Instrument: Sonobuoy

Dataset: 
sonobuoy_whale
Instrument: 
Sonobuoy
Instrument Short Name: Sonobuoy
Instrument Description:

A Sonobuoy is a relatively small (typically 4 inches, or 124 mm, in diameter and 36 inches, or 910 mm, long) expendable sonar system that is dropped/ejected from aircraft or ships conducting anti-submarine warfare or underwater acoustic research.

PI supplied instrument name: Sonobuoy
Dataset-specific description

53B denotes DIFAR (directional fixing and ranging) sonobuoy, having a frequency range of 10 Hz to 2.5 kHz.
57B denotes an omnidirectional sonobuoy with a frequency range up to 40 kHz.