edges.sim.receivercal

Module with routines for simulating calibration datasets.

edges.sim.receivercal.get_data_from_calobs(srcs: Sequence[str], calobs, tns: Model | None = None, sim: bool = False, loads: dict | None = None) → ndarray[source]

Generate input data to fit from a calibration observation.

edges.sim.receivercal.simulate_q(*, load_s11: ndarray, receiver_s11: ndarray, load_temp: Annotated[Quantity, PhysicalType('temperature')], t_sca: ndarray, t_off: ndarray, t_unc: ndarray, t_cos: ndarray, t_sin: ndarray) → ndarray[source]

Simulate the observed 3-position switch ratio data, Q.

Parameters:

  • load_s11 (np.ndarray) – The S11 of the input load (antenna, or calibration source) as a function of frequency.

  • receiver_s11 (np.ndarray) – The S11 of the internal LNA.

  • load_temp – The (calibrated) temperature of the input load.

  • t_sca – The scaling temperature (i.e. ~T_load+ns)

  • t_off (np.ndarray) – The offset temperature (i.e. ~T_load)

  • t_unc (np.ndarray) – The noise-wave parameter T_uncorrelated

  • t_cos (np.ndarray) – The noise-wave parameter T_cos

  • t_sin (np.ndarray) – The noise-wave parameter T_sin

  • t_load (float, optional) – The fiducial internal load temperature, by default 300.0

  • t_load_ns (float, optional) – The internal load + noise source temperature, by default 400.0

Returns:

q – The simulated 3-position switch ratio data.

edges.sim.receivercal.simulate_q_from_calibrator(load: InputSource, calibrator: Calibrator, scale_model: Callable | None = None) → ndarray[source]

Simulate the observed 3-position switch ratio, Q, from noise-wave solutions.

Parameters:

  • calibrator – The calibration observation that contains the solutions.

  • load (str) – The load to simulate.

Returns:

np.ndarray – The 3-position switch values.

edges.sim.receivercal.simulate_qant_from_calibrator(calibrator: Calibrator, ant_s11: ndarray, ant_temp: ndarray, scale_model: Callable | None = None, loss: ndarray | float = 1, t_amb: float = 296, bm_corr: float | ndarray = 1) → ndarray[source]

Simulate antenna Q from a calibration observation.

Parameters:

  • calobs (CalibrationObservation) – The calibration observation that contains the solutions.

  • ant_s11 – The S11 of the antenna.

  • ant_temp – The true temperature of the beam-weighted sky.

Returns:

np.ndarray – The simulated 3-position switch ratio, Q.