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via baswell; Not that it will help our delusional friend BingBoy, but to put things into perspective:
A post that has little to do with what i've been posting... Hmmm... seems 'poster'
baswell hasn't been reading all the other threads on this subject..
Fer some 'perspective' some comments via ausairpower -
"...The US FAA is currently looking at the implementation of the Wide Area Augmentation System (WAAS), which will see DGPS error signals broadcast over the continental US from geostationary INMARSAT satellites. Aircraft with suitable receivers will thus be able to exploit both wide area and local DGPS schemes to get the best possible positional accuracy.
The USAF have been decidedly unhappy about this development, as they invested US$21 billion into developing and deploying the NavStar constellation, and expend US$600 million yearly to run it, only to have what they perceive to be civilian freeloaders exploit their system and defeat the built in safeguards against hostile use. As things stand, the deployment of the FAA's WAAS will allow anybody with a suitable commercial DGPS receiver to achieve blind bombing accuracies well in excess of what is provided by basic PPS P-code whilst in US airspace.
This is a nightmare for the USAF, responsible for defending US airspace, as the deployment of DGPS will very quickly lead to a virtual complete dependency of the civilian ATC and traffic management system upon DGPS. The option of shutting down the WAAS system, as well as local DGPS beacons would become extremely difficult, even in wartime, as the civilian infrastructure ever cost conscious will have dismantled much of its existing base of older navaids such as VOR/DMEs and NDBs. Even should much of the VOR/DME/NDB infrastructure remain in place and functional, the next issue to contend with is civilian pilot currency. The ease of using GPS/DGPS will see a steady erosion of the skills base and currency in the usage of conventional navaids. Thus shutting down the high accuracy component of the civilian GPS infrastructure would introduce serious operational hazards..."
GPS Guided Weapons - Parts I-V
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