What does IRAT stand for?

Infrared Angle Track (ACAE)

Institut de Recherche Appliquee sur le Travail - Canada

Institut de Recherches Agronomiques Tropicales et des Cultures Vivrieres - Food and agricultural research foundation supported by France and several African states

Institut de Recherches en Agronomie Tropicale - Institute of Research in Tropical Agronomy (GIS)

Iron Eagle Aerobatic Team - Air show performer (ASPC)