PR125 Compact Thermal Target
Secondary Release 5 representative sequence testing acquisition, gain, blur, and apparent target growth in PR125.
Archive path: Release_5/Analysis/C107-Release-5-Secondary-Representative-Frame-Sequence.md
Workflow: AI-assisted analysis path with source citations, conventional checks, and clearly labeled interpretation.
Audience: serious-uap-readers
Source: [DOW PR125 / DOD_111887376](/?open=Release_5%2FDOD_111887376.mp4). Samples: [15.000s](/?open=Release_5%2FDOD_111887376.mp4&t=15), [16.000s](/?open=Release_5%2FDOD_111887376.mp4&t=16), [17.000s](/?open=Release_5%2FDOD_111887376.mp4&t=17), [18.000s](/?open=Release_5%2FDOD_111887376.mp4&t=18), and [19.000s](/?open=Release_5%2FDOD_111887376.mp4&t=19).
The first two samples are dominated by a noisy low-contrast field. A compact dark return becomes separable near 17 seconds and is larger/darker at 18-19 seconds. This establishes detection continuity across the later samples and captures a transition in apparent image strength.
It does not establish physical growth or approach. Pixel size can change through focus, gain, thresholding, interpolation, tracking, compression, field-of-view change, or slant-range change. The sparse background makes camera motion difficult to separate from object motion.
The fixed geometry review preserves the acquisition sequence but does not recover a stable edge. The return remains a small unresolved thermal blob.