Non-line-of-sight (NLOS) propagation is one of the
major problems that cause errors in localization systems. There
exist many algorithms to reduce NLOS caused errors. Most of
these algorithms require a priori information about the NLOS
links, which limits their application. Least median of squares
(LMedS) method is an exception and...
Indoor positioning systems can be used for many applications such as indoor navigation,emergence response, asset monitoring, and shopper assistance. Due to the weak received signal and multipath reflection, the global positioning system (GPS) generally does not work in indoor environments. There are a variety of radio frequency (RF) signals and...
Estimation accuracy and computational complexity
are two major areas of consideration for localization system
design. For time-of-arrival based systems, the 1st-order method
of moments (MOM) least-square (LS) estimator is simple to
implement, but its performance is much worse than that of
some computationally more complex estimators such as the
MOM...