Definition
Any region on a geologic surface that shows characteristic physical or dielectric properties, different from that of the surroundings and/or the global average, which are identified through the interaction between the surface and the radar signal.
The radar signal produces a reflected signal, whose amplitudes and polarizations depend upon the relative geometry of the feature and the dielectric properties of the media.
Synonyms
Related Terms
Microwave imaging
Description
Any surface feature discernible on radar images. A radar feature is characterized by the portion of reflected radar signal due to a physical roughness or topographical change of the surface or a compositional change between terrain units in a geologic surface.
Subtypes
Many landform types have distinct radar signatures. Rough mountains or blocky impact ejecta are typically radar-bright, while smooth surfaces, e.g., lakes, are typically radar-dark. Many types of prominent radar features...
References
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Hargitai, H., Kereszturi, Á., Paganelli, F. (2014). Radar Feature. In: Encyclopedia of Planetary Landforms. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-9213-9_290-1
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DOI: https://doi.org/10.1007/978-1-4614-9213-9_290-1
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