The potential use of satellites to support civil aviation navigation has been a hot topic for many years. Until recently, however, costs and technological problems have made satellite navigation impractical and unavailable. There have also been considerable advances in the development of satellite navigation receivers. Digital avionics technology has made it possible to develop products with more capabilities and better performance at reasonable costs.
Many companies already offer GPS sensors and receivers.
Satellite navigation presents an opportunity for standardized civil aviation operations anywhere in the world using a common receiver. It can also improve safety and service flexibility, increase capacity and lower operating costs. It also offers the potential for new navigation, landing and surface surveillance services not supported by existing systems. In support of future navigation systems. The overall objectives.