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612-822-4611
Wide-Angle Multistatic Synthetic Aperture Radar

Wide-Angle Multistatic Synthetic Aperture Radar

Paperback

Technology & Engineering

ISBN10: 1025140400
ISBN13: 9781025140407
Publisher: Hutson Street Press
Published: May 22 2025
Pages: 372
Weight: 1.15
Height: 0.77 Width: 6.14 Depth: 9.21
Language: English

Traditional monostatic Synthetic Aperture Radar (SAR) platforms force the user to choose between two image types: larger, low resolution images or smaller, high resolution images. Switching to a Wide-Angle Multistatic Synthetic Aperture Radar (WAM-SAR) approach allows formation of large high-resolution images. Unfortunately, WAM-SAR suffers from two significant implementation problems. First, wavefront curvature effects, non-linear flight paths, and warped ground planes lead to image defocusing with traditional SAR processing methods. A new 3-D monostatic/bistatic image formation routine solves the defocusing problem, correcting for all relevant wide-angle effects. Inverse SAR (ISAR) imagery from a Radar Cross Section (RCS) chamber validates this approach. The second implementation problem stems from the large Doppler spread in the wide-angle scene, leading to severe aliasing problems. This research effort develops a new anti-aliasing technique using randomized Stepped-Frequency (SF) waveforms to form Doppler filter nulls coinciding with aliasing artifact locations. Both simulation and laboratory results demonstrate effective performance, eliminating more than 99% of the aliased energy.

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Luminati, Jonathan E.

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Technology & Engineering