R
Robert S. Afzal
Researcher at Goddard Space Flight Center
Publications - 38
Citations - 2668
Robert S. Afzal is an academic researcher from Goddard Space Flight Center. The author has contributed to research in topics: Laser & Laser power scaling. The author has an hindex of 15, co-authored 38 publications receiving 2395 citations.
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Journal ArticleDOI
Mars Orbiter Laser Altimeter: Experiment summary after the first year of global mapping of Mars
David E. Smith,Maria T. Zuber,Herbert Frey,James B. Garvin,James W. Head,Duane O. Muhleman,Gordon H. Pettengill,Roger J. Phillips,Sean C. Solomon,H. Jay Zwally,W. Bruce Banerdt,Thomas C. Duxbury,Matthew P. Golombek,Frank G. Lemoine,Gregory A. Neumann,David D. Rowlands,Oded Aharonson,Peter G. Ford,Anton B. Ivanov,Catherine L. Johnson,Patrick J. McGovern,James B. Abshire,Robert S. Afzal,Xiaoli Sun +23 more
TL;DR: The Mars Orbiter Laser Altimeter (MOLA) has been used to measure the topography, surface roughness, and 1.064-μm reflectivity of Mars and the heights of volatile and dust clouds as mentioned in this paper.
Journal ArticleDOI
Observations of the North Polar Region of Mars from the Mars Orbiter Laser Altimeter
Maria T. Zuber,David E. Smith,Sean C. Solomon,James B. Abshire,Robert S. Afzal,Oded Aharonson,Kathryn E. Fishbaugh,Peter G. Ford,Herbert Frey,James B. Garvin,James W. Head,Anton B. Ivanov,Catherine L. Johnson,Duane O. Muhleman,Gregory A. Neumann,G. H. Pettengill,Roger J. Phillips,Xiaoli Sun,H. Jay Zwally,W. Bruce Banerdt,T. C. Duxbury +20 more
TL;DR: Elevations from the Mars Orbiter Laser Altimeter (MOLA) have been used to construct a precise topographic map of the martian north polar region and correlation of topography with images suggests that the cap was more spatially extensive in the past.
Journal ArticleDOI
The MESSENGER mission to Mercury: scientific payload
Robert E. Gold,Sean C. Solomon,Ralph L. McNutt,A. G. Santo,James B. Abshire,Mario H. Acuña,Robert S. Afzal,Brian J. Anderson,G. Bruce Andrews,Peter D. Bedini,John Cain,Andrew F. Cheng,L. G. Evans,W. C. Feldman,Ronald B. Follas,George Gloeckler,George Gloeckler,John O. Goldsten,S. Edward Hawkins,Noam R. Izenberg,S. E. Jaskulek,Eleanor A. Ketchum,Mark R. Lankton,D. A. Lohr,Barry Mauk,William E. McClintock,Scott L. Murchie,C. E. Schlemm,David E. Smith,R. Starr,Thomas H. Zurbuchen +30 more
TL;DR: The MErcury, Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) mission as discussed by the authors is the first spacecraft to orbit the planet Mercury.
Journal ArticleDOI
Mars Orbiter Laser Altimeter: receiver model and performance analysis
TL;DR: The design, calibration, and performance of the Mars Orbiter Laser Altimeter (MOLA) receiver are described and the apparent surface reflectivity determined by the ratio of the echo to transmitted pulse energies is described.
Journal ArticleDOI
Mars Observer Laser Altimeter: laser transmitter.
TL;DR: A simple numerical model of the lasers energetics is presented, which predicts the pulse energy and pulse width and the temperature dependence of the laser transmitter is predicted.