Title :
Errors in the pressure and Blanchard altitudes for a cross country flight
Author :
Li, Te-Chang ; Chueh, Victor
Author_Institution :
Northrop Grumman Navig. Syst., Woodland Hills, CA, USA
Abstract :
The pressure altitude obtained from a barometric altimeter is commonly used by an Inertial Navigation System (INS) as an altitude reference for the vertical channel. Pressure altitude is computed from the pressure based on a stationary atmospheric model for the standard day. Significant error (up to 10%) exists in the pressure altitude due to deviation of the actual atmosphere from the standard day. An alternate algorithm that possibly computes a more accurate altitude is the Blanchard algorithm.
Keywords :
Aircraft; Atmosphere; Atmospheric measurements; Atmospheric modeling; Global Positioning System; Inertial navigation; Land surface temperature; Pressure measurement; Sea measurements; Temperature measurement; Blanchard; altitude error; pressure;
Conference_Titel :
Position Location and Navigation Symposium (PLANS), 2010 IEEE/ION
Conference_Location :
Indian Wells, CA, USA
Print_ISBN :
978-1-4244-5036-7
Electronic_ISBN :
2153-358X
DOI :
10.1109/PLANS.2010.5507348
