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* Added Altitude Pressure equation * [pre-commit.ci] auto fixes from pre-commit.com hooks for more information, see https://pre-commit.ci * Removed trailing whitespaces * Removed pylint * Fix lru_cache_pythonic.py * Fixed spellings * Fix again lru_cache_pythonic.py * Update .vscode/settings.json Co-authored-by: Christian Clauss <cclauss@me.com> * Third fix lru_cache_pythonic.py * Update .vscode/settings.json Co-authored-by: Christian Clauss <cclauss@me.com> * 4th fix lru_cache_pythonic.py * Update physics/altitude_pressure.py Co-authored-by: Christian Clauss <cclauss@me.com> * lru_cache_pythonic.py: def get(self, key: Any, /) -> Any | None: * Delete lru_cache_pythonic.py * Added positive and negative pressure test cases * [pre-commit.ci] auto fixes from pre-commit.com hooks for more information, see https://pre-commit.ci --------- Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com> Co-authored-by: Christian Clauss <cclauss@me.com>
53 lines
1.5 KiB
Python
53 lines
1.5 KiB
Python
"""
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Title : Calculate altitude using Pressure
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Description :
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The below algorithm approximates the altitude using Barometric formula
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"""
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def get_altitude_at_pressure(pressure: float) -> float:
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"""
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This method calculates the altitude from Pressure wrt to
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Sea level pressure as reference .Pressure is in Pascals
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https://en.wikipedia.org/wiki/Pressure_altitude
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https://community.bosch-sensortec.com/t5/Question-and-answers/How-to-calculate-the-altitude-from-the-pressure-sensor-data/qaq-p/5702
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H = 44330 * [1 - (P/p0)^(1/5.255) ]
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Where :
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H = altitude (m)
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P = measured pressure
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p0 = reference pressure at sea level 101325 Pa
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Examples:
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>>> get_altitude_at_pressure(pressure=100_000)
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105.47836610778828
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>>> get_altitude_at_pressure(pressure=101_325)
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0.0
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>>> get_altitude_at_pressure(pressure=80_000)
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1855.873388064995
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>>> get_altitude_at_pressure(pressure=201_325)
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Traceback (most recent call last):
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...
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ValueError: Value Higher than Pressure at Sea Level !
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>>> get_altitude_at_pressure(pressure=-80_000)
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Traceback (most recent call last):
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...
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ValueError: Atmospheric Pressure can not be negative !
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"""
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if pressure > 101325:
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raise ValueError("Value Higher than Pressure at Sea Level !")
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if pressure < 0:
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raise ValueError("Atmospheric Pressure can not be negative !")
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return 44_330 * (1 - (pressure / 101_325) ** (1 / 5.5255))
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if __name__ == "__main__":
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import doctest
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doctest.testmod()
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