Experimental validation of coherent multiple‐input multiple‐output radar antenna patterns
Bibliographic record
Abstract
This study specifies the antenna radiation patterns of a linear array radar operating in a phased array configuration and in two colocated multiple‐input multiple‐output (MIMO) configurations. The MIMO‐1 configuration uses orthogonal transmission on all elements, while the MIMO‐2 configuration uses orthogonal transmission on the two end elements. The theoretical two‐way antenna radiation patterns are derived for all three configurations. Field experiments with an eight‐element, X ‐band linear array radar and trihedral targets are then described. The experimental mainbeam patterns are shown to match those of the theoretical patterns. MIMO‐1 is shown to have the same two‐way radiation pattern as that of the phased array radar configuration. Compared with MIMO‐1 and phased array, MIMO‐2 has enhanced angle estimation accuracy, lower gain, and higher sidelobes while only requiring two orthogonal waveforms on transmit.
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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 | 0.002 |
| Meta-epidemiology (narrow) | 0.001 | 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 | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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".