Microwave imaging of aircraft
Article Abstract:
The long wavelength of microwave radiation requires very large antennas for imaging targets. Three techniques for imaging aircraft from the ground using microwave radar with quality high enough for aircraft target recognition are described. All three are based on the adaptive beamforming (ABF) self-calibration procedure that makes allowances for the high level of geometric distortion resulting from any imaging system that is large enough to generate the high angular resolution required for two-dimensional target imaging. X-band wavelength experiments show the success of the signal processing algorithm presented on commercial aircraft flying into Philadelphia International Airport.
Publication Name: Proceedings of the IEEE
Subject: Electronics
ISSN: 0018-9219
Year: 1988
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Exact deconvolution for multiple convolution operators -- an overview, plus performance characterizations for imaging sensors
Article Abstract:
An updated review of the deconvolution of multiple convolution operators is presented. Physically realiable examples and explicit inverses are provided, as is a computer simulation of the resulting large bandwidth. The necessity of multiple operators is demonstrated, and a precise necessary and sufficient condition for invertibility is given. The performance of these simultaneous convolution operators in the presence of additive noise prior to the inverse is also addressed. A tutorial on the theory of distributions of compact support, used widely in the research, is provided in an appendix.
Publication Name: Proceedings of the IEEE
Subject: Electronics
ISSN: 0018-9219
Year: 1990
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Two-Dimensional Imaging with a Radio Camera
Article Abstract:
A thirty-nine meter, X-band radio camera recorded echoes from a microwave transmitter for nearly diffraction-limited images. Two different pilot signals or beam forming sources were used for the self-synchronozation process. A schematic of the experiment is given.
Publication Name: Proceedings of the IEEE
Subject: Electronics
ISSN: 0018-9219
Year: 1983
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