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arXiv · 1902.07935

Terahertz dynamic aperture imaging at stand-off distances using a Compressed Sensing protocol

Sven Augustin·Peter Jung·Sven Frohmann·Heinz-Wilhelm Huebers
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Abstract

In this text, results of a 0.35 terahertz (THz) dynamic aperture imaging approach are presented. The experiments use an optical modulation approach and a single pixel detector at a stand-off imaging distance of approx 1 meter. The optical modulation creates dynamic apertures of 5cm diameter with approx 2000 individually controllable elements. An optical modulation approach is used here for the first time at a large far-field distance, for the investigation of various test targets in a field-of-view of 8 x 8 cm. The results highlight the versatility of this modulation technique and show that this imaging paradigm is applicable even at large far-field distances. It proves the feasibility of this imaging approach for potential applications like stand-off security imaging or far field THz microscopy.

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Sven Augustin, Peter Jung, Sven Frohmann, Heinz-Wilhelm Huebers. 2019-02-21. Terahertz dynamic aperture imaging at stand-off distances using a Compressed Sensing protocol. https://arxiv.org/abs/1902.07935

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