The Time-Reversal Method for Source Reconstructions Within a Metallic Cavity: An Experimental Validation
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Bibliographic record
Abstract
Localizing and reconstructing interference sources is crucial in applications such as electromagnetic interference. While the electromagnetic time-reversal (TR) method has been proposed for source localization, there is limited experimental validation for TR source reconstructions. This letter presents a theoretical analysis and experiments that validate the feasibility of TR source reconstruction within a closed metallic cavity. Wideband signals emitted by the sources are measured at preselected locations in the frequency domain using a vector network analyzer. These measurements are then converted to time-domain signals using a simple algorithm and subsequently time-reversed. The time-reversed signals are injected back into the solution domain, and backward propagation is numerically simulated to locate sources, incorporating space and time kurtoses. The results confirm the effectiveness of the TR method, validating the theoretical analysis and providing a pathway for developing a realistic hardware-based TR source reconstruction system.
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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 | 0.000 | 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 it