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Record W2185908780

GEOMATICS WITH RADARSAT IMAGERY

2009· article· en· W2185908780 on OpenAlex
A. A. Alsalman

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

aboutThe title or abstract carries a Canadian signal from the geographic lexicon.
no affNo Canadian affiliation: this work is invisible to an affiliation-only frame.
No Canadian affiliation. An affiliation-only frame, the usual design, would never have seen this work. It is one of the works that make the case for inverting the frame.

Bibliographic record

Venuenot available
Typearticle
Languageen
FieldEngineering
TopicSatellite Image Processing and Photogrammetry
Canadian institutionsnot available
Fundersnot available
KeywordsRemote sensingSynthetic aperture radarGeomaticsDigital elevation modelScale (ratio)Radar imagingSatellite imageryRadarSatelliteGeographyGeologyComputer scienceCartographyEngineering
DOInot available

Abstract

fetched live from OpenAlex

The present study is concerned with an investigation of the potential of third generation satellite-borne synthetic aperture radar (SAR) imagery, as exemplified by that flown onboard the Canadian Space Vehicle Radarsat, for topographic mapping applications at medium and small scales (1/50000-1/250000). Two test areas in Saudi Arabia and Sudan were made to undergo a series of extensive and comprehensive geometric accuracy tests of the Radarsat system to investigate the ability of these images for topographic mapping applications, DEM generation, radar ortho-photo production and radar profiling. The results show that the SAR fine mode F2 image of Riyadh is suitable for mapping at scale of 1/50000, while the standard mode S1 image satisfies the requirements of planimetric mapping at 1/100000 scale. The wide mode W2 image of Kassala area in Sudan is commensurate with only the requirements of 1/400000 scale and smaller. In this respect, the effects of uncompensated geometric scale errors in their raw uncorrected state are clearly noticeable in most images. Digital elevation model generation is possible with high resolution SAR stereo techniques. In this respect the accuracy achieved in

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Other design · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: none
Teacher disagreement score0.966
Threshold uncertainty score0.263

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.005
GPT teacher head0.188
Teacher spread0.183 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it