POSICIONAMENTO RELATIVO COMBINANDO AS OBSERVÁVEIS GPS E SBAS
Bibliographic record
Abstract
O sistema SBAS fornece aos seus usuarios, em tempo real, informacoes de acuracia e integridade, atraves das correcoes diferenciais que sao transmitidas pelos satelites geoestacionarios. Este sistema esta disponivel em regioes especificas do globo terrestre, dentre elas: Estados Unidos, Canada e Europa. No Brasil este sinal e transmitido na mesma frequencia L1 do sistema GPS, porem nao em tempo real, mas atraves de um protocolo chamado MT27 e alguns receptores possuem canais de frequencia especifica que captam estes sinais, com a promessa de que estes dados melhoram as condicoes do rastreio e a precisao das coordenadas. Utilizou-se a observavel fase da onda portadora (L1) para inferir sobre a sua contribuicao para o posicionamento. Os dados dos satelites SBAS foram processados e analisados conjuntamente (GPS+SBAS) e separadamente (apenas GPS); assim podem-se comparar as coordenadas e analisar a contribuicao que os dados SBAS produzem no posicionamento, em bases curtas (ate 10 km), utilizando-se de posicionamento relativo.
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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 | 0.001 | 0.005 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.002 | 0.003 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.003 | 0.001 |
| Open science | 0.001 | 0.002 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.005 | 0.002 |
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".