Systematic effects in absolute chamber calibration of gps antennas
Bibliographic record
Abstract
Les effets d'antenne sont les principaux responsables des erreurs des systemes GPS, a l'exception des effets de trajets multiples. Ils sont causes par l'heterogeneite des diagrammes electromagnetiques des antennes et sont habituellement decrits par l'ecart et les variations de leur centre de phase. Dans cet article, nous vous presentons une methode de calibrage absolu des antennes GPS dans des chambres anechoiques. Principalement, nous vous presentons une methode d'evaluation quantitative des erreurs reliees a la chambre. Nous avons mis en oeuvre plusieurs differents essais en laboratoire et nous avons evalue tout particulierement les influences systematiques de la temperature et du niveau du signal. Nous avons aussi compare nos resultats a ceux d'une methode independante de calibration absolue sur le terrain. Nous avons determine que la precision de la calibration a des elevations superieures a 10 degres est generalement meilleure qu 'un millimetre (I a) et encore meilleure que deux millimetres pour les plus faibles elevations.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.004 | 0.021 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.001 | 0.001 |
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.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".