Algorithm used to generate antenna positions values in hera127.py

[Kourosh76]

I tried to understand the algorithm used to generate the antpos variable data in the hera127.py, but I couldn't figure out what each of the nside, L, dL, cen_x, cen_y and cen_z parameters used in this algorithm are and how it works?!

On the other hand, it is said in this link that pyuvdata objects can be used to receive this data. In the pyuvdata documentation, it is written that the antenna positions data is in the hera_ant_pos.csv file, but the number of data in this file is 350, while the number of data generated using the algorithm used in the hera127.py is 127!!

Please give me an explanation about this algorithm or introduce a reference.