What type of signals does a DIFAR Sonobuoy process?

DIFAR (Directional Frequency Analysis and Recording) Sonobuoys are specialized underwater devices used primarily for anti-submarine warfare. They are designed to detect and analyze acoustic signals from underwater sources, such as submarines or other marine life.

The DIFAR Sonobuoy processes multifrequency acoustic data by using microphones, or hydrophones, that can pick up sounds across a range of frequencies. This capability allows for detailed analysis of the acoustic environment, making it possible to detect the directional bearing of sound sources. The data collected can be crucial for naval operations, as it helps in identifying the nature and location of potential underwater threats.

In contrast, active sonar pulse signals are emitted by a system to detect targets, rather than processed by a DIFAR Sonobuoy. Visual signals would not be relevant to the operational capabilities of a Sonobuoy, which is inherently an acoustic device. Likewise, GPS signals are used for navigation and positioning but do not pertain to the signal processing this type of Sonobuoy is designed for. Thus, multifrequency acoustic data is the most accurate description of the type of signals processed by a DIFAR Sonobuoy.