Dr. Robert H. Giles Profile

Dr. Robert H. Giles

Professor Emeritus & Director of BTTC Lab. at Univ of Massachusetts Lowell

SPIE Involvement:

Conference Program Committee | Author

Publications (63)

Proceedings Article | 7 March 2022 Presentation

Millimeter-wave radar patient motion tracking technologies for medical imaging applications

Michele Woodland, Shanice Kelly, C. Abell, Clifford Lindsay, Cecil Joseph, Robert Giles

Proceedings Volume PC12000, PC120000D (2022) https://doi.org/10.1117/12.2616740

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Proceedings Article | 5 March 2021 Presentation

Millimeter-wave radar imaging of wind turbine blades

S. Kelly, M. Woodland, Robert Giles

Proceedings Volume 11685, 1168510 (2021) https://doi.org/10.1117/12.2591169

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Proceedings Article | 10 March 2020 Presentation

Terahertz spectral characterization of NIR nanomaterials (Conference Presentation)

Robert Giles, Jillian Martin, Emmanouil Gkikas, Cecil Joseph

Proceedings Volume 11279, 112790B (2020) https://doi.org/10.1117/12.2551457

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Proceedings Article | 5 March 2019 Presentation

Biomedical applications of terahertz technologies (Conference Presentation)

Cecil Joseph, Clifford Lindsay, Michael King, Robert Giles

Proceedings Volume 10917, 109171G (2019) https://doi.org/10.1117/12.2513610

KEYWORDS: Scattering, Calibration, Backscatter, Radar, Transceivers

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Proceedings Article | 1 March 2019 Paper

Investigation of the transmission measurements of different clothing types at sub-terahertz for reflection imaging

Clifford Lindsay, Cecil Joseph, Michael King, Robert Giles

Proceedings Volume 10917, 109172C (2019) https://doi.org/10.1117/12.2513616

KEYWORDS: Signal attenuation, Imaging systems, Image sensors, Imaging arrays, Sensors, Cameras, Diodes, Image transmission, Point spread functions, Reflection

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SPIE Journal Paper | 14 July 2016 Open Access

Continuous-wave circular polarization terahertz imaging

Jillian Martin, Cecil Joseph, Robert Giles

JBO, Vol. 21, Issue 07, 070502, (July 2016) https://doi.org/10.1117/12.10.1117/1.JBO.21.7.070502

KEYWORDS: Terahertz radiation, Tissues, Tissue optics, Tumors, Reflectivity, Skin, Continuous wave operation, Polarization, Signal detection, Interfaces

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Proceedings Article | 2 May 2016 Paper

Development of terahertz endoscopic system for cancer detection

Pallavi Doradla, Karim Alavi, Cecil Joseph, Robert Giles

Proceedings Volume 9747, 97470F (2016) https://doi.org/10.1117/12.2209404

KEYWORDS: Endoscopy, Terahertz radiation, Imaging systems, Cancer, Tissues, Endoscopes, Waveguides, Polarization, Millimeter wave sensors, Astronomy, Reflectivity, Colon, Silver, Wave propagation

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Proceedings Article | 1 April 2016 Paper

Terahertz ISAR and x-ray imaging of wind turbine blade structures

Robert Martin, Christopher Baird, Robert Giles, Christopher Niezrecki

Proceedings Volume 9806, 98060I (2016) https://doi.org/10.1117/12.2218616

KEYWORDS: Nondestructive evaluation, Radar, X-rays, X-ray imaging, Manufacturing, Polarimetry, Defect detection, Composites, Synthetic aperture radar, Wind turbine technology, Terahertz radiation, Polarization, Photography, Scattering

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Proceedings Article | 19 May 2015 Paper

Electromagnetic scattering from dielectric surfaces at millimeter wave and terahertz frequencies

D. DiGiovanni, A. Gatesman, R. Giles, T. Goyette, W. Nixon

Proceedings Volume 9462, 94620H (2015) https://doi.org/10.1117/12.2179707

KEYWORDS: Dielectrics, Backscatter, Terahertz radiation, Scattering, Reflectivity, Extremely high frequency, Transmittance, Dielectric polarization, Carbon, Electromagnetic scattering

