Which type of Link 16 network is based off GPS time corrected to UTC?

The System Time Reference Network (STRN) is the correct choice because it specifically utilizes GPS time corrected to Coordinated Universal Time (UTC) as a foundational element for its timing structure. STRN ensures that all participating units in a Link 16 network are synchronized in time, which is crucial for coordinated operations, message transmission, and receiving timely and accurate data. This synchronization minimizes discrepancies that could arise from variations in timekeeping among different platforms.

Choosing STRN is important because it supports the high-tempo nature of operations conducted via Link 16, where precise timing directly affects the integrity of tactical information exchange. While other networks like Time Division Multiple Access (TDMA) or Basic Time Synchronization Network (BTSN) may involve time synchronization, they do not specifically reference the use of GPS timing corrected to UTC, which is a distinctive characteristic of STRN. The Platform Timing Network (PTN) is also a method of synchronization but operates under different principles and does not focus on GPS time in the same manner as STRN.