tlpipe.core.tl_array.AntennaArray

class tlpipe.core.tl_array.AntennaArray(*args, **kwargs)

Representation of an antenna array.

Attributes

date	Date
elev	Elevation above sea level in meters
elevation	Elevation above sea level in meters
epoch	Precession epoch
horizon	**The angle above (+) or below (-) the horizon at which an object should be considered at the moment of rising or setting as a float giving radians, or a string giving degrees* – minutes* – seconds
lat	**Latitude north of the Equator as a float giving radians, or a string giving degrees* – minutes* – seconds
lon	**Longitude east of Greenwich as a float giving radians, or a string giving degrees* – minutes* – seconds
long	**Longitude east of Greenwich as a float giving radians, or a string giving degrees* – minutes* – seconds
name
pressure	atmospheric pressure in millibar
temp	atmospheric temperature in degrees Celsius

__init__(*args, **kwargs)

Methods

bl2ij(bl)	Convert Miriad’s (i+1) << 8 | (j+1) baseline indexing scheme to
bl_indices([auto, cross])	Return bl indices for baselines in the array.
bm_response(i, j)	Return the beam response towards the cached source positions for baseline i,j with the specified polarization.
compute_pressure()	Set the atmospheric pressure for the current elevation.
disallow_circumpolar(declination)	Raise an exception if the given declination is circumpolar.
gen_phs(src, i, j[, mfreq, ionref, ...])	Return phasing that is multiplied to data to point to src.
gen_uvw(i, j[, src, w_only])	Compute uvw coordinates of baseline relative to provided RadioBody, or ‘z’ for zenith uvw coordinates.
get_active_pol()
get_afreqs()	Return array of frequencies that are active for simulation.
get_baseline(i, j[, src])	Return the baseline corresponding to i,j in various coordinate projections: src=’e’ for current equatorial, ‘z’ for zenith topocentric, ‘r’ for unrotated equatorial, or a RadioBody for projection toward that source.
get_freqs()	Return array of (all) frequencies.
get_jultime()	Get current time as a Julian date.
get_params([ant_prms])	Return all fitable parameters in a dictionary.
get_phs_offset(i, j)
ij2bl(i, j)	Convert baseline i,j (0 indexed) to Miriad’s (i+1) << 8 | (j+1) indexing scheme.
next_antitransit(body[, start])	Find the next passage of a body across the anti-meridian.
next_pass(body)	Return the next rising, culmination, and setting of a satellite.
next_rising(body[, start, use_center])	Move to the given body’s next rising, returning the date.
next_setting(body[, start, use_center])	Move to the given body’s next setting, returning the date.
next_transit(body[, start])	Find the next passage of a body across the meridian.
passband(i, j)
phs2src(data, src, i, j[, mfreq, ionref, ...])	Apply phasing to zenith-phased data to point to src.
previous_antitransit(body[, start])	Find the previous passage of a body across the anti-meridian.
previous_rising(body[, start, use_center])	Move to the given body’s previous rising, returning the date.
previous_setting(body[, start, use_center])	Move to the given body’s previous setting, returning the date.
previous_transit(body[, start])	Find the previous passage of a body across the meridian.
radec_of	compute the right ascension and declination of a point identified by its azimuth and altitude
refract(u_sf, v_sf[, mfreq, ionref])	Calibrate a frequency-dependent source offset by scaling measured offsets at a given frequency.
resolve_src(u, v[, srcshape])	Adjust amplitudes to reflect resolution effects for a uniform elliptical disk characterized by srcshape: srcshape = (a1,a2,th) where a1,a2 are angular sizes along the semimajor, semiminor axes, and th is the angle (in radians) of the semimajor axis from E.
select_chans([active_chans])	Select which channels are used in computations.
set_active_pol(pol)
set_ephemtime([t])	Set current time as derived from the ephem package.
set_jultime([t])	Set current time as a Julian date.
set_params(prms)	Set all parameters from a dictionary.
sidereal_time	compute the local sidereal time for this location and time
sim(i, j)	Simulate visibilites for the specified (i,j) baseline and polarization (set with AntennaArray.set_active_pol).
sim_cache(s_eqs[, jys, mfreqs, ionrefs, ...])	Cache intermediate computations given catalog information to speed simulation for multiple baselines.
unphs2src(data, src, i, j[, mfreq, ionref, ...])	Remove phasing from src-phased data to point to zenith.
update()