Impact of algorithms on low cost NAVSTAR/GPS user terminal design tradeoff studies

This paper will describe some of the design tradeoff studies being performed at the Naval Electronics Laboratory Center in support of the development of technologies for a low cost NAVSTAR/GPS user terminal. Particular emphasis is being placed on achieving higher accuracy in position and velocity without the aid of inertial navigation systems. The role of estimation theory in the design and analysis of navigation algorithms is emphasized via the covariance and simulation analyses to support hardware-software tradeoffs.