By Richard Fuller
We live in a world awash with RF signals, and they all contain some information
that can be exploited for navigation. Chapter 9 explores the topic of combining
GNSS with other RF systems for the navigation and tracking of vehicles, personnel,
and assets. Chapter 9 first discusses the basics of RF signal propagation and then
considers the motivation for combining various RF signals with GNSS.
The chapter then provides examples of currently available RF signals that can be exploited for
this application and presents filtering and sensor fusion algorithms for combining
RF signals with GNSS. The chapter then closes by describing the applications that
use the integration scheme discussed in this chapter.
A spreadsheet and MATLAB/Octave scripts are provided
that demonstrate basic RF antenna computations as well as Doppler and K-Nearest
Neighbor estimation techniques.