Imaging and Stereo Observations from HiRISE on the Mars Reconnaissance Orbiter

Details Imaging and Stereo Observations from HiRISE on the Mars Reconnaissance Orbiter Imaging and Stereo Observations from HiRISE on the Mars Reconnaissance Orbiter

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agufm.p21a0360e&link_type=abstract

American Geophysical Union, Fall Meeting 2002, abstract #P21A-0360

Mathematics

Logic

1224 Photogrammetry, 5464 Remote Sensing, 5494 Instruments And Techniques, 6225 Mars

Scientific paper

The High Resolution Imaging Science Experiment (HiRISE), part of a complement of instruments that will fly on the Mars Reconnaissance Orbiter (MRO) mission, will take thousands of images of the Martian surface with unprecedented spatial resolution and quality [McEwen et al., LPSC XXXIII, 2002, 1163]. At 300 kilometers altitude, HiRISE will offer a ground sampling scale of 30.0 cm/pixel capable of detecting meter scale features. A full panchromatic image will have 20,000 pixels crosstrack and 40,000 pixels downtrack providing a 6 by 12 kilometer ground swath. HiRISE additionally provides a simultaneous three-color imaging capability at the same pixel scale with a ground swath of 1.2 by 12 kilometers (4,000 x 40,000 pixels) occupying the center 20% of the panchromatic imaging. HiRISE employs a Time Delay and Integration array with 128 downtrack detectors that significantly increase the signal-to-noise ratio (SNR) of the imaging (>100:1 at all latitudes). HiRISE will be coaligned with the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) and the Context Imager (CTX) instruments in order to support simultaneous observations. The high resolution and SNR of HiRISE is expected to support landing site assessment and a wide range of geologic and climatic investigations including fluvial processes, polar geology, seasonal processes, volcanism, layering processes and stratigraphy, and glacial and regolith processes. The off-nadir pointing capability of the MRO spacecraft will offer opportunities to acquire HiRISE stereo observations of the highest-priority locations. Digital elevation models (DEMs) will be generated using digital stereomapping techniques [Kirk et al., JGR, 104(4E)] employing automated image matching, quality control techniques, and interactive DEM editing features found in BAE Systems' commercial digital photogrammetric software SOCET SET (Softcopy Exploitation ToolSET) [Miller and Walker, ACSM/ASPRS, 1993]. Vertical precision of HiRISE DEMs is expected to be 0.1-0.2 meter.

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