The Institute of Navigation (ION) is a not-for-profit professional organization dedicated to advancing Positioning, Navigation and Timing (PNT). ION’s international membership is drawn from many sources including professional navigators, engineers, physicists, mathematicians, astronomers, cartographers, photogrametrists, meteorologists, educators, geodesists, surveyors, general aviation and airline pilots, mariners and anyone interested in position-determining systems. Corporate members include corporations, civil and military government agencies, private scientific and technical institutions, universities and training academies, and consulting firms. Manassas, Virginia

Its objectives are to unite in one body those who are concerned with or who are interested in navigation and to further its development. To further the development of navigation in every sphere; And to increase public awareness of the art and science of navigation. London, England.