What is the function of LOFAR sonobuoys?

LOFAR (Low Frequency Analysis and Recording) sonobuoys are specifically designed for passive acoustic monitoring, primarily to detect sounds from submarines. The unique capability of these sonobuoys lies in their ability to pick up low-frequency sounds generated by submarines, including the noise from their machinery or any underwater activity.

This passive listening helps in tracking and identifying submarine movements without emitting any signals that would reveal the position of the detecting unit. By comparing the sounds captured by multiple LOFAR sonobuoys, analysts can triangulate and determine the location of the submarine effectively. This capability is crucial for maritime surveillance and naval warfare, allowing naval forces to maintain a tactical advantage while minimizing the risk of detection by adversaries.

The other options do not reflect the primary purpose of LOFAR sonobuoys, as they do not engage in active tracking, recording aircraft flight paths, or enhancing radar capabilities. Each of these tasks is associated with different systems or technologies entirely.