GLSDB uses the older SDB (GBU-39B) with GPS/INS guidance alone, whereas the newer SDB 2 (GBU53/B StormBreaker) has GPS/INS with course correction updates via Link 16, plus 3 modes of target acquisition: MM-wave radar, IR homing via uncooled IR imager and semi-active laser homing.
They are using them wrong.. it’s not a single weapon it’s a concept to build a family of weapons on.. GLAMRAAM, GLHARM, GLPAVEWAY, GLHAMMER, GLROCKEYE, GLSIDEWINDERX, GLJADAM, GLHARPOON.. the options are unlimited