NASA Abbreviations and Acronyms

1. OAT
   Overall Test
2. OATS
   Orbit and Attitude Trackine System
3. OB
   Operational Base
4. OB
   Optical Bench
5. OB
   Outboard
6. OB
   Onboard
7. OBASS
   Optical Bench Alignment Support Structure
8. OBC
   On-Board Computer
9. OBCO
   Onboard Checkout (instrumentation)
10. OBCS
    Onboard Checkout Subsystem
11. OBCTE
    On-board Computer Test Equipment
12. OBD
    Overboard
13. OBDH
    On-Board Data Handling
14. OBDHTE
    On-Board Data Handling Test Equipment
15. OBDI
    On-Board Decoder Interface
16. OBDS
    On-Board Decoder Simulator
17. OBE
    Optical Bench Enclosure
18. OBETC
    Optical Bench Enclosure Thermal Control
19. OBJ
    Objective
20. OBP
    On-Board Processor

Last updated: May 6, 2025 — Total entries: 14,020