Support polarization data and Stokes I gridding
caseyjlaw opened this issue · comments
Current CPU code will assume two circular polarizations and will grid them to the same uv cell. The GPUArrayComplex class needs a polarization axis and gridding would need to iterate over the polarization axis. Probably fine to assume two, orthogonal pols.
If the RR and LL pols are always going to be gridded into the same cell, I think it should be equivalent to just sum along the poln axis prior to gridding, right? I guess I was assuming it would make more sense to do this prior to sending the data to the GPU (mainly to reduce GPU memory usage).
Good point. I'm using this now and things seem to make sense.