(DURIP) THZ IMAGING INSTRUMENTATION FOR AIR-FORCE AUTOMATIC TARGET RECOGNITION
Abstract
This DURIP Proposal concerns a new investigation of THz radiation in a fundamental research area, which is the electromagnetic interaction with rough surfaces, particularly rough metallic interfaces and convoluted objects. Of specific interest, and supported by Air Force interest, is scale-model targets that provide accurate representation of real targets in X band (8 – 12 GHz), where synthetic aperture radar (SAR) is most effective. To support this interest, our research will provide inverse synthetic aperture radar (ISAR) imagery of the rough, scaled-model radar targets, which brings demanding requirements in terms of amplitude and phase accuracy of the measurements, along with excellent beam quality and target registration. To meet these requirements, we request two baseline instruments: (1) a frequency-extended vector network analyzer operating in the 500 – 750 GHz band, and (2) a Gaussian-beam test fixture that allows “quasi-plane-wave” measurement of both complex reflectivity and transmissivity through freespace coupled materials and quasi-optical components over full hemispheres and with high levels of accuracy.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Apr 20, 2023
- Source ID
- FA95502210479
Entities
People
- Elliott Brown
Organizations
- Air Force Office of Scientific Research
- United States Air Force
- Wright State University