The THAAD Launcher utilizes a _____________ to provide GPS information to operators and assists them in locating their assigned emplacement site

• A. DAGR
• B. GPS Receiver
• C. INS
• D. GLONASS Receiver

Answer: (A)

Understanding how a launcher knows exactly where it is and where to go requires a reliable source of precise position, velocity, and time data. The THAAD launcher relies on a secure, military-grade GPS data source to give operators accurate location information for the emplacement site and to keep timing aligned with fire-control data. The Defense Advanced GPS Receiver, or DAGR, is designed for this role. It’s a rugged, encrypted GPS receiver used by DoD personnel to obtain precise, protected GPS signals (including the P(Y) code) and reliable timing, which makes it ideal for determining exact coordinates of the emplacement and coordinating with the launcher’s systems.

A generic GPS receiver could provide similar information, but it wouldn’t carry the same security, reliability, or integration features required in a military context. A GLONASS receiver would access a different satellite navigation system, not GPS, so it wouldn’t meet the requirement to provide GPS information. An inertial navigation system (INS) doesn’t rely on satellites at all; it uses accelerometers and gyros, which drifts over time and doesn’t offer the same GPS position data.

So, the DAGR is the best fit because it delivers secure, accurate GPS data and timing that operators need to locate and position the THAAD emplacement effectively.