Effects of Dust and Thermal Cycling on Telescope Mirror Performance
In this study, 1 cm ? 1 cm square optical-grade aluminized glass mirrors were measured for maximum light reflectance and then the loss of reflectance due to the presence of different specific...
Roll Waves in Mud Flow
Permanent roll waves on a shallow layer of fluid mud which is modeled as a power-law fluid is studied. Based on long-wave approximation, momentum integral method is applied to derive the...
Real-Time Condition Monitoring of Concrete Structures by Embedded Optical Fibers
Fiber optic sensor methodology has matured to the point where the impact of this new technology is now evident, especially in aeronautics and space structure applications. External perturbations...
ESCAPE: Small Payload Strategies
The Extreme ultraviolet Solar Contained Autonomous Payload Experiment (ESCAPE) is a small payload scheduled to fly on the Space Shuttle in April 1992. This payload has been developed at...
Some Considerations for Instrumentation for a Lunar-Based Solar Observatory
Outstanding problems in solar physics, observational trends and directions of instrumental development in solar astronomy are discussed briefly. These lead to the specification of observational...
SALSA: A Lunar Submillimeter-Wavelength Array
A conceptual design is described for a lunar submillimeter-wavelength interferometer called SALSA, a Synthesis Array for Lunar Submillimeter Astronomy. The intent is to describe SALSA...
Accuracy and Resolution of Surface Wave Inversion
Shear wave velocity profiles of soils and pavements may be evaluated nondestructively using surface wave tests such as the Spectral Analysis of Surface Waves (SASW) method. In these tests,...
Sounding Out Buried Waste
Geophysical diffraction tomography (GDT) is a new remote sensing technique for quantitative high-resolution subsurface imaging. It is similar to optical holography where long wavelength...
Lunar Automatic Photoelectric Telescopes (LAPTs)
I propose a lunar network of modest (approximately 1 m), robust telescopes designed for and dedicated to precise, time-serial monitoring of variable sources. Unhampered by atmospheric...
Whither Satellite Remote Sensing�II�
For about six years, NASA SERTS (now called Landsat) satellites have been circling the globe, radioing back digital information on what they see on earth. After being massaged by computer,...
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