Table 3.
Glossary of acronyms used in text.
| ATLAS | Advanced Topographic Laser Altimeter System |
| AMCS | Alignment Monitoring and Control System |
| ATL02 | ICESat-2 Science Unit Converted Telemetry Level 1B Data Product |
| ATL03 | ICESat-2 Global Geolocation Photon Level 2A Data Product |
| BSM | Beam Steering Mechanism |
| CCR | Corner Cube Retroreflector |
| CoM | Observatory Center of Mass |
| DOE | Diffractive Optical Element |
| ECF | Earth Centered, Fixed |
| ECI | Earth Centered, Inertial |
| EKF | Extended Kalman Filter |
| ESA | European Space Agency |
| GLAS | Geosciences Laser Altimeter System |
| ICESat | Ice Cloud and Land Elevation Satellite |
| ICESat-2 | Ice Cloud and Land Elevation Satellite - 2 |
| ICRF | International Celestial Reference Frame |
| IERS | International Earth Rotation and Reference System |
| IMSC | Instrument Mounted Spacecraft Components |
| IMU | Inertial Measurement Unit |
| ITRF | International Terrestrial Reference Frame |
| LRS | Laser Reference System |
| LTR | Lateral Transfer Retroreflector |
| MABEL | Multiple Altimeter Beam Experimental Lidar |
| MRF | Master Reference Frame |
| PAD | Precision Attitude Determination |
| PCE | Photon-Counting Electronics |
| PMT | Photomultiplier Tube |
| POD | Precision Orbit Determination |
| PPD | Precision Pointing Determination |
| PRF | Pulse Repetition Frequency |
| RGT | Reference Ground Track |
| SPD | Start Pulse Detector |
| SSIRU | Scalable Space Inertial Reference System |
| SST | Spacecraft Star Tracker |
| TAMS | Telescope Alignment and Monitoring System |
| TEP | Transmitter Echo Path |
| TOF | Time of Flight |
| USO | Ultra Stable Oscillator |
| WGS | World Geodetic System |
| WTOM/WTEM | Wavelength Tracking Optical / Electronics Module |
| ZRP | Zero Range Point |