Which munition provides GPS/INS guidance in a 1000-pound JDAM configuration?

• A. GBU-32
• B. GBU-31
• C. GBU-12
• D. MK-83

Answer: (A)

GPS/INS guidance is the navigation method used by JDAM-enabled bombs, turning a standard unguided weapon into an all-weather, precision munition by autonomously guiding it to a set coordinate using satellite updates and inertial measurements. In the 1000-pound class, the JDAM variant is the GBU-32, which combines the Mk-83 adaptation with the JDAM guidance kit to deliver GPS/INS guidance. The other options don’t fit this specific weight-and-guidance pairing: the 2000-pound JDAM is the GBU-31, the 500-pound Paveway II is laser-guided, and the Mk-83 by itself is an unguided 1,000-pound general-purpose bomb.