velocity error การใช้

• The most important of these improvement was the introduction of maximum likelihood error estimation using the Kalman algorithm to filter the velocity error profile.
• Minutes after launch, the missile is exo-atmospheric and on a Inertial Guidance System with an additional Star-Sighting system ( this combination is known as astro-inertial guidance ), which is used to correct small position and velocity errors that result from launch condition uncertainties due to errors in the submarine navigation system and errors that may have accumulated in the guidance system during the flight due to imperfect instrument calibration.
• A double cardan joint consists of two universal joints mounted back to back with a center yoke; the center yoke replaces the intermediate shaft . Provided that the angle between the input shaft and center yoke is equal to the angle between the center yoke and the output shaft, the second cardan joint will cancel the velocity errors introduced by the first cardan joint and the aligned double cardan joint will act as a CV joint.