Stokes Vector¶

class
radtran.sasktran.
StokesVector
(stokes, basis)¶ Defines a stokes vector with its associated basis.
Parameters: stokes : numpy array shape (4,)
The stokes vector [I, Q, U, V]
basis : numpy array shape (3,3)
Coordinate basis the stokes vector is defined in. basis[0, :] is the propagation direction, basis[1, :] is the theta direction, and basis[2, :] is the phi direction. Directions are specified in ECEF coordinates. The basis must be constructed such that basis[1, :] cross basis[2, :] is equal to basis[0, :]
Raises: ValueError if the basis is not correctly constructed
Methods
I
Q
U
V
phi_direction
propagation_direction
theta_direction
to_new_basis

phi_direction
()¶ Returns the phi direction of the current basis in ECEF coordinates

propagation_direction
()¶ Returns the propagation direction of the current basis in ECEF coordinates

theta_direction
()¶ Returns the theta direction of the current basis in ECEF coordinates

to_new_basis
(new_basis)¶ Converts the stokes vector to a new basis. A rotation matrix between the new basis and old basis is constructed and applied to the stokes vector. Note that this process overrides the old basis
Parameters: new_basis : numpy array shape (3,3)
The new basis. See the class constructor documentation for the format
