SSI Raw Experiment Data Record (REDR) for Phase 2 - USGS PDS ...

Solid State Imaging Raw Experiment Data Record Software Interface Specification
B–1
Appendix B
PICTURE NUMBER
The structure of the picture number field in the REDR header is a seven ASCII
character string, of the form "XXYZZZZ"
where:
XX = Orbit. 00 is from 5 days before JOI to the periapse following JOI.
Subsequent orbits increment normally. Approach images are separated into
logical phases and designated A1, A2, A3 or similar. Cruise images are
separated into calender periods of 3, 6, or 12 months and designated C1, C2,
Y = Target Body.
where:
J
A
I
E
G
C
S
R
H
L
W
V
U
P
N
etc.
Jupiter
Amalthea
Io
Europa
Ganymede
Callisto
Minor satellites
Ring
Star
Moon
Earth
Venus
Ida
Gaspra
Non-Science
(Calibration)
etc.
ZZZZ = Picture Count. This count will be generated in the sequence
generation process and will be incremented separately for each target body
in each orbit. It will jump a few counts for each profile activity
initialization to simplify subsequent sequence changes.