Military manual · AFDD 2-1.9
AFDD 2-1.9, page 83
Targeting
Air Force Doctrine Document: Targeting
…The standard method
endorsed by National Geospatial-Intelligence Agency (NGA) is to express coordinate
accuracy as a “circular error” (CE) and vertical accuracy as a “linear error” (LE) to a 90
percent degree of certainty (CE…