Uncorrected traverse data for Opportunity and Spirit rovers are generated by using values derived from counting wheel rotations and integrating positions, an imprecise process. The science team improved the rover location accuracy and corrected for wheel slip and skid by comparing features in the high resolution orbital images with those in ground-based rover images where possible. Based on adjustments from the science team, the PDS Geosciences Node created a corrected versions of each rover traverse by applying linear interpolation to positions between corrected points.
The PDS interpolated traverse data below are provided as ASCII tables (comma separated values). Each table has columns for site, drive, start sol, end sol, raw x position, raw y position, raw z position, correct x position (easting), and corrected y position (northing). In addition, KML versions of the rover traverses are available.
| Data product | File | Contents |
|---|---|---|
| Spirit traverse data |
MERA_traverse.csv (484 KB) MERA_traverse.lbl (6 KB) MERA_traverse.zip (375 KB) |
Spirit rover traverse provided by science team member Tim Parker. |
| Spirit base map |
PSP_001777_1650_RED_A_01_MERA.zip
(106 MB) MERA_Basemap_25cm_README.txt (3 KB) |
The basemap represents a small portion of Gusev Crater from the Spirit Lander position to Home Plate, south of Husband Hill. This basemap is a section clipped from the HiRISE orthoimage PSP_001777_1650_RED_A_01_ORTHO (NASA/JPL/University of Arizona/USGS). |
| Opportunity traverse data |
MERB_traverse_5130.csv (1 MB) MERB_traverse_5130.lbl (6 KB) MERB_traverse_5130.zip (1 MB) |
Opportunity rover traverse provided by science team member Tim Parker. |
| Opportunity base map |
MER_Meridianni_Endeavor_ Basemap_25cm.jp2 (6 GB) MER_Meridianni_Endeavor_ Basemap_25cm_README.txt (3 KB) |
Photometrically balanced mosaic from CTX 5m/pixel and HiRISE 0.25 cm/pixel visible images georeferenced to MOLA elevation using an HRSC nadir (ND4) orthophoto and DEM (DA4). |
| Eagle Crater DTM, binary format |
eagle_dtm_binary.bin
(68 MB) eagle_dtm_binary_header.txt (2 KB) |
The .bin file is a generic binary file with the elevation value of each cell (pixel) stored sequentially line by line from the upper left corner to lower right corner. The header file (_header.txt) is a plain text file; it provides necessary information for reading the binary file including number of rows and columns, data type (IEEE 32 bit float), byte_order (Motorola or Intel), X coordinate of upper left corner, Y coordinate of upper left corner, X coordinate of lower right corner, Y coordinate of lower right corner, pixel (cell) width, pixel height, map unit, and so on. |
| Eagle Crater DTM, ASCII format | eagle_dtm_ascii.txt (3 MB) | The format is the same ASCII grid format as that of Surfer (a 3D surface display software system). The first line is a unique identifier "DSAA". Line 2 specifies the number of columns and rows. Lines 3 and 4 give the minimum and maximum coordinates of X and Y, respectively, to define the boundaries of the grid. Line 5 contains the smallest and largest elevation value of the grid. Afterwards, the elevation values are stored line by line from the bottom (south). Within each line, the elevation values are stored from left (west) to right (east). |
| Endurance Crater DTM, binary format |
endurance_dtm_binary.bin (28 MB) endurance_dtm_binary_header.txt (2 KB) |
The .bin file is a generic binary file with the elevation value of each cell (pixel) stored sequentially line by line from the upper left corner to lower right corner. The header file (_header.txt) is a plain text file; it provides necessary information for reading the binary file including number of rows and columns, data type (IEEE 32 bit float), byte_order (Motorola or Intel), X coordinate of upper left corner, Y coordinate of upper left corner, X coordinate of lower right corner, Y coordinate of lower right corner, pixel (cell) width, pixel height, map unit, and so on. |
| Endurance Crater DTM, ASCII format | endurance_dtm_ascii.txt (1 MB) | The format is the same ASCII grid format as that of Surfer (a 3D surface display software system). The first line is a unique identifier "DSAA". Line 2 specifies the number of columns and rows. Lines 3 and 4 give the minimum and maximum coordinates of X and Y, respectively, to define the boundaries of the grid. Line 5 contains the smallest and largest elevation value of the grid. Afterwards, the elevation values are stored line by line from the bottom (south). Within each line, the elevation values are stored from left (west) to right (east). |