Ship-to-ship beyond line-of-sight communications: A comparison between ray tracing simulations and the PETOOL
Why this work is in the frame
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Bibliographic record
Abstract
A Matlab-based ray tracing (RT) simulator is implemented for the analysis of ship-to-ship communications. The anomalous propagation effect due to the evaporation duct which results in bending and/or trapping the rays is modelled. Based on extensive RT simulations, the received rays are identified and their parameters are estimated. We briefly describe the implementation of the RT simulator and compare the obtained ray tracing results with those obtained from a widely used simulation tool, the PETOOL. We highlight the excellent agreement between the two tools for line-of-sight (LOS) ranges and also highlight that there is significant disagreements between them for beyond-line-of-sight (beyond-LOS) ranges. Then, based on our RT simulator, we provide detailed results describing the effect of the evaporation duct phenomena on the communication link quality in the beyond-LOS zone.
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Full frame distilled prediction
Teacher imitationNot 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.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
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.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it