Initially Terra Nova will rely on standard portable radio systems but we will eventually want something better. We will also want a navigation system that doesn't rely on GPS.
LORAN.
Tried and true. Very reliable. The latest model (eLORAN) promises navigation accuracy of 8 meters. That's as good as GPS. Range of over 1,000 miles is about as good as a ground based radio navigation system gets. Three or 4 eLORAN transmitter stations would probably be adequate to cover the entire North American inland sea region. Receiver no larger then GPS receiver as the system is essentially similiar. You get position fix from 3 or 4 radio transmitters which are ground based instead of space based.
High performance has a price. You need a minimum of 3 stations for a position fix and 4 are better. Transmitters require 100kW to 4mW of power. Most antenna heights between 190 and 220 meters. To make this system work we would need 4 settlements with 5mW (or larger) hydro power stations more or less equally spaced around the inland sea.
Combined cell phone and navigation system.
Transmitter tower height of 50 to 200 feet.
Transmitter power up to 500 watts.
Range in flat terrain of 50 to 70km.
Range in hilly terrain can be as little as 5km.
A multitude of cellular systems are available. Position fix similiar to LORAN and GPS but much shorter range. Receiver gets a position fix from cell phone towers. This can be incorporated into a hand held phone allowing both communication and navigation.
Overwhelming popularity suggests that people love cell phones. Plus you get communications and navigation in a single package. However short range makes this system unsuitable for long range navigation. Aircraft (including UAVs) and ships would still require a longer range system.
Other systems are available. What are your recommendations?
Source: http://forums.terranovatv.net/terra-nova-fan-fiction/966-terra-nova-2012-communications-navigation/
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