This Tapered Gridded Estimator (TGE) package can be used to estimate the angular power spectrum of the sky signal from radio interferometric visibilities. Details algorithm can be found in "https://arxiv.org/abs/1609.01732"
Required C packages: (1) fftw3 (2) NRCP (3) cfitsio (4) gsl
Installation: edit the path for the library files in makefile, then
make
Inputs: #BCHAN (start channel number)
#ECHAN (end channel number)
#Umax(lamda) (max baseline length in lambda unit)
#Umin(lamda) (min baseline length in lambda unit)
#Ant_Dia(in m) (Antenna diameter for primary beam calculation in m)
#Theta0=0.6FWHM(arcmin)
#f(taper)< 1 (set tapering window)
#seed (for random realizations)
#Nrea-Number of realizations
#flagLL (1=read LL polarization, 0=not read(-1.e8))
#fac (1=freq.scaling of the baselines, 0=no freq. scaling)
#Nbin(Number of bins)
#cutoff(some small number, 1.e-2 used)
After giving the input parameters:
sh run.sh