SKA1 LOW single station simulation (continued)

Inclusion of a more realistic model of LOW station receive path behaviour within SKA Low visibility simulations is a valuable capability for SKA simulation tools.

This is part of work towards reducing the risk of LOW station calibration and the error model needed for this to answer questions such as:

• Can we down select on the calibration method for LOW single station calibration?
• Can we use average EEPs for calibration?
• Can we calibration using a single or reduced set of frequencies and apply to others?
• Do we need to use holography for station calibration?

• Matlab code is made available in SKA Gitlab (preferred or TBD alternative
• Continue discussion with the aim to
  • validate the model and define a realistic set of model parameters, resulting in agreement on a set of parameters to work with to address the questions in the benefit hypothesis
  • define specific simulations to address questions as listed in the benefit hypothesis
• An interface is defined and implemented to incorporate the simulated gains in OSKAR simulations
• Validation of the previous point by simulating intra-station visibilities with OSKAR assuming identical EEPs and a single source in the FoV and retrieving the injected gains from these visibilities by a standard station calibration routine.
  • Scripts / outputs made available according to outcome of SP-1183

• Matlab code (AST-194): https://gitlab.com/ska-telescope/ska-low-simulations/-/tree/master/matlab

• Interface demostrated with OSKAR: see SIM-570, SIM-571, SIM-592, SIM-604, & SIM-619 (https://confluence.skatelescope.org/display/SE/LOW+single+station+simulation+support)

• Validation of intra-station visibilities: see AST-196

• demonstrated during System Demo 8.5 on November 11, 2020.