ground_station_az_el.py

from spice_helpers import *

load_kernels()
spice.furnsh(['kernels/ndosl_140530_v01.tf',
              'kernels/ndosl_140530_v01.bsp'])
              
et           = spice.utc2et("2021 JUL 22 20:06:47") # get ephemeris time
station      = 'NDOSL_AG33'
station_ecef = spice.spkezr(tracker, et, 'ITRF93', 'NONE', 'EARTH')[0][0:3]

# is spacecraft behind the moon?
moon_occult  = spice.occult('-3700', 'POINT', ' ', 'MOON', 'ELLIPSOID', 'MOON_ME', 'LT', station_ecef, et)

# get NOVA-C position from perspective of ground station
novac_topo, lt = spice.spkcpo('-3700', et, station + '_TOPO', 'OBSERVER', 'LT', station_ecef, 'EARTH', 'ITRF93')
range, lon, el = spice.reclat(novac_topo[0:3])
az = -lon