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Proceedings Article | 13 May 2015 Paper

Phase characteristics of subwavelength antenna elements for efficient design of terahertz frequency and millimeter wave metasurfaces

Richard Williams, Andrew Gatesman, Robert Giles, William Nixon

Proceedings Volume 9483, 94830H (2015) https://doi.org/10.1117/12.2182582

KEYWORDS: Reflection, Resonators, Data modeling, Antennas, Numerical simulations, Metamaterials, Refraction, Infrared radiation, Extremely high frequency, Thermal modeling

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Proceedings Article | 13 May 2015 Paper

Experimental determination of terahertz atmospheric absorption parameters

David Slocum, Thomas Goyette, Robert Giles, William Nixon

Proceedings Volume 9483, 94830O (2015) https://doi.org/10.1117/12.2176455

KEYWORDS: Absorption, Databases, Transmittance, Atmospheric monitoring, Molecules, Receivers, Atmospheric propagation, Data modeling, Data acquisition, Radio frequency circuits

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Proceedings Article | 28 April 2015 Paper

Flexible waveguide enabled single-channel terahertz endoscopic system

Pallavi Doradla, Karim Alavi, Cecil Joseph, Robert Giles

Proceedings Volume 9362, 93620D (2015) https://doi.org/10.1117/12.2079417

KEYWORDS: Terahertz radiation, Tissues, Endoscopy, Reflectivity, Waveguides, Colorectal cancer, Cancer, Imaging systems, Millimeter wave imaging, Signal detection

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SPIE Journal Paper | 11 August 2014 Open Access

Single-channel prototype terahertz endoscopic system

Pallavi Doradla, Karim Alavi, Cecil Joseph, Robert Giles

JBO, Vol. 19, Issue 08, 080501, (August 2014) https://doi.org/10.1117/12.10.1117/1.JBO.19.8.080501

KEYWORDS: Terahertz radiation, Endoscopy, Tissues, Waveguides, Reflectivity, Prototyping, Imaging systems, Image transmission, Polarization, Signal detection

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Proceedings Article | 9 June 2014 Paper

Surface and volumetric backscattering between 100 GHz and 1.6 THz

D. DiGiovanni, Andrew Gatesman, T. Goyette, R. Giles

Proceedings Volume 9078, 90780A (2014) https://doi.org/10.1117/12.2051772

KEYWORDS: Dielectrics, Backscatter, Scattering, Aluminum, Terahertz radiation, Metals, Dielectric polarization, Reflectivity, Carbon, Transmittance

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Proceedings Article | 21 May 2014 Paper

High-resolution terahertz atmospheric water vapor continuum measurements

David Slocum, Thomas Goyette, Robert Giles

Proceedings Volume 9102, 91020E (2014) https://doi.org/10.1117/12.2051542

KEYWORDS: Absorption, Fourier transforms, Mathematics, Cesium, Atmospheric monitoring, Spectroscopy, Atmospheric modeling, Receivers, Error analysis, Fourier spectroscopy

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Proceedings Article | 21 May 2014 Paper

Radar cross section measurements of frequency selective terahertz retroreflectors

Richard Williams, Andrew Gatesman, Thomas Goyette, Robert Giles

Proceedings Volume 9102, 91020R (2014) https://doi.org/10.1117/12.2051802

KEYWORDS: Retroreflectors, Backscatter, Reflectors, Spherical lenses, Radar, Optical spheres, Reflectivity, Bandpass filters, FSS based metamaterials, Dielectrics

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Proceedings Article | 7 March 2014 Paper

Dual-frequency characterization of bending loss in hollow flexible terahertz waveguides

Pallavi Doradla, Robert Giles

Proceedings Volume 8985, 898518 (2014) https://doi.org/10.1117/12.2038596

KEYWORDS: Waveguides, Terahertz radiation, Silver, Signal attenuation, Wave propagation, Coating, Metals, Gold, Dielectrics, Neodymium

