| Acronym | Meaning |
| DIFAR | DIrectional Frequency Analysis And Recording |
| NUWC | U.S. Naval Undersea Warfare Center |
| SMD | Surface Mount Device |
| ELT | Emergency Locator Transmitter |
| BTN | Bhutan (ISO 3166 Trigram) - Bhutanese Ngultrum (ISO 4217 Currency Code) |
| ALSP | Aggregate Level Simulation Protocol |
| RACON | RAdar BeaCON |
| NESP | NSA/CSS Enterprise Standards Program |
| TA | Tamil Language (ISO 639-1 Code) |
| JV | Javanese Language (ISO 639-1 Code) |