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Proceedings Paper

Radar imaging using ultrawideband stochastic waveforms
Author(s): Daryl C. Bell; Ram Mohan Narayanan
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Paper Abstract

The University of Nebraska-Lincoln has developed an ultra- wideband random noise radar operating over the 1-2 GHz frequency range. The system uses the technique of heterodyne correlation, and is thus phase-coherent. It has therefore been used in applications such as interferometry, polarimetry, and Doppler estimation. Recently, the system has been used for SAR and ISAR imaging of targets and terrain. This work has brought to the forefront various issues, such as the type of images obtained when utilizing a truly stochastic signal as a transmit waveform, and the techniques employed to realize this image. The natural answer to the first question is that the image obtained is based upon the expected value of the return signals, in the probabilistic sense of the word. This leads to answering the second question by determining what sort of estimators one would use to estimate this expected value. In this work, we will discuss the expected value of the image and its properties. We will then examine single look ISAR images collected in anechoic chamber experiments performed at the University of Nebraska-Lincoln.

Paper Details

Date Published: 16 November 2000
PDF: 12 pages
Proc. SPIE 4123, Image Reconstruction from Incomplete Data, (16 November 2000); doi: 10.1117/12.409257
Show Author Affiliations
Daryl C. Bell, Univ. of Nebraska/Lincoln (United States)
Ram Mohan Narayanan, Univ. of Nebraska/Lincoln (United States)


Published in SPIE Proceedings Vol. 4123:
Image Reconstruction from Incomplete Data
Michael A. Fiddy; Rick P. Millane, Editor(s)

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