A simulation that depicts all or part of the natural or manmade environment of a system; for example, a simulation of the radar equipment and other tracking devices that provide input to an aircraft tracking system. [IEEE]
Yimfaniso efanekisa yonke okanye inxalenye yokusingqongileyo yendalo okanye okwenziwe ngumntu, umzekelo, imfaniso yesixhobo serada kunye nezinye izixhobo zokulanda umkhondo ezinikezela ngegalelo kwinkqubo yokulandela umkhondo kwinqwelo-moya. [IEEE]