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Proceedings Article | 7 March 2014 Paper

Terahertz polarization imaging for colon cancer detection

Pallavi Doradla, Karim Alavi, Cecil Joseph, Robert Giles

Proceedings Volume 8985, 89850K (2014) https://doi.org/10.1117/12.2038650

KEYWORDS: Tissues, Terahertz radiation, Colon, Reflectivity, Colorectal cancer, Polarization, Interfaces, Neodymium, Tumors, Cancer

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SPIE Journal Paper | 25 September 2013 Open Access

Detection of colon cancer by continuous-wave terahertz polarization imaging technique

Pallavi Doradla, Karim Alavi, Cecil Joseph, Robert Giles

JBO, Vol. 18, Issue 09, 090504, (September 2013) https://doi.org/10.1117/12.10.1117/1.JBO.18.9.090504

KEYWORDS: Tissues, Terahertz radiation, Reflectivity, Colon, Colorectal cancer, Polarization, Continuous wave operation, Imaging systems, Tumors, Refractive index

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Proceedings Article | 31 May 2013 Paper

Terahertz atmospheric attenuation and continuum effects

David Slocum, Thomas Goyette, Elizabeth Slingerland, Robert Giles, William Nixon

Proceedings Volume 8716, 871607 (2013) https://doi.org/10.1117/12.2015471

KEYWORDS: Absorption, Humidity, Distortion, Data modeling, Signal attenuation, Terahertz radiation, Databases, Fourier transforms, Atmospheric propagation, Remote sensing

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Proceedings Article | 31 May 2013 Paper

Backscattering of ground terrain and building materials at submillimeter-wave and terahertz frequencies

D. DiGiovanni, A. Gatesman, R. Giles, W. Nixon

Proceedings Volume 8715, 871507 (2013) https://doi.org/10.1117/12.2015772

KEYWORDS: Soil science, Backscatter, Radar, Scattering, Terahertz radiation, Dielectrics, Profilometers, Surface roughness, Electromagnetic scattering, Polarimetry

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Proceedings Article | 27 March 2013 Paper

Continuous wave terahertz reflection imaging of human colorectal tissue

Pallavi Doradla, Karim Alavi, Cecil Joseph, Robert Giles

Proceedings Volume 8624, 86240O (2013) https://doi.org/10.1117/12.2004385

KEYWORDS: Tissues, Terahertz radiation, Colon, Reflectivity, Tissue optics, Imaging systems, Sensors, Colorectal cancer, Refractive index, Digital photography

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Proceedings Article | 2 March 2012 Paper

Continuous-wave terahertz reflection imaging of ex vivo nonmelanoma skin cancers

Cecil Joseph, Anna Yaroslavsky, Victor Neel, Thomas Goyette, Robert Giles

Proceedings Volume 8261, 82610X (2012) https://doi.org/10.1117/12.909135

KEYWORDS: Skin cancer, Tissues, Millimeter wave imaging, Skin, Imaging systems, Reflectivity, Carbon dioxide lasers, Cancer, Continuous wave operation, Terahertz radiation

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Proceedings Article | 1 March 2012 Paper

Long-term frequency and amplitude stability of a solid-nitrogen-cooled, continuous wave THz quantum cascade laser

Andriy Danylov, Jerry Waldman, Alexander Light, Thomas Goyette, Robert Giles, Xifeng Qian, Neelima Chandrayan, William Goodhue, William Nixon

Proceedings Volume 8261, 82610D (2012) https://doi.org/10.1117/12.911948

KEYWORDS: Quantum cascade lasers, Terahertz radiation, Nitrogen, Temperature metrology, Continuous wave operation, Solids, Diodes, Liquids, Heterodyning, Receivers

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Proceedings Article | 28 February 2012 Paper

Propagation loss optimization in metal/dielectric coated hollow flexible terahertz waveguides

