| NSSDC Master Catalog Display: Data Set |
CRRES Aerospace Agency Tape Data Sets: Ephemeris, Attitude, Instrument, B-field
NSSDC ID:SPMS-00076
Other ID(s)
90-065A-00A
Availability: Data at NSSDC Ready for Distribution
Time Span: 1990-10-11 to 1991-10-11 (as determined by NSSDC)
Description
This data set mainly includes files from the "Aerospace Agency Tapes"
compiled by the Aerospace Corporation for selected experiments from the
CRRES raw telemetry data stream provided through three digital processing
units (DPUs) supporting Aerospace-related sensors. These sensors are as
follows: the Magnetospheric Ion Composition Spectrometer (MICS), Heavy Ion
Telescope (HIT), Low Energy Magnetospheric Ion Composition Sensor (LOMICS),
the Medium Electrons A spectrometer (MEA), the Electron and Proton Wide-Angle
Spectrometer (EPAS), the Relativistic Proton Detector (RP), the Proton
Switches (PS1, PS2), and a 4-band photometer for chemical release
measurements. These instruments were turned on during Orbit 6, off at Orbit
365, and on again at Orbit 416 through the end of mission at Orbit 1067.
When another complement of instruments called LASSII were periodically
turned on for 20-minute or one-hour intervals near perigee for ionospheric
measurements, the RADSAT (magnetospheric) complement, including the Aerospace
instruments, were turned off. Spacecraft ephemeris, attitude, and magnetic
field data are also provided. For each ten-hour orbit of CRRES includes a
set of five files is provided from the original Agency tapes: header,
ephemeris, attitude, magnetic field, and the Aerospace instrument raw data
file. The magnetic field files are not those provided on the original Agency
tapes but include field vector components in magnetometer sensor coordinates
as computed from software and final calibration coefficients provided by the
CRRES magnetometer team. The instrument data are provided at raw telemetry
level in complex form, and users are requested to contact the responsible
experimenters concerning correct usage The binary data are encoded 32-bit
words for reading on IBM-compatible PC's; byte order may need to be reversed
for usage of other systems (e.g., VMS). FORTRAN source codes with
PC-executables are provided to extract selected parameters from the
spacecraft and instrument file types. References to documentation for the
Aerospace instruments are listed in the main readme file.
Mission Name(s)
CRRES
Discipline(s)
Space Physics: Magnetospheric Studies
Archive Locations
National Aeronautics and Space Administration (National Space Science Data Center)
Media Information
35 CD-Write Once
Personal Information
Experiment Information
Mission Information
NSSDC Space Physics page
NSSDC home page
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For questions about this dataset, please contact:
Dr. John F. Cooper
GSFC-Code 632
NASA Goddard Space Flight Center, Greenbelt, MD 20771
301-286-1193
jfcooper@pop600.gsfc.nasa.gov
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NASA Official: J. H. King (joseph.h.king@gsfc.nasa.gov)
Last Updated: 2000-09-07
Output Generated: 2001-03-06
Programming by: Harold Felder(Harold.Felder@gsfc.nasa.gov)