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An information theory characterization of radar images and a new definition for radiometric resolutionThe noise properties of the radar image formation process are used in the present modeling of a communication channel in which the desired target properties are the information transmitted, and the final image represents the received signal. The average information rate over this communication channel is calculated together with appropriate bounds and approximations, and is found to be small on a per-sample basis. As a result, many samples must be averaged to allow for the discrimination, or classification, of several levels of target reflectivity. These information rate properties are consistent with known results concerning target detection and image quality in speckle, and the rate is applicable to the definition of radar image radiometric resolution. Radiometric resolution is functionally related to the degree of noncoherent averaging performed by the sensor.
Document ID
19830064976
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Frost, V. S.
(Kansas Univ. Center for Research, Inc. Lawrence, KS, United States)
Shanmugan, K. S.
(Kansas Univ. Center for Research, Inc. Lawrence, KS, United States)
Holtzman, J. C.
(University of Kansas Center for Research, Inc., Lawrence KS, United States)
Date Acquired
August 11, 2013
Publication Date
January 1, 1982
Subject Category
Instrumentation And Photography
Meeting Information
Meeting: 1982 International Geoscience and Remote Sensing Symposium
Location: Munich
Start Date: June 1, 1982
End Date: June 4, 1982
Accession Number
83A46194
Funding Number(s)
CONTRACT_GRANT: NAG9-3
Distribution Limits
Public
Copyright
Other

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