Pallavi Doradla, Cecil Joseph, Jayant Kumar, Robert Giles

Proceedings Volume 8261, 82610P (2012) https://doi.org/10.1117/12.906833

KEYWORDS: Waveguides, Terahertz radiation, Silver, Metals, Wave propagation, Gold, Dielectrics, Signal attenuation, Refractive index, Neodymium

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Proceedings Article | 28 February 2012 Paper

One-half milliwatt 2.31 THz continuous-wave QCL operating at 77K

Xifeng Qian, Neelima Chandrayan, Shivashankar Vangala, William Goodhue, Andriy Danylov, Jerry Waldman, Christopher Baird, Robert Giles, William Nixon

Proceedings Volume 8261, 82610K (2012) https://doi.org/10.1117/12.906732

KEYWORDS: Terahertz radiation, Waveguides, Metals, Quantum cascade lasers, Continuous wave operation, Annealing, Liquids, Heterodyning, Surface plasmons

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Proceedings Article | 9 February 2012 Paper

Investigating the effects of terahertz radiation on Bacillus subtilis

Jillian Giles, Brittany Raitt, Cecil Joseph, Mark Hines, Robert Giles

Proceedings Volume 8222, 822213 (2012) https://doi.org/10.1117/12.910724

KEYWORDS: Terahertz radiation, Radiation effects, Absorbance, Absorption, Standards development, Safety, Optical design, Biomedical optics, Oscillators, Bacteria

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Proceedings Article | 19 May 2011 Paper

A comparison of machine learning methods for target recognition using ISAR imagery

Karen Uttecht, Cindy Chen, Jason Dickinson, Thomas Goyette, Robert Giles, William Nixon

Proceedings Volume 8049, 804913 (2011) https://doi.org/10.1117/12.890228

KEYWORDS: Machine learning, Data modeling, Target recognition, Automatic target recognition, Radar, Error analysis, X band, Algorithm development, Source mask optimization, Detection and tracking algorithms

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Proceedings Article | 24 February 2011 Paper

New experimental methods in terahertz spectroscopy

E. Slingerland, T. Goyette, R. Giles, W. Nixon

Proceedings Volume 7938, 793803 (2011) https://doi.org/10.1117/12.873290

KEYWORDS: Absorption, FT-IR spectroscopy, Spectroscopy, Far infrared lasers, Molecules, Terahertz radiation, Semiconductor lasers, Carbon dioxide lasers, Diodes, Sensors

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Proceedings Article | 24 February 2011 Paper

The effects of various approximations on electron-electron scattering calculations in QCLs

Philip Slingerland, Christopher Baird, Robert Giles

Proceedings Volume 7938, 793809 (2011) https://doi.org/10.1117/12.873292

KEYWORDS: Scattering, Quantum cascade lasers, Nickel, Laser scattering, Quantum wells, Phonons, Heterojunctions, Electron transport, Terahertz radiation, Semiconductors

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Proceedings Article | 1 May 2010 Paper

The effects of electron temperature in terahertz quantum cascade laser predictions

Philip Slingerland, Christopher Baird, Bryan Crompton, Robert Giles, William Nixon

Proceedings Volume 7705, 77050C (2010) https://doi.org/10.1117/12.855703

KEYWORDS: Tellurium, Quantum cascade lasers, Scattering, Thallium, Phonons, Mid-IR, Electron transport, Epitaxial lateral overgrowth, Optical simulations, Laser scattering

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Proceedings Article | 27 April 2010 Paper

Optimization of semi-insulating surface-plasmon waveguides within terahertz QCL's using computational models

Christopher Baird, Bryan Crompton, Philip Slingerland, Robert Giles, William Nixon

Proceedings Volume 7671, 767109 (2010) https://doi.org/10.1117/12.855819

KEYWORDS: Waveguides, Terahertz radiation, Quantum cascade lasers, Optimization (mathematics), Defense and security, Physics, Current controlled current source, Semiconductors, Heterojunctions, Medical imaging

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Proceedings Article | 27 April 2010 Paper

