ABSTRACT
Loran-C unattractive, and eventually become
obsolete. There were plans to decommission the
system due to the emerging use and attractions of
GNSS. In reality however, this situation is being
reversed.
Referring to Chapter 18, it is clear that any
GNSS is vulnerable to disruption; this can be
either a deliberate attempt to interfere with the
transmissions, satellite failure or because of
adverse atmospheric conditions. With increased
dependence on GNSS for aviation, marine,
vehicle and location-based services, the impact of
any disruption is significant. The solution to this
is to have an alternative navigation system
working alongside GNSS as a backup, e.g. VOR,
DME, inertial navigation (described elsewhere in
the book) or Loran.
