lime_tbx.business.lime_algorithms.lime.elref module

This module calculates the extra-terrestrial lunar reflectance.

It exports the following functions:

  • calculate_elref - Calculates the expected extra-terrestrial lunar reflectance

for a given wavelength in nanometers. * calculate_elref_unc - Calculates the uncertainty for the reflectance calculations of empirical data points.

lime_tbx.business.lime_algorithms.lime.elref.calculate_elref(refl_coeffs: ReflectanceCoefficients, moon_data: MoonData) → ndarray[source]

The calculation of the reflectance of the Moon’s disk

Simulates a lunar observation for a wavelength for any observer/solar selenographic latitude and longitude. The reflectance is calculated in fractions of unity.

Parameters:

  • refl_coeffs (ReflectanceCoefficients) – ReflectanceCoefficients with the reflectances coefficients and uncertainties.

  • moon_data (MoonData) – Moon data needed to calculate Moon’s irradiance

Returns:

The extraterrestrial lunar irradiance calculated using the points’ coefficients present in the reflectance coefficient matrix.

Return type:

np.ndarray of np.ndarray of float

lime_tbx.business.lime_algorithms.lime.elref.calculate_elref_unc(cimel_coef: ReflectanceCoefficients, moon_data: MoonData) → Tuple[ndarray, ndarray][source]

Calculates the uncertainty for the reflectance calculations of empirical data points.

This uncertainties is for the empirical CIMEL data.

Parameters:

  • cimel_coef (ReflectanceCoefficients) – ReflectanceCoefficients with the CIMEL coefficients and uncertainties.

  • moon_data (MoonData) – Moon data needed to calculate Moon’s irradiance

Returns:

  • uncs (np.ndarray of float) – The uncertainties calculated

  • corr (np.ndarray of float) – The error correlation matrix calculated