The WODEN visibility simulator¶
WODEN is C / CUDA code designed to be able to simulate low-frequency radio interferometric data. It is written to be simplistic and fast to allow all-sky simulations. Although WODEN was primarily written to simulate Murchinson Widefield Array (MWA, Tingay et al. 2013) visibilities, it is becoming less instrument-specific as time goes on. WODEN outputs uvfits files.
The unique part of WODEN is that it can simulate shapelet model sources (along with point and Gaussian) that are compatible with the RTS (Mitchell et al. 2008). These models are generated with SHApelet Modelling For Interferometers (SHAMFI), specified with the --woden_srclist option. It also includes a script to convert a multi-scale CLEAN component list out of WSClean into a WODEN-style srclist (when running WSClean use the -save-source-list option). WODEN can also produce visibilities that can be fed directly into the RTS to allow testing of calibration and modelling methodologies.