Abstract
Radio interferometry is a new technique for the measurement of the surface topography of the Moon. Elevation data may be obtained directly without regard for unambiguously-identified features, for any lunar surface element that yields a recognizable radar echo.
A program has been undertaken at the Haystack Observatory for the topographic mapping of the major part of the lunar Earthside hemisphere. Some results are presented for the Alphonsus-Arzachel region, showing evidence for a late lava flow of a viscosity and, hence, presumably a chemical composition, differing from that of near-by mare surfaces.
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Zisk, S.H. A new, earth-based radar technique for the measurement of lunar topography. The Moon 4, 296–306 (1972). https://doi.org/10.1007/BF00561997
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DOI: https://doi.org/10.1007/BF00561997