Post-flight Evaluation of Lidar-based Digital Terrain Models for OSIRIS-REx Navigation at Bennu Article Swipe
Jason M. Leonard
,
J. Geeraert
,
Leilah K. McCarthy
,
Coralie D. Adam
,
Peter G. Antreasian
,
O. S. Barnouin
,
M. G. Daly
,
J. A. Seabrook
,
D. S. Lauretta
·
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.3847/psj/acd539
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.3847/psj/acd539
The Origins, Spectral Interpretation, Resource Identification, and Security–Regolith Explorer (OSIRIS-REx) spacecraft spent more than 2 yr characterizing near-Earth asteroid (101955) Bennu. The OSIRIS-REx Laser Altimeter (OLA) was responsible for producing the most accurate reconstruction of the asteroid’s surface—down to a global resolution of around 5 cm with a data precision of ±1.25 cm. However, the best-quality global OLA digital terrain model (DTM), version 21 (v21), was not available for navigation during proximity operations, nor was the utility of this model evaluated for processing images and altimeter data for navigation. The focus of this paper is the post-flight assessment of the final OLA v21 DTM, its performance for navigation-related analysis, and estimates of corrections needed for the DTM and measurement models. We created 15 cm resolution maplets for processing optical navigation (OpNav) data, and 5 cm resolution DTMs for processing altimeter data, to estimate a combined spacecraft trajectory over five phases of the mission. Our estimated corrections to the OLA instrument model produce altimeter data residuals with a precision of 7.12 cm (1 σ ; one standard deviation from the mean). The OpNav maplets produce image residuals at 0.2 px (1 σ ) and estimated landmark locations accurate to ±6 cm, outperforming DTM navigation-related performance requirements. Finally, our estimate of the global DTM scale is more precise and within 1.1 σ of previously reported values. We find that a slight discrepancy persists between the image and altimeter data, with image data suggesting that the DTM is too small by 0.049%, but nevertheless is exceptional for navigation.
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Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.3847/psj/acd539
- OA Status
- gold
- Cited By
- 3
- References
- 38
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4385361868
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4385361868Canonical identifier for this work in OpenAlex
- DOI
-
https://doi.org/10.3847/psj/acd539Digital Object Identifier
- Title
-
Post-flight Evaluation of Lidar-based Digital Terrain Models for OSIRIS-REx Navigation at BennuWork title
- Type
-
articleOpenAlex work type
- Language
-
enPrimary language
- Publication year
-
2023Year of publication
- Publication date
-
2023-07-01Full publication date if available
- Authors
-
Jason M. Leonard, J. Geeraert, Leilah K. McCarthy, Coralie D. Adam, Peter G. Antreasian, O. S. Barnouin, M. G. Daly, J. A. Seabrook, D. S. LaurettaList of authors in order
- Landing page
-
https://doi.org/10.3847/psj/acd539Publisher landing page
- Open access
-
YesWhether a free full text is available
- OA status
-
goldOpen access status per OpenAlex
- OA URL
-
https://doi.org/10.3847/psj/acd539Direct OA link when available
- Concepts
-
Altimeter, Remote sensing, Digital elevation model, Terrain, Ephemeris, GNSS applications, Lidar, Geodesy, Computer science, Geology, Satellite, Global Positioning System, Geography, Cartography, Physics, Astronomy, TelecommunicationsTop concepts (fields/topics) attached by OpenAlex
- Cited by
-
3Total citation count in OpenAlex
- Citations by year (recent)
-
2024: 1, 2023: 2Per-year citation counts (last 5 years)
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38Number of works referenced by this work
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10Other works algorithmically related by OpenAlex
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