Performance of ICESat‐2 Precision Pointing Determination
Abstract Global elevations are critical to understanding the Earth's dynamic processes and changing climate. These measurements are best acquired from a space‐based vantage point and are most accurate using laser altimetry technology. However, the accuracy associated with the elevation retrieva...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
American Geophysical Union (AGU)
2021-04-01
|
| Series: | Earth and Space Science |
| Subjects: | |
| Online Access: | https://doi.org/10.1029/2020EA001478 |
| _version_ | 1818457214618173440 |
|---|---|
| author | Sungkoo Bae Benjamin Helgeson Michael James Lori Magruder Jonathan Sipps Scott Luthcke Taylor Thomas |
| author_facet | Sungkoo Bae Benjamin Helgeson Michael James Lori Magruder Jonathan Sipps Scott Luthcke Taylor Thomas |
| author_sort | Sungkoo Bae |
| collection | DOAJ |
| description | Abstract Global elevations are critical to understanding the Earth's dynamic processes and changing climate. These measurements are best acquired from a space‐based vantage point and are most accurate using laser altimetry technology. However, the accuracy associated with the elevation retrievals from laser altimetry relies heavily on the ability to precisely determine the pointing angle of the laser beams from the satellite to the illuminated spot on the surface. The Ice, Cloud, and land Elevation Satellite 2 (ICESat‐2) has a system consisting of instruments that support the determination of the laser pointing direction through a process called Precision Pointing Determination (PPD). In this paper, we describe the PPD conceptual implementation, instrument details, data processing approach, calibration/validation techniques, and performance assessment. We show that the PPD has successfully achieved the allocated accuracy goal essential to meeting the ICESat‐2 geolocation mission requirement. |
| first_indexed | 2024-12-14T22:39:01Z |
| format | Article |
| id | doaj.art-69c76ef036f345d09c7c95f54fc4eab0 |
| institution | Directory Open Access Journal |
| issn | 2333-5084 |
| language | English |
| last_indexed | 2024-12-14T22:39:01Z |
| publishDate | 2021-04-01 |
| publisher | American Geophysical Union (AGU) |
| record_format | Article |
| series | Earth and Space Science |
| spelling | doaj.art-69c76ef036f345d09c7c95f54fc4eab02022-12-21T22:45:02ZengAmerican Geophysical Union (AGU)Earth and Space Science2333-50842021-04-0184n/an/a10.1029/2020EA001478Performance of ICESat‐2 Precision Pointing DeterminationSungkoo Bae0Benjamin Helgeson1Michael James2Lori Magruder3Jonathan Sipps4Scott Luthcke5Taylor Thomas6Applied Research Laboratories the University of Texas at Austin Austin TX USAApplied Research Laboratories the University of Texas at Austin Austin TX USAApplied Research Laboratories the University of Texas at Austin Austin TX USAApplied Research Laboratories the University of Texas at Austin Austin TX USAApplied Research Laboratories the University of Texas at Austin Austin TX USASpace Geodesy Laboratory NASA Goddard Space Flight Center Greenbelt MD USASpace Geodesy Laboratory NASA Goddard Space Flight Center Greenbelt MD USAAbstract Global elevations are critical to understanding the Earth's dynamic processes and changing climate. These measurements are best acquired from a space‐based vantage point and are most accurate using laser altimetry technology. However, the accuracy associated with the elevation retrievals from laser altimetry relies heavily on the ability to precisely determine the pointing angle of the laser beams from the satellite to the illuminated spot on the surface. The Ice, Cloud, and land Elevation Satellite 2 (ICESat‐2) has a system consisting of instruments that support the determination of the laser pointing direction through a process called Precision Pointing Determination (PPD). In this paper, we describe the PPD conceptual implementation, instrument details, data processing approach, calibration/validation techniques, and performance assessment. We show that the PPD has successfully achieved the allocated accuracy goal essential to meeting the ICESat‐2 geolocation mission requirement.https://doi.org/10.1029/2020EA001478ATLAScalibration/validationgeolocationICESat‐2laser pointingspacecraft attitude |
| spellingShingle | Sungkoo Bae Benjamin Helgeson Michael James Lori Magruder Jonathan Sipps Scott Luthcke Taylor Thomas Performance of ICESat‐2 Precision Pointing Determination Earth and Space Science ATLAS calibration/validation geolocation ICESat‐2 laser pointing spacecraft attitude |
| title | Performance of ICESat‐2 Precision Pointing Determination |
| title_full | Performance of ICESat‐2 Precision Pointing Determination |
| title_fullStr | Performance of ICESat‐2 Precision Pointing Determination |
| title_full_unstemmed | Performance of ICESat‐2 Precision Pointing Determination |
| title_short | Performance of ICESat‐2 Precision Pointing Determination |
| title_sort | performance of icesat 2 precision pointing determination |
| topic | ATLAS calibration/validation geolocation ICESat‐2 laser pointing spacecraft attitude |
| url | https://doi.org/10.1029/2020EA001478 |
| work_keys_str_mv | AT sungkoobae performanceoficesat2precisionpointingdetermination AT benjaminhelgeson performanceoficesat2precisionpointingdetermination AT michaeljames performanceoficesat2precisionpointingdetermination AT lorimagruder performanceoficesat2precisionpointingdetermination AT jonathansipps performanceoficesat2precisionpointingdetermination AT scottluthcke performanceoficesat2precisionpointingdetermination AT taylorthomas performanceoficesat2precisionpointingdetermination |