Design and testing of an active 190-GHz millimeter-wave imager

Timms, Greg

doi:10.1117/1.3514744

Cited by 5 publications

(1 citation statement)

References 15 publications

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“…The use of advanced radar imaging techniques, such as synthetic aperture radar (SAR) and inverse synthetic aperture radar (ISAR), is being adapted from the radio frequency (RF) and microwave (MW) into the millimeter-wave (mmw) and terahertz (THz) spectral regions [1][2][3][4][5][6][7][8][9][10]. The high-fidelity images produced by these techniques at high frequencies have vindicated the high expectations for applications ranging from non-destructive testing and seeing through obscurants to terrain mapping and navigation assistance.…”

Section: Introductionmentioning

confidence: 99%

Wide bandwidth, millimeter-resolution inverse synthetic aperture radar imaging

Richard

Heimbeck²,

Autin

et al. 2017

J. Opt. Soc. Am. A

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The combination of wide bandwidth W-band inverse synthetic aperture radar imagery and high-fidelity numerical simulations has been used to identify distinguishing signatures from simple metallic and dielectric targets. Targets are located with millimeter-scale accuracy using super-resolution techniques. Radon transform reconstructions of the returns from rotated targets approached the image quality of the complete data set in a fraction of the time by sampling as few as 10 angles. The limitations of shooting-and-bouncing ray simulations at high frequencies are illustrated through a critical comparison of their predictions with the measured data and the method of moments simulations, indicating the importance of accurately capturing the obfuscating role played by multipath interference in complex targets.

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