.~ Relative attitude indication along 3 axes with photodetection
DEFINITION
Classification: 356/139.03
Relative attitude indication along 3 axes with photodetection:
(under subclass 138) Subject matter wherein the measured angles define and indicate the yaw, pitch, and roll orientation or the like in space of a detected object or of a photodetecting instrument relative to an arbitrarily chosen axis or axes or to geophysical planes.
SEE OR SEARCH THIS CLASS, SUBCLASS:
141.1+, for angle measurement that defines an angle at the detecting station with respect to a beam in terms other than 3 axes of orientation.
152.2+, for angle measurement that defines an angle at the object with respect to a beam in terms other than 3 axes of orientation.
SEE OR SEARCH CLASS
244, Aeronautics,
171, for attitude sensors that may involve optics.
250, Radiant Energy, 206.1+, for alternative outputs of measured coordinates that are not displayed, per se.
