TOMS Flight Data Analysis
The Total Ozone Mapping Spectrometer (TOMS) is a joint US/USSR scientific
experiment launched aboard a USSR Meteor-3 spacecraft. The TOMS/Meteor-3
is the first NASA mission to place a Solid State Recorder (SSR) into orbit
as the main data recording device for the instrument. A SSR is a RAM-based
array of memory utilized for storing science and engineering telemetry on-
board the spacecraft. SSRs provide advantages over traditional tape
recorders in many respects. These include reduced power, weight, and
volume, random access to addressed data without the penalty over a tape
search, accomodating burst data transfers, selective data playback, ease of
data compression, elimination of ground-based data reversal, etc. The
TOMS/Meteor-3 SSR utilizes an array of Hitachi 256 Kbit SRAMs.
Have a look
at the paper Single Event Effect Flight Data
Analysis of Multiple NASA Spacecraft and Experiments; Implications to
Spacecraft Electrical Designs by C.M. Seidleck, K.A. LaBel, et. al. It
investigates in-flight SEEs observed on TOMS, CRUX, and SAMPEX.
Flight data available:
- Hitachi
256 kbit SRAMs: Error Detection and Correction (EDAC) detects & records
single and double bit errors
- Data is
available as a Mercator Projection, and as daily error counts
- TOMS
data is available for the following dates:
1993:
July 18 through December 31
1994:
January 2 through December 31
1995:
January 1 through March 11
To have
a look at specific data, please contact
Christina
Seidleck. She wrote the code & handles the data.
Return to Radiation Effects & Analysis Home Page
Curator: Martha
O'Bryan
Last Revised April 06, 2001
A service of the Radiation Effects and Analysis Group,
Kenneth A. LaBel,
Group Leader
