SENTINEL1 = 'SENTINEL-1'
SENTINEL1A = 'Sentinel-1A'
SENTINEL1B = 'Sentinel-1B'
SIRC = 'SIR-C'
ALOS = 'ALOS'
ERS = 'ERS'
ERS1 = 'ERS-1'
ERS2 = 'ERS-2'
JERS = 'JERS-1'
RADARSAT = 'RADARSAT-1'
AIRSAR = 'AIRSAR'
SEASAT = 'SEASAT 1'
SMAP = 'SMAP'
UAVSAR = 'UAVSAR'
NISAR = 'NISAR'
