Miniaturized, Low-Power Laser Altimeter (MLLA)

Details Miniaturized, Low-Power Laser Altimeter (MLLA) Miniaturized, Low-Power Laser Altimeter (MLLA)

Jan 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001iaop.work...22c&link_type=abstract

Forum on Innovative Approaches to Outer Planetary Exploration 2001-2020, p. 22

Mathematics

Logic

Laser Altimeters, Miniaturization, Spacecraft Instruments, Space Exploration, Planetary Geology

Scientific paper

High accuracy measurements of surface elevations, slopes, and roughness from laser altimeters are primary datasets for geophysical and geological studies of planetary bodies. Surface elevations together with gravity measurements allow us to probe the internal structures (e.g., crustal thicknesses and density variations). These measurements can be used to relate crustal structures with the volcanic plumes on Triton, or with flexure due to a subsurface ocean as hypothesized on Europa. In addition, high-resolution measurements of surface topography reveal detailed geologic processes shaping the surface. To obtain these data, a miniaturized, low-power laser altimeter will be developed to provide high spatial and temporal resolution altimetry from an orbiting platform. The capability of this altimeter design, denoted MLLA, will lend itself to exploration of the outer planets by incorporating recent efforts to reduce both mass and power consumption of laser altimeters while enhancing measurement capability. In particular, to satisfy mission design requirements for the exploration of exceedingly distant objects from the sun, mass and power become premium commodities. For an altimeter associated with any outer planet missions, total mass should not exceed 3.5 kg and average power should be less than 6 W. In addition, altimeter designs must implement techniques to improve signal sampling while working at nadir ranges in excess of 100 km. The MLLA addresses each of these issues. Additional information is contained in the original extended abstract.

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