Doppler blind zone analysis for ground target tracking with bistatic airborne GMTI radar
Why this work is in the frame
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Bibliographic record
Abstract
This paper investigates the Doppler blind zone of bistatic transmitter and receiver configurations and its impact on the tracking of ground targets based on measurements from airborne ground moving target indication (GMTI) radar. The Doppler blind zone arises from the clutter cancellation by space-time adaptive processing (STAP). In general, this poses a significant challenge in ground target tracking because low-Doppler targets can easily be hidden within this blind zone, leading to sequences of missed detections that strongly deteriorate the performance of a standard tracking filter. In this study the width of the bistatic Doppler blind zone is calculated and this knowledge is incorporated into a UKF-MHT tracking algorithm. Based on simulation scenarios, it is demonstrated that in contrast to a monostatic configuration with sideways-looking radar, the minimum detectable velocity that characterizes the width of the Doppler blind zone does not need to be constant. Track results reveal the benefit of exploiting this additional knowledge.
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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 | 0.003 | 0.000 |
| Meta-epidemiology (narrow) | 0.002 | 0.002 |
| Meta-epidemiology (broad) | 0.003 | 0.001 |
| Bibliometrics | 0.003 | 0.007 |
| Science and technology studies | 0.002 | 0.000 |
| Scholarly communication | 0.002 | 0.006 |
| Open science | 0.002 | 0.000 |
| Research integrity | 0.001 | 0.002 |
| Insufficient payload (model declined to judge) | 0.001 | 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 it