What is a Pseudolite? A pseudolite (or pseudo-satellite) is any
device that performs a specific task that would otherwise
require a satellite. So, for example, a dedicated transmitter
might be deployed to extend the reach of a GNSS to areas where
the satellite signals are either blocked or jammed, and there
has been considerable success with deployment of pseudolites to
extend GPS coverage indoors. These are relatively simple devices
that only transmit the coarse acquisition code. Pseudolites are
also used to simulate future GNSS satellites in a real-world
environment as well as for robotic guidance in space
exploration. A single-channel GNSS simulator (or signal
generator) can be used as a pseudolite, particularly in the
research and development arena. However, care needs to be taken
when operating powerful transmitters within GNSS bands. Clearly,
highly sensitive GNSS receivers designed to capture minute
signals from distant satellites will not react well to high-
power transmissions on their receiving frequ