This book describes the inertial technology used for guidance, control, and navigation, discussing in detail the principles, operation, and design of inertial sensors - gyroscopes and accelerometers - as well as the advantages and disadvantages of particular systems. An engineer with long practical experience in the field, the author elucidates the most recent developments in inertial guidance. Among these are fiber-optic gyroscopes, solid-state accelerometers, and the Global Positioning System. The book should be of interest to researchers and practicing engineers involved in systems engineering, aeronautics, space research, and navigation on land and on sea.