Prof. William Hayden Smith,
Washington University, St. Louis, Mo
Last updated: October 2001
E-mail: whsmith [at] levee.wustl.edu
Brief Biographical Information:
Professor at Washington University in St. Louis, Ph.D., Princeton University, 1966
Professor Smith's research centers on the development and application of high-reliability
sensors for hyperspectral remote sensing from ground, airborne,
space-based platforms In recent years, he has developed imaging spectropolarimeters
based on acousto-optic tunable filters, and the Digital Array-Scanned
Interferometer or DASI (US Patent No. 4,976,542). He is presently developing
microscopy hyperspectral sensors for use under the extreme conditions
encountered in hot springs, boreholes, and the deep ocean.
- Terrestrial remote sensing using Imaging interferometry and other
hyperspectral imaging methods
- Application of radiative transfer theory and modern analysis techniques to
the interpretation of data from remote sensing instruments.
- Experimental studies of clouds and aerosols and their roles in the earth's
atmosphere and climate: radiative processes in atmosphere and on surface.
- Radiative interaction within leaves.
- Development of radiation remote sensing instruments.
- Optical spectroscopy: methods and instrumentation.
- Chemical kinetics and spectroscopy of gas phase molecular free radicals of
- Spectroscopy of molecules of astrophysical interest
Professor Smith conducts astrophysical and Earth observations with ground-based
and airborne versions of these remote-sensing instruments. At the telescope,
multispectral and hyperspectral sensors are primarily used in studies aimed at
the discovery of planetary sized objects outside the solar system as well as
studies of circumstellar matter. Studies of the Earth climate system recently
have emphasized the biological component, e.g. the recycling of nitrogen
nitrogen oxides, nitrates) in the environment. Using light aircraft and
long duration remotely piloted vehicles, hyperspectral sensors are being
applied to ocean reef
health studies, agriculture sensing, urban development, and other
Research on Leonid MAC:
The first attempt at Near-IR spectral imagery of meteors using the Digital Array-Scanned
Interferometer (DASI) in the 1999 Leonid MAC mission failed because no bright enough
meteor passed the field of view and active pointing towards trains was not attempted.
A -5 Leonid fireball missed the field of view by only a few degrees.
In the 2001 mission, the observing strategy will be adjusted to increase our chances of
meteor and meteor train detection, while the instrument sensitivity will be greatly enhanced.