PIA16093: Curiosity Leaves Its Mark


Curiosity Leaves Its Mark

Caption:

This image shows a close-up of track marks from the first test drive of NASA's Curiosity rover. The rover's arm is visible in the foreground. A close inspection of the tracks reveals a unique, repeating pattern: Morse code for JPL. This pattern, visible as straight bands across the zigzag track marks, can be used as a visual reference to help the rover drive accurately.

Curiosity's "visual odometry" software measures terrain features -- such as rocks, rock shadows and patterns in the rover tracks -- to determine the precise distance between drive steps. Knowing how far it has traveled is important for measuring any wheel slippage that may have occurred, for instance due to high slopes or sandy ground. Fine-grained terrains generally lack interesting features, so Curiosity can make its own features using its wheel tracks.

The Morse code, imprinted on all six wheels, is: .--- (J), .--. (P), and .-.. (L). JPL is short for NASA's Jet Propulsion Laboratory in Pasadena, Calif., where the rover was built and the mission is managed.

Background Info:

JPL manages the Mars Science Laboratory/Curiosity for NASA's Science Mission Directorate in Washington. The rover was designed, developed and assembled at JPL, a division of the California Institute of Technology in Pasadena.

For more about NASA's Curiosity mission, visit: http://www.jpl.nasa.gov/msl , http://www.nasa.gov/mars , and http://marsprogram.jpl.nasa.gov/msl .

Cataloging Keywords:

Name Value Additional Values
Target Mars
System
Target Type Planet
Mission Mars Science Laboratory (MSL)
Instrument Host Curiosity Rover
Host Type Rover
Instrument
Detector
Extra Keywords Grayscale, Shadow
Acquisition Date
Release Date 2012-08-29
Date in Caption
Image Credit NASA/JPL-Caltech
Source photojournal.jpl.nasa.gov/catalog/PIA16093
Identifier PIA16093