Effect of periodic roughness and surface defects on the terahertz scattering behavior of cylindrical objects

A. Jagannathan, A. Gatesman, T. Horgan, T. Goyette, M. Coulombe, R. Giles, W. Nixon

Proceedings Volume 7671, 76710E (2010) https://doi.org/10.1117/12.852909

KEYWORDS: Scattering, Radium, Solids, Polishing, Terahertz radiation, Aluminum, Dielectrics, Radar, Surface finishing, Metals

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Proceedings Article | 27 April 2010 Paper

Terahertz absorption spectra of highly energetic chemicals

E. Slingerland, M. Vallon, E. G. Jahngen, R. Giles, T. Goyette

Proceedings Volume 7671, 76710A (2010) https://doi.org/10.1117/12.848934

KEYWORDS: Absorption, Molecules, Black bodies, FT-IR spectroscopy, Sensors, Remote sensing, Spectroscopy, Terahertz radiation, Atmospheric sensing, Humidity

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Proceedings Article | 27 April 2010 Paper

Design and fabrication of hollow flexible terahertz waveguides

N. Arunkumar, R. Giles, T. Goyette, J. Kumar, W. Nixon

Proceedings Volume 7671, 76710S (2010) https://doi.org/10.1117/12.863374

KEYWORDS: Waveguides, Silver, Metals, Terahertz radiation, Dielectrics, Signal attenuation, Refractive index, Wave propagation, Reflectivity, Free space

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Proceedings Article | 5 March 2010 Paper

Dual-frequency continuous-wave terahertz transmission imaging of nonmelanoma skin cancers

Cecil Joseph, Anna Yaroslavsky, Julie Lagraves, Thomas Goyette, Robert Giles

Proceedings Volume 7601, 760104 (2010) https://doi.org/10.1117/12.842018

KEYWORDS: Terahertz radiation, Skin cancer, Tissues, Millimeter wave imaging, Signal detection, Skin, Carbon dioxide lasers, Liquids, Spatial resolution, Continuous wave operation

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Proceedings Article | 19 February 2010 Paper

Coherent imaging at 2.4 THz with a CW quantum cascade laser transmitter

Andriy Danylov, Thomas Goyette, Jerry Waldman, Michael Coulombe, Andrew Gatesman, Robert Giles, Xifeng Qian, Neelima Chandrayan, Shivashankar Vangala, Krongtip Termkoa, William Goodhue, William Nixon

Proceedings Volume 7601, 760105 (2010) https://doi.org/10.1117/12.843197

KEYWORDS: Terahertz radiation, Transmitters, Quantum cascade lasers, Coherence imaging, Receivers, Transceivers, Radar, Molecular lasers, Diodes, Spherical lenses

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Proceedings Article | 12 February 2009 Paper

Prospects for quantum cascade lasers as transmitters and local oscillators in coherent terahertz transmitter/receiver systems

Jerry Waldman, Andriy Danylov, Thomas Goyette, Michael Coulombe, Robert Giles, Andrew Gatesman, William Goodhue, Jin Li, Kurt Linden, William Nixon

Proceedings Volume 7215, 72150C (2009) https://doi.org/10.1117/12.808009

KEYWORDS: Terahertz radiation, Quantum cascade lasers, Transmitters, Radar, Diodes, Transceivers, Microwave radiation, Waveguides, Receivers, Signal processing

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Proceedings Article | 9 February 2009 Paper

Terahertz spectroscopy of intrinsic biomarkers for non-melanoma skin cancer

Cecil Joseph, Anna Yaroslavsky, Munir Al-Arashi, Thomas Goyette, Jason Dickinson, Andrew Gatesman, Brian Soper, Christopher Forgione, Thomas Horgan, Elizabeth Ehasz, Robert Giles, William Nixon

Proceedings Volume 7215, 72150I (2009) https://doi.org/10.1117/12.809402

KEYWORDS: Terahertz radiation, Absorption, Imaging systems, Millimeter wave imaging, Skin cancer, Liquids, Signal to noise ratio, Skin, Terahertz spectroscopy, Transmittance

