hera_sim.sigchain

Models of signal-chain systematics.

This module defines several models of systematics that arise in the signal chain, for example bandpass gains, reflections and cross-talk.

Functions

apply_gains(vis, gains, bl)	Apply antenna-based gains to a visibility.
gen_bandpass(freqs, ants[, gain_spread, ...])
gen_delay_phs(freqs, ants[, dly_rng, rng])
gen_reflection_coefficient(freqs, amp, dly, phs)	Randomly generate reflection coefficients.
vary_gains_in_time(gains, times[, freqs, ...])	Vary gain amplitudes, phases, or delays in time.

Classes

Bandpass([gain_spread, dly_rng, bp_poly, ...])	Generate bandpass gains.
CrossCouplingCrosstalk([amp, dly, phs, ...])	Generate cross-coupling xtalk.
CrossCouplingSpectrum([n_copies, amp_range, ...])	Generate a cross-coupling spectrum.
Crosstalk(**kwargs)	Base class for cross-talk models.
Gain(**kwargs)	Base class for systematic gains.
MutualCoupling([uvbeam, reflection, ...])	Simulate mutual coupling according to Josaitis+ 2022.
OverAirCrossCoupling([emitter_pos, ...])	Crosstalk model based on the mechanism described in HERA Memo 104.
ReflectionSpectrum([n_copies, amp_range, ...])	Generate many reflections between a range of delays.
Reflections([amp, dly, phs, conj, ...])	Produce multiplicative reflection gains.
WhiteNoiseCrosstalk([amplitude, rng])	Generate cross-talk that is simply white noise.