Cotter used to use values that I measured using a 32-tile commissioning array calibrator scan, back in 2012, by stacking subbands and normalizing the resulting passband. We are currently (April 2014) planning to change this to exact values derived from the pfb coefficients by Alan Levine. These are his memo and his gains:
- Levine_bp.pdf: Alan Levine's memo about the band-passMEMO_CascadedFT_2012_05_25.pdf
- sim2n_totpwr_dat.txt: Alan Levine's bandpass gains used to create his relative power figure (dead link)
- MwaPfbProtoFilterCoeff2009_512x8.dat - Filter coefficients used to calculate the PFB gains
The first column in sim2n_totpwr_dat.txt is the fine frequency channel, and the third column is the bandpass gains in db. Cotter takes relative power, so a conversion must be used to get the bandpass gains in the right format.