SAMPEX Flight Data

The Solar Anomalous Magnetosphere Particle Explorer (SAMPEX) is the first in a series of Small Explorer spacecraft being managed by GSFC. In order to meet mission constraints of power, weight, and volume, newer enabling technologies were utilized. These include a Solid State Recorder/SSR (a RAM-based array of memory utilized for storing science and engineering telemetry on-board the spacecraft), the SEDS MIL-STD-1773 Fiber Optic Data Bus (the first utilization of a fiber optic data bus as an in-line spacecraft subsystem), the Intel 80386 microprocessor family (currently a candidate or baseline for XTE, TRMM, portions of EOS-AM, Space Station, et al...), surface mount technology, etc...

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 SAMPEX, CRUX, and TOMS.

Flight data available:

SEDS MIL-STD-1773 Fiber Optic Data Bus:
Unsuccessful bus transmissions are automatically retried & recorded

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:
Sample Mercator Projection: 1773 Bus Retries, February 10-28, 1995 (14k)
Sample Daily Error Count: 1773 Bus Retries, February 10-26, 1995 (15k)

SAMPEX data is currently available for the following dates:
1993: April 8 through September 14
1994: May 4 through September 25
1995: February 10 through March 25
To have a look at specific data, please contact Christina Seidleck. She wrote the code & handles the data.
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Curator: Martha O'Bryan
Last Revised April 2, 2001
A service of the Radiation Effects and Analysis Group, Kenneth A. LaBel, Group Leader