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Resolution for radar and x-ray tomography

Frank Natterer1, Margaret Cheney2 and Brett Borden3

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Radar imaging and x-ray computed tomography (CT) are both based on inverting the Radon transform. Yet radar imaging can make images from as little as two degrees of aperture while x-ray CT typically requires an aperture of at least 120°. Our discussion addresses this phenomenon.


PACS

84.40.Ua Telecommunications: signal transmission and processing; communication satellites

07.85.-m X- and γ-ray instruments

84.40.Xb Telemetry: remote control, remote sensing; radar

02.30.Uu Integral transforms

81.70.Tx Computed tomography

MSC

44A12 Radon transform (See also 92C55)

94A08 Image processing (compression, reconstruction, etc.) (See also 68U10)

Subjects

Mathematical physics

Electronics and devices

Instrumentation and measurement

Condensed matter: structural, mechanical & thermal

Dates

Issue 6 (December 2003)

Received 23 April 2003, in final form 2 July 2003

Published 12 November 2003



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