Lunar Topography Modeling Using Laser Altimetry Data

Details Lunar Topography Modeling Using Laser Altimetry Data Lunar Topography Modeling Using Laser Altimetry Data

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufm.p51d1478w&link_type=abstract

American Geophysical Union, Fall Meeting 2010, abstract #P51D-1478

Mathematics

Logic

[5400] Planetary Sciences: Solid Surface Planets

Scientific paper

Size and shape are the fundamental quantities to provide insights into interiors and origins of planetary bodies. The topography of the Moon is rudimentary and recently available laser altimeter measurements from China’s Chang’E-1 (CE-1), Japan’s SELenological and ENngineering Explorer (SELENE or Kaguya), and U.S.’s Lunar Reconnaissance Orbiter (LRO) have already and will significantly improve the accuracy and resolution of the lunar topography model towards addressing open lunar science questions, including quantifying and studying the causes of global scale-asymmetry, impact basin sizes/location/features towards studying of the possible lunar orientation, lunar isostacy, and constraints on lunar tidal parameters. Japan’s Kaguya mission’s 3-satellite constellation enables accurate orbit determination and subsequently improved lunar far-side gravity field modeling. The application of (laser) altimeter crossover measurements for improving orbits of Mars mission has been demonstrated by MOLA science team. Here we integrate laser altimeter data from CE-1, SELENE (Kaguya), and LRO, which has the more accurate instrument with its multi-beam design, for the calibration of respective laser altimeter instruments, more accurate geolocation, and improved orbits for the respective orbiters, using single-satellite crossover and dual-satellite crossover techniques. The subsequent topography model obtained integrating the three distinct measurements will be improved with higher spatial resolution and accuracy, enabling gravity field improvement and lunar isostacy studies.

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