High Altitude, Long Endurance, Unmanned Aircraft and Methods of Operation Thereof

Embodiments include one or more high altitude, long endurance (HALE) unmanned aircraft () capable of persistent station-keeping having one or more electromagnetic (IR/Visual/RF) sensor elements or suites () for purposes of survey and/or signal gathering. Embodiments include one or more high altitude, long endurance (HALE) unmanned aircraft () capable of persistent station-keeping having a directable laser (). Embodiments include a group of four or more high altitude, long endurance (HALE) unmanned aircraft (-) configured as GPS repeaters.