What guidance does JDAM use?

What guidance does JDAM use?

• A. GPS/INS
• B. GLONASS
• C. Laser
• D. Radar

Answer: (A)

JDAM guides the bomb using GPS combined with an inertial navigation system. The GPS receiver provides precise position and velocity information from satellites, guiding the round toward the programmed coordinates. The inertial navigation system (accelerometers and gyros) tracks motion and maintains a navigation solution when GPS signals are weak or unavailable, ensuring continued guidance. The two systems work together so GPS updates correct any drift in the INS, delivering accurate, all-weather targeting. The other options don’t fit because GLONASS is a different satellite system and laser or radar guidance would require different sensing or seekers, which JDAM’s kit does not rely on.

JDAM guides the bomb using GPS combined with an inertial navigation system. The GPS receiver provides precise position and velocity information from satellites, guiding the round toward the programmed coordinates. The inertial navigation system (accelerometers and gyros) tracks motion and maintains a navigation solution when GPS signals are weak or unavailable, ensuring continued guidance. The two systems work together so GPS updates correct any drift in the INS, delivering accurate, all-weather targeting. The other options don’t fit because GLONASS is a different satellite system and laser or radar guidance would require different sensing or seekers, which JDAM’s kit does not rely on.