NAVIGATION SYSTEM Russian patent published in 1998 - IPC

FIELD: automatic control over seal seismic survey. SUBSTANCE: navigation system includes timer, computer to which input receivers of satellite systems determining coordinates of object are connected, log, gyrocompass, seismic station, echo sounders which outputs and inputs are correspondingly connected to input and output of computer, graphical steersman monitor which input is linked to output of computer. System may be fitted with Doppler log, automatic steerer, system checking quality, printer, plotter, digital table. Timer is intended to record and correct time interval between sending of series seismic signals directly during passing over investigated section of profile. EFFECT: increased speed and accuracy of system. 4 cl, 2 dwg