Title :
Satellite microwave radiometry of forest and surface types in Finland
Author :
Hallikainen, Martti T. ; Jolma, Petri A. ; Hyyppa, J.M.
Author_Institution :
Helsinki Univ. of Technol., Espoo, Finland
fDate :
9/1/1988 12:00:00 AM
Abstract :
10.7-, 18-, and 37-GHz data from the Nimbus-7 Scanning Multichannel Microwave Radiometer (Nimbus-7 SMMR) were used to investigate the microwave response to different surface and forest types. SMMR data for the fall seasons of 1978 through 1981 were compared against a digital surface type map that shows seven different surface types for southern Finland and six for northern Finland. For each land-cover category, the brightness temperature behavior as a function of frequency and polarization was determined. The precision of the results is evaluated, and they are compared to other published results. The discrimination of land-cover categories using the brightness temperature is discussed
Keywords :
geology; natural resources; remote sensing; 10.7 GHz; 10.7 to 37 GHz; 18 GHz; 37 GHz; AD 1978 to 1981; EHF; Finland; SHF; brightness temperature; forest; geology; land surface; land-cover; microwave emission; microwave radiometry; remote sensing; surface type map; surface types; vegetation; Brightness temperature; Frequency; Microwave radiometry; Ocean temperature; Polarization; Response surface methodology; Satellite broadcasting; Sea measurements; Sea surface; Spaceborne radar; Synthetic aperture radar;
Journal_Title :
Geoscience and Remote Sensing, IEEE Transactions on
