PDS Geosciences Node Washington University in St.Louis http://wwwpds.wustl.edu E-mail: geosci@wunder.wustl.edu
PSPG-00296
Volumes in the MGSL_10-- series contain the AEDR's from the mapping phase of the mission stored as binary data files. Volumes in the MGSL_20-- series contain PEDR's, EGDR's, and Spherical Harmonics Data Records (SHADR's, a numerical transform of the EGDR's). The PEDR's are stored as binary data files and also as ASCII tables. The data sets contain information on the timing and position of laser shots and returns, and other instrument parameters for each shot. The Version 1 EGDR's (Volumes MGSL_2001 to MGSL_2023) are in the form of ASCII tables with one row for each 1 by 1 degree, 1/2 by 1/2 degree (and for volume MGSL_2023 1/4 by 1/4 degree) latitude-longitude bin, from 90 to -90 degrees latitude and from 0 to 360 degrees longitude. A row of data contains (for each bin, or 1 x 1 degree square): mid-bin longitude, mid-bin latitude, mean measured planetary radius in the bin, mean areoid radius in the bin, measured topography, and number of observations. The version 2 EGDR's (Volumes MGSL_2024 and above) are in the form of images (.img files) which can be read using the NASAView software. These images have resolutions up to 1/16 degree starting with volume MGSL_2032. Detailed descriptions of the content of the data files is stored on the CD-ROM. The MOLA ranges and precision orbit data are preliminary, and will be revised as knowledge of the spacecraft and the martian gravity field improves. The CD-ROM has been formatted so that a variety of computer systems (e.g., PC, Macintosh, and Sun) may access the data. Specifically, it is formatted according to the ISO-9660 level 1 Interchange Standard.
1. Incomplete Set. NSSDC has not yet received one or more volumes of this set. You will be charged only for those volumes in the set that we have in stock. Please check back periodically to order any remaining volumes which have arrived. Please use your browser back button to return to the CD-ROM catalog from the links below. Otherwise any information you have entered will be lost. More AEDR Information Mars Global Surveyor Page CD's On-line NSSDC Home Page Catalog content & ordering questions contact: Request Coordination Office Programmer/Curator: Kelly Gygax NASA Privacy Policy & Important Notices NASA Official: Ed Grayzeck, edwin.j.grayzeck@nasa.gov Last Updated: 12 February, 2009