{"thcode":2,"term":{"code":742,"name":"microwave imaging","parent":981,"scope":"Remote sensing method using short high frequency electromagnetic waves reflected or radiated from the ground."},"uf":[],"bt":[{"code":981,"name":"remote sensing","parent":734,"scope":"Acquiring information about a natural feature or phenomenon, such as the Earth's surface, without actually being in contact with it. USGS remote sensing is usually carried out with airborne or spaceborne sensors or cameras."},{"code":734,"name":"methods","parent":1,"scope":"Techniques, methods, procedures, or strategies for research, management, collection, or analysis of scientific information in USGS."},{"code":1,"name":"Categories","parent":null,"scope":"Thematic terms for categorizing information resources.  This thesaurus is intended to support finding and understanding scientific information."}],"nt":[{"code":1069,"name":"SMMR","parent":742,"scope":"Scanning Multichannel Microwave Radiometer (SMMR), a technique which uses a multichannel microwave radiometer mounted on an airplane or satellite to measure polarized microwave radiances from the atmosphere, seas or land. Temperatures, wind speeds, sea ice coverage, and terrain parameters can be obtained."},{"code":1097,"name":"SSM\/I","parent":742,"scope":"Special Sensor Microwave\/Imager (SSM\/I), technique using passive microwave radiometers aboard satellites to measure the microwave reflectivity of the earth, oceans, and the atmosphere."}],"rt":[{"code":447,"name":"geography","parent":291,"scope":"Study of the earth's landforms, topography, and climate, the distribution of flora and fauna, and the distribution, culture, and activities of human populations."},{"code":948,"name":"radar imaging","parent":981,"scope":"A remote sensing technique which uses the reflection of pulsed high frequency radio waves to determine the speed, direction, and distance of faraway objects."}]}