Computer for data conversion and stabilization

Claim 1

A NAVIGATION SYSTEM COMPUTER COMPRISING, AN ANTENNA RIGIDLY FIXED TO THE AIRFRAME OF AN AIRCRAFT AND EMITTING A PLURALITY OF SIGNAL BEAMS TOWARD THE EARTH''S SURFACE FOR REFLECTION THEREBY, MEANS RESPONSIVE TO ECHO SIGNALS REFLECTED FROM THE EARTH''S SURFACE FOR PRODUCING TRANSVERSE, LONGITUDINAL AND VERTICAL VELOCITY COORDINATE SIGNALS, A PITCH RESOLVER HAVING ITS ROTOR POSITIONED IN ACCORDANCE WITH THE PITCH OF SAID AIRCRAFT AND ENERGIZED BY SIGNALS REPRESENTATIVE OF AIRCRAFT LONGITUDINAL VELOCITY AND AIRCRAFT VERTICAL VELOCITY, A ROLL RESOLVER HAVING ITS ROTOR POSITIONED IN ACCORDANCE WITH THE ROLL OF SAID AIRCRAFT AND ENERGIZED BY A SIGNAL REPRESENTATIVE OF AIRCRAFT TRANSVERSE VELOCITY AND ONE OUTPUT DERIVED FROM SAID PITCH RESOLVER, MEANS FOR COMPARING SAID LONGITUDINAL COORDINATE VELOCITY SIGNAL AND ANOTHER OUTPUT OF SAID PITCH RESOLVER FOR PRODUCING A FIRST ERROR SIGNAL, MEANS COMPARING SAID TRANSVERSE COORDINATE SIGNAL AND ONE OUTPUT OF SAID ROLL RESOLVER FOR PRODUCING A SECOND ERROR SIGNAL, FIRST SERVO MEANS ENERGIZED BY SAID FIRST ERROR SIGNAL FOR APPLYING A PITCH CORRECTION SIGNAL TO THE AIRCRAFT LONGITUDINAL VELOCITY SIGNAL IMPRESSED ON SAID PITCH RESOLVER, AND SECOND SERVO MEANS ENERGIZED BY SAID SECOND ERROR SIGNAL FOR APPLYING A PITCH AND ROLL CORRECTION SIGNAL TO SAID AIRCRAFT TRANSVERSE VELOCITY SIGNAL IMPRESSED ON SAID ROLL RESOLVER.