A High-Frequency Surface Wave Radar Ionospheric Clutter Model for Mixed-Path Propagation With the Second-Order Sea Scattering
Bibliographic record
Abstract
A theoretical second-order monostatic high-frequency radar power model is derived for the case of mixed-path ionosphere-ocean propagation. First, the general form of the received electric field is investigated by considering the ionospheric reflection and the second-order sea scattering, which involves both electromagnetic and hydrodynamic contributions. Then, this field is inversely Fourier transformed to the time domain, and a pulsed source is incorporated. Subsequently, the second-order received power model is developed by assuming that the ionospheric reflection coefficient and the ocean surface can be described as Fourier series whose coefficients are random variables. In order to investigate the power spectrum of the mixed-path propagation and its relative intensity to that of the surface propagation under a variety of ionospheric conditions and sea states, a normalized power is simulated.
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How this classification was reachedexpand
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 | 0.000 | 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, 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".