Added Altitude Pressure equation

physics/altitude_pressure.py

@@ -0,0 +1,52 @@
+"""
+Title : Calculate altitude using Pressure
+
+Description :
+    The below algorithm approximates the altitude using Barometric formula
+
+
+"""
+
+
+def get_altitude_at_pressure(pressure: float) -> float:
+    """
+    This method calculates the altitude from Pressure wrt to
+    Sea level pressure as reference .Pressure is in Pascals
+    https://en.wikipedia.org/wiki/Pressure_altitude
+    https://community.bosch-sensortec.com/t5/Question-and-answers/How-to-calculate-the-altitude-from-the-pressure-sensor-data/qaq-p/5702
+
+    H = 44330 * [1 - (P/p0)^(1/5.255) ]
+
+    Where :
+    H = altitude (m)
+    P = measured pressure
+    p0 = reference pressure at sea level 101325 Pa
+
+    Examples:
+    >>> get_altitude_at_pressure(pressure=100_000)
+    105.47836610778828
+    >>> get_altitude_at_pressure(pressure=101_325)
+    0.0
+    >>> get_altitude_at_pressure(pressure=80_000)
+    1855.873388064995
+    >>> get_altitude_at_pressure(pressure=201_325)
+    Traceback (most recent call last):
+      ...
+    ValueError: Value Higher than Pressure at Sea Level !
+    >>> get_altitude_at_pressure(pressure=-80_000)
+    Traceback (most recent call last):
+      ...
+    ValueError: Atmospheric Pressure can not be negative !
+    """
+
+    if pressure > 101325:
+        raise ValueError("Value Higher than Pressure at Sea Level !")
+    if pressure < 0:
+        raise ValueError("Atmospheric Pressure can not be negative !")
+    return 44_330 * (1 - (pressure / 101_325) ** (1 / 5.5255))
+
+
+if __name__ == "__main__":
+    import doctest
+
+    doctest.testmod()