12 September 2003 A signature correlation study of ground target VHF/UHF ISAR imagery
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Proceedings Volume 5095, Algorithms for Synthetic Aperture Radar Imagery X; (2003); doi: 10.1117/12.487009
Event: AeroSense 2003, 2003, Orlando, Florida, United States
Abstract
VV and HH-polarized radar signatures of several ground targets were acquired in the VHF/UHF band (171-342 MHz) by using 1/35th scale models and an indoor radar range operating from 6 to 12 GHz. Data were processed into medianized radar cross sections as well as focused, ISAR imagery. Measurement validation was confirmed by comparing the radar cross section of a test object with a method of moments radar cross section prediction code. The signatures of several vehicles from three vehicle classes (tanks, trunks, and TELs) were measured and a signature cross-correlation study was performed. The VHF/UHF band is currently being exploited for its foliage penetration ability, however, the coarse image resolution which results from the relatively long radar wavelengths suggests a more challenging target recognition problem. One of the study's goals was to determine the amount of unique signature content in VHF/UHF ISAR imagery of military ground vehicles. Open-field signatures are compared with each other as well as with simplified shapes of similar size. Signatures were also acquired on one vehicle in a variety of configurations to determine the impact of monitor target variations on the signature content at these frequencies.
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Andrew J. Gatesman, Christopher J. Beaudoin, Robert H. Giles, William T. Kersey, Jerry Waldman, Steve Carter, William E. Nixon, "A signature correlation study of ground target VHF/UHF ISAR imagery", Proc. SPIE 5095, Algorithms for Synthetic Aperture Radar Imagery X, (12 September 2003); doi: 10.1117/12.487009; https://doi.org/10.1117/12.487009
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KEYWORDS
Radar

Target acquisition

Calibration

Image processing

Image resolution

Aluminum

Automatic target recognition

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