A parallax is the difference in the angular position of two stationary points relative to each other from different viewing positions.
The altitude is the difference in the angular positions of the shadow and sighting vanes.
However, such unilateration approach never delivers the angular position with reference to the detector.
The platform may have index marks for setting different angular positions relative to the base.
Maneuvers are used to gain a better angular position in relation to the opponent.
Goniophotometers measure the spatial distribution of light visible to the human eye at a specific angular position.
Unlike an airplane, a helicopter that had moved beyond the limits of correct angular position would simply drop like a stone.
Thus the equation of motion relating the two angular positions is given by:
A gyroscope is a device used to measure or maintain an angular position.