| Acronym | Meaning |
| A | Ampere |
| ACS | Attitude Control System |
| ADAC, AD&C |
Attitude Determination and Control System |
| Ahr | Ampere-hours |
| Alt | altitude |
| AOS | Advanced Orbiting System Acquisition of Signal |
| APID | Application Process Identification |
| ARTSN | Automated Real-Time Spacecraft Navigation System |
| ASIST | Advanced System for Integration and Spacecraft Testing |
| AST | Autonomous Star Tracker |
| ATS | Absolute Time Sequence |
| Acronym | Meaning |
| BCH | Bose-Chaudhuri-Hocquenghem Binary Coded Hexadecimal |
| BER | Bit Error Rate |
| BP | Browse Product |
| bps | bits per second |
| BOA | Beginning of Activity |
| BOT | Beginning of Track |
| BPSK | binary phase shift keying |