dickfoster
Elite Member
I do use a GPS unit but I'm waiting on an economical, high quality civilian "inertial" system...they do not rely on any outside source of data...i.e., satellites, RF transmitters etc.,etc... they are entirely self contained systems...
Used to love LORAN and thought it was a valid redundant system seeing as it was land based...not sure "inertial" system technology will be cost effective for the average consumer for a while though...
Inertial navigation is OK for nukes since you don't have to rely on external navigational aids or signals that are easy to jam but you do have to know where you're starting from and where you're going accurately. As a former and original member of the Defence Mapping Agency and Geodetic Survey Squadron many of our missions were to accurately locate our nuclear missiles and the surrounding gravity fields and to accurately locate picture points for things like B1s and B2s to calibrate their Inertial systems while enroute. Then again you also have to know where your target is too or you're not going to be hitting much of anything, no matter how big your nuke is. It's easy for inertial systems to have errors creep in and accumulate over the course of travel. The price and complexity of an inertial system increases exponentially the more accuracy you need and the further you're going between fixes.