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Astronomical Applications Department, U.S. Naval Observatory - Data Flow Diagrams (Page 5)

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Astronomical Applications Department, U.S. Naval Observatory - Data Flow Diagrams
integrate
s/c eqs. of
motion
(murison)
create
astrometric
observations
(horner)
blur and
overlap
(monet,
zacharias)
CCD
corruption
(monet?
zacharias?)
external
torques
s/c
parameters
chip locations
& orientations
stars
- random
- catalog
CCD
parameters
optics
(diffraction)
pixel data
blurred
images
point star
observables
rotation
ephemeris
- noise
- photon noise
- read noise
- dark current
- trap effects
- discretization
- binning
- clock errors
optical
mapping
(horner)
optics
(geometric
aberrations)
distorted
ephemeris
FAME Data Simulator
12 September, 2000
- replace point with PSF
- identify overlap cases
- merge overlap cases
- map distortions
onto focal plane
- "detect" stars
- spin dynamics
- orbit dynamics
s/c attitude
s/c ranging
- misalignments
- optical surface
shape errors
input
parameters/
data
process
Symbol Key:
data flow
data store
explanatory comment
see http://aa.usno.navy.mil/SymTop/SpinDynamicsIssues.html
aberration
parameters
(effort organizer)

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