Active and passive millimeter and sub-millimeter-wave imaging
Abstract
We have developed several millimeter/submillimeter/terahertz systems to study active and passive imaging and associated phenomenology. For measuring the transmission and scattering properties of materials, we have developed a dual rotary stage scattering system with active illumination and a Fourier Transform spectrometer. For imaging studies, we have developed a system based on a 12-inch diameter raster-scanned mirror. By interchange of active sources and both heterodyne and bolometric detectors, this system can be used in a variety of active and passive configurations. The laboratory measurements are used as inputs for, and model calibration and validation of, a terahertz imaging system performance model used to evaluate different imaging modalities for concealed weapon identification. In this paper, we will present examples of transmission and scattering measurements for common clothing as well as active imaging results that used a 640 GHz source and receiver.
Publication Title
Proceedings of SPIE - The International Society for Optical Engineering
Recommended Citation
Petkie, D., De Lucia, F., Casto, C., Helminger, P., Jacobs, E., Moyer, S., Murrill, S., & Halford, C. (2005). Active and passive millimeter and sub-millimeter-wave imaging. Proceedings of SPIE - The International Society for Optical Engineering https://doi.org/10.1117/12.638982
