DOA Estimation Based on an Adversarial Learning Network via Small Antenna Arrays
Bibliographic record
Abstract
As a key technology for radio monitoring and positioning, direction-of-arrival (DOA) estimation has garnered significant attention and has undergone in-depth research. This article proposes a new subspace-based DOA estimation algorithm based on an adversarial learning network. Considering the impact of the number of antennas in the signal-receiving array on the resulting DOA estimation accuracy, the proposed algorithm takes a covariance matrix corresponding to a small antenna array as the input of the adversarial learning network and reconstructs an extended covariance matrix corresponding to a virtual large antenna array. By introducing subspace technology, the multiple signal classification (MUSIC) algorithm can achieve high-resolution DOA estimation. Therefore, the extended covariance matrix corresponding to the virtual large antenna array is combined with the MUSIC to achieve DOA estimation. Simulated and real-world experimental results demonstrate that compared with conventional subspace-based DOA estimation algorithms, the proposed algorithm achieves significantly improved DOA estimation performance.
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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 | 0.003 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.001 | 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 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".