Which description best matches the GBU-54 (LJDAM)?

Which description best matches the GBU-54 (LJDAM)?

• A. 500 pound, GPS guided, laser updated
• B. 1000 pound, GPS guided
• C. 500 pound, laser guided
• D. 500 pound, GPS guided

Answer: (A)

The GBU-54 LJDAM combines GPS/INS guidance with semi-active laser guidance for terminal guidance. The GPS/INS handles navigation to the target area, while a laser designation in the terminal phase updates the bomb’s guidance to precisely hit the target when illuminated by a designator. This means it’s a 500-pound weapon that uses GPS guidance plus laser updating, giving it all-weather accuracy with laser-precise terminal guidance. The other descriptions don’t fit because they either get the weight wrong, describe laser-only guidance, or omit the laser-updated capability.

The GBU-54 LJDAM combines GPS/INS guidance with semi-active laser guidance for terminal guidance. The GPS/INS handles navigation to the target area, while a laser designation in the terminal phase updates the bomb’s guidance to precisely hit the target when illuminated by a designator. This means it’s a 500-pound weapon that uses GPS guidance plus laser updating, giving it all-weather accuracy with laser-precise terminal guidance. The other descriptions don’t fit because they either get the weight wrong, describe laser-only guidance, or omit the laser-updated capability.