Systems and methods for improved accuracy in determining altitude from pressure
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United States of America Patent
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Nov 28, 2017
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app pub date -
Feb 10, 2015
filing date -
Feb 14, 2014
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Abstract
Described are methods, systems, means and machine-readable media embodying program instructions for considering water molecules and other mixtures in air when estimating an altitude of a pressure sensor. In at least one implementation, a measurement of humidity is used to compute a gas constant value, and the computed gas constant value is used to estimate an altitude of a pressure sensor. In another embodiment, the measurement of humidity is compared to a threshold condition related to humidity. Depending on the results of the comparison, the measurement of humidity is used to determine the altitude of the pressure sensor.
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