Problems in Worldwide Standardization of the Units of Height Measurement.
NATIONAL BUREAU OF STANDARDS WASHINGTON D C
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The U. S. commitment ot a voluntary conversion to metric units raises changeover problems in the field of air traffic control and airspace management. This report begins by discussing current practice in altitude measurement and the rules for height maintenance now in effect worldwide. Four desirable features are given for an altitude measurement system, encompassing both the units of height measurement and the designation of cruising levels. Three alternative bases for the design of such a system are discussed and related to the desirable characteristics. Problems associated with each of the approaches are discussed and the many factors to be considered and the many interrelationships involved are examined. Author
- Air Navigation and Guidance