Here are some USGS Web pages with more information on microwave imaging and Anywhere:
Mapping snow from air and space
Paper by Anne W. Nolin presented at the Workshop on Remote Sensing of Planetary Ices: Earth and other Solid Bodies, Flagstaff, 1997. Summary on mapping snow coverage and properties by satellite and airborne remote sensing methods.
(Score: 1.000)
Definition:
Passive remote sensing methods utilizing energy naturally reflected or radiated from the terrain in the approximate wavelength range from 1 mm to beyond 1 m. Active remote sensing is radar imaging. [Adapted from Glossary of Geology, 4th ed.]