7 research outputs found
Introduction to GNSS
This chapter is a primer on global navigation satellite
systems (GNSSs). It assumes no prior knowledge
of the systems or how theywork. All of the key concepts
of satellite-based positioning, navigation,
and timing (PNT) are introduced with pointers to
subsequent chapters for further details. The chapter
begins with a history of PNT using satellites and
then introduces the concept of positioning using
measured ranges between a receiver and satellites.
The basic observation equations are then
described along with the associated error budgets.
Subsequently, the various GNSSs now in operation
and in development are briefly overviewed. The
chapter concludes with a discussion of the relevance
and importance of GNSS for science and
society at large