Source: TH
Context: India and the U.S. have announced a strategic partnership to co-produce sonobuoys, niche undersea instruments essential for tracking submarines and bolstering undersea domain awareness (UDA).
About Sonobuoys:
- What they are:
- Sonobuoys are expendable sonar buoys used for anti-submarine warfare and underwater acoustic research.
- Typically, small (13 cm in diameter and 91 cm long), they combine above-surface transmitters and underwater hydrophone sensors.
- Working Principles:
- Deployment: Dropped from aircraft or ships, they activate upon water impact.
- Surface Float: Inflatable floats with radio transmitters remain on the water’s surface for communication.
- Sensors: Hydrophones descend to a selected depth, capturing underwater acoustic signals.
- Communication: Transmit acoustic data via Very High Frequency (VHF) and Ultra High Frequency (UHF) radios to operators on aircraft or ships.
- Features:
- Acoustic Versatility: Effective in tracking submarines by detecting underwater sounds.
- Interoperability: Compatible with aircraft like P-8, MH-60R, and MQ-9B across Indian and U.S. Navies.
- Customizability: Adjustable depth and sensitivity based on environmental conditions.
- Real-time Data Relay: Ensures seamless communication with operators for immediate analysis.
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