Evaluation of best-fit terrain elevation of ICESat-2 ATL08 using DGPS surveyed points
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Giribabu Dandabathula
,
Manish Verma
Abstract
NASA’s new Earth-Observing satellite namely ICESat-2 estimates the elevation of ice sheets, glaciers, sea ice, land surface, and canopy with the help of photon counting ATLAS sensor on-board. Higher-level data products like ATL08 uses an iterative filtering approach of the signal photons for capturing canopy height and terrain height. This article provides results from the evaluation of best-fit elevation on land from ICESat-2 ATL08 data product with DGPS surveyed points. 40 points were surveyed for elevation in the arid region with different topographies of varied surface cover. Mean bias error computed from the best-fit elevation from ICESat-2 ATL08 data product and corresponding DGPS surveyed points is near close to zero for the segments created from strong beams. The conformity between these two sets of elevation values is better than 12 cm (RMSE) if we use the segments from strong beam for the topographic variations ranging from flat to almost flat type.
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© 2020 Walter de Gruyter GmbH, Berlin/Boston
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Artikel in diesem Heft
- Frontmatter
- Research Articles
- Theoretical analysis of the influence of plane control network on lateral breakthrough error of long immersed tunnel
- Predicting displacement of bridge based on CEEMDAN-KELM model using GNSS monitoring data
- Precise point positioning with decimetre accuracy using wide-lane ambiguities and triple-frequency GNSS data
- Evaluation of best-fit terrain elevation of ICESat-2 ATL08 using DGPS surveyed points
- Application of singular spectrum analysis in reconstruction of the annual signal from GRACE
- Precision point positioning with additional baseline vector constraint
- Stochastic modeling for VRS network-based GNSS RTK with residual interpolation uncertainty
- A validated robust and automatic procedure for vibration analysis of bridge structures using MEMS accelerometers
- Review
- Short-term analysis of internal and external CORS clocks
- Research Articles
- Vertical land motion in the Iberian Atlantic coast and its implications for sea level change evaluation
