220 likes | 437 Views
Omnipresent Target Engagement Requirement. All individual tracking and engagement components have been operated successfully.All components necessary for a glint-only hit-on-the-fly demo have been integrated and are operational.. Final Key Requirement:20 m engagement accuracy in (x,y,z) at
E N D
2. Omnipresent Target Engagement Requirement All individual tracking and engagement components have been operated successfully.
All components necessary for a glint-only hit-on-the-fly demo have been integrated and are operational.
3. Current tabletop target engagement demo is complete with one simulated driver beam
4. Hit-on-the-fly experiment has demonstrated engagement on moving target Update time of Poisson spot centroiding algorithm down from 10 ms to 3.5 ms in software.
Fringes off falling target counted over 3 mm.
Using crossing sensors, the timing & triggering system triggers all necessary lasers/components on-the-fly.
Engaged moving targets with a simulated driver beam by using the glint return signal to steer a fast steering mirror.
Verification system has been used to measure error in target engagement.
150 µm range
6 µm resolution
5. A range of tracking/engagement scenarios call for different requirements
7. Reduced region of interest (ROI) technique further improves update time Update time reduced from 10 ms to 3.5 ms by implementing a “dynamic ROI” in software.
Number of pixels to process is reduced from 307k to 10k.
8. New centroiding algorithm implements dynamic ROI
10. Fringe counting has been demonstrated over 3 mm Lower-noise photo-detector
Higher-power laser (60 mW)
=> Fringes off falling target counted over 3 mm
12. Crossing sensors & real-time operating system compute predicted target location on-the-fly
14. All necessary components have been integrated for glint-only target engagement demo
15. Wedged dichroic mirror compensates for glint/chamber center offset
16. We have engaged moving targets with a simulated driver beam
17. Effort to improve engagement accuracy to 20 µm must address & minimize all uncertainties
18. Glint return is used to make one final steering mirror correction depending on PSD reading
19. Peak-hold circuit picks off PSD voltage more consistently than software
21. Applet post-processes snapshot to verify target engagement accuracy
22. Summary of progress & plans