poliastro2.worldview.earth.atmosphere.util

This script holds several utilities related to atmospheric computations.

Functions

geometric_to_geopotential(z, r0)

Converts from given geometric altitude to geopotential one.

geopotential_to_geometric(h, r0)

Converts from given geopotential altitude to geometric one.

gravity(z, g0, r0)

Relates Earth gravity field magnitude with the geometric height.

h_to_z(h, r0)

Converts from given geopotential altitude to geometric one.

z_to_h(z, r0)

Converts from given geometric altitude to geopotential one.
poliastro2.worldview.earth.atmosphere.util._check_altitude(alt, r0, geometric)
poliastro2.worldview.earth.atmosphere.util._get_index(x, x_levels)

Finds element in list and returns index.

Parameters:

  • x (float) – Element to be searched.

  • x_levels (list) – List for searching.

Returns:

i – Index for the value.

Return type:

int

poliastro2.worldview.earth.atmosphere.util.geometric_to_geopotential(z, r0)

Converts from given geometric altitude to geopotential one.

Parameters:

  • z (float) – Geometric altitude.

  • r0 (float) – Planet/Natural satellite radius.

Returns:

h – Geopotential altitude.

Return type:

float

poliastro2.worldview.earth.atmosphere.util.geopotential_to_geometric(h, r0)

Converts from given geopotential altitude to geometric one.

Parameters:

  • h (float) – Geopotential altitude.

  • r0 (float) – Planet/Natural satellite radius.

Returns:

z – Geometric altitude.

Return type:

float

poliastro2.worldview.earth.atmosphere.util.gravity(z, g0, r0)

Relates Earth gravity field magnitude with the geometric height.

Parameters:

  • z (float) – Geometric height.

  • g0 (float) – Gravity value at sea level.

  • r0 (float) – Planet/Natural satellite radius.

Returns:

g – Gravity value at given geometric altitude.

Return type:

float

poliastro2.worldview.earth.atmosphere.util.h_to_z(h, r0)

Converts from given geopotential altitude to geometric one.

Parameters:

  • h (float) – Geopotential altitude.

  • r0 (float) – Planet/Natural satellite radius.

Returns:

z – Geometric altitude.

Return type:

float

poliastro2.worldview.earth.atmosphere.util.z_to_h(z, r0)

Converts from given geometric altitude to geopotential one.

Parameters:

  • z (float) – Geometric altitude.

  • r0 (float) – Planet/Natural satellite radius.

Returns:

h – Geopotential altitude.

Return type:

float