G05D1/00
Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
G05D1/00
Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
G05D1/02
Control of position or course in two dimensions
G05D1/02
Control of position or course in two dimensions