency filter, four phase detector, five adders, four band filters, three phase inverters, two phase rotators for 90° and amplitude detector.

EFFECT: higher precision, higher interference resistance.

9 dwg