Arroyo overview Matt Britton CalTech

1
Arroyo overviewMatt Britton (CalTech)
2
Arroyo comparison
How does Arroyo stack up against the competition?
3
Arroyo overview

• C libraries to simulate EM waves through
  atmospheric turbulence and adaptive optic systems
• Meant to serve as a class library for end user

4
Arroyo examples
5
simple_simulation
A single atmospheric phase screen acts to corrupt
wavefronts, which are then propagated to the far
field to form a turbulence-degraded image
6
simple_simulation.C
simple_simulation -A c 5 -f 4 4 -l 2.2e-6 -n 10
-P .02 .02 -r .15 .5e-6-S l 3 -s 1 -t .01 -v -w 10
7
simple_simulation.C
simple_simulation -A c 5 -f 4 4 -l 2.2e-6 -n 10
-P .02 .02 -r .15 .5e-6-S l 3 -s 1 -t 1. -v -w 10
8
model_simulation.C
5 arcsec
1 arcmin
9
Arroyo limitations

• Previous simulation 1 arcmin field of view
• Maximum practical simulation 10 arcmin
• 10 arcmin at 15km gt 50 m at screen
• 250m for Nyquist
• Want lt 0.05m mesh gt 2000200032 bytes

10
Conclusions

• Arroyo imperfect, but already functional.
• Real-time support, well-written, partially
  documented and numerous examples.
• Looks promising