rime-api.rst

Radio Interferometer Measurement Equation

Functions used to compute the terms of the Radio Interferometer Measurement Equation (RIME). It describes the response of an interferometer to a sky model.

V_pq = G_p(∑_sE_psL_pK_psB_sK_qs^HL_q^HE_qs^H)G_q^H

where for antenna p and q, and source s:

• G_p represents direction-independent effects.
• E_ps represents direction-dependent effects.
• L_p represents the feed rotation.
• K_ps represents the phase delay term.
• B_s represents the brightness matrix.

The RIME is more formally described in the following four papers:

• I. A full-sky Jones formalism
• II. Calibration and direction-dependent effects
• III. Addressing direction-dependent effects in 21cm WSRT observations of 3C147
• IV. A generalized tensor formalism

Numpy

africanus.rime

predict_vis phase_delay parallactic_angles feed_rotation transform_sources beam_cube_dde zernike_dde wsclean_predict

predict_vis

phase_delay

parallactic_angles

feed_rotation

transform_sources

beam_cube_dde

zernike_dde

wsclean_predict

Cuda

africanus.rime.cuda

predict_vis phase_delay feed_rotation beam_cube_dde

predict_vis

phase_delay

feed_rotation

beam_cube_dde

Dask

africanus.rime.dask

predict_vis phase_delay parallactic_angles feed_rotation transform_sources beam_cube_dde zernike_dde wsclean_predict

predict_vis

phase_delay

parallactic_angles

feed_rotation

transform_sources

beam_cube_dde

zernike_dde

wsclean_predict