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Proceedings Article | 4 September 2008 Paper

Negative index of refraction microwave frequency structures based on high permittivity inclusions and effective medium theory

James Cramer, Andrew Gatesman, Robert Giles, William Nixon

Proceedings Volume 7029, 70290G (2008) https://doi.org/10.1117/12.797079

KEYWORDS: Optical spheres, Copper, Metamaterials, Microwave radiation, Waveguides, Refraction, Refractive index, Dielectrics, Composites, Plasma

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Proceedings Article | 14 February 2008 Paper

1.56 Terahertz 2-frames per second standoff imaging

Thomas Goyette, Jason Dickinson, Kurt Linden, William Neal, Cecil Joseph, William Gorveatt, Jerry Waldman, Robert Giles, William Nixon

Proceedings Volume 6893, 68930J (2008) https://doi.org/10.1117/12.764672

KEYWORDS: Mirrors, Terahertz radiation, Scanners, Imaging systems, Diodes, Receivers, Video, Transmitters, Human subjects, Optical design

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Proceedings Article | 3 May 2007 Paper

Development and assessment of a complete ATR algorithm based on ISAR Euler imagery

C. Baird, R. Giles, W. Nixon

Proceedings Volume 6547, 65470N (2007) https://doi.org/10.1117/12.724457

KEYWORDS: Automatic target recognition, Scattering, Algorithm development, Detection and tracking algorithms, Target recognition, Radar, Avalanche photodetectors, Polarization, Polarimetry, Reflectivity

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Proceedings Article | 19 May 2006 Paper

Terahertz behavior of optical components and common materials

Andrew Gatesman, Andriy Danylov, Thomas Goyette, Jason Dickinson, Robert Giles, William Goodhue, Jerry Waldman, William Nixon, Weber Hoen

Proceedings Volume 6212, 62120E (2006) https://doi.org/10.1117/12.668384

KEYWORDS: Terahertz radiation, Transmittance, Dielectrics, Reflectivity, Optical filters, Gas lasers, Signal attenuation, Radar, Output couplers, Optical components

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Proceedings Article | 19 May 2006 Paper

Terahertz imaging of subjects with concealed weapons

Jason Dickinson, Thomas Goyette, Andrew Gatesman, Cecil Joseph, Zachary Root, Robert Giles, Jerry Waldman, William Nixon

Proceedings Volume 6212, 62120Q (2006) https://doi.org/10.1117/12.667998

KEYWORDS: Weapons, Scanners, Radar, Terahertz radiation, Prototyping, Human subjects, Image processing, Transceivers, Image resolution, Receivers

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Proceedings Article | 17 May 2006 Paper

A comparison of fully polarimetric X-band ISAR imagery of scaled model tactical targets

Thomas Goyette, Jason Dickinson, Robert Giles, Jerry Waldman, William Nixon

Proceedings Volume 6237, 62370F (2006) https://doi.org/10.1117/12.666771

KEYWORDS: Data modeling, Radar, X band, Avalanche photodetectors, Polarimetry, Instrument modeling, Systems modeling, Image analysis, Image resolution, Scattering

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Proceedings Article | 17 May 2006 Paper

A 3D polar processing algorithm for scale model UHF ISAR imaging

Christopher Beaudoin, Andrew Gatesman, Robert Giles, Jerry Waldman, William Nixon

Proceedings Volume 6237, 62370A (2006) https://doi.org/10.1117/12.666617

KEYWORDS: Radar, 3D image processing, 3D acquisition, 3D modeling, Synthetic aperture radar, Data modeling, Image processing, Scattering, Image resolution, Microwave radiation

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Proceedings Article | 8 May 2006 Paper

Classification of targets using optimized ISAR Euler imagery

C. Baird, W. Kersey, R. Giles, W. Nixon

Proceedings Volume 6210, 62100A (2006) https://doi.org/10.1117/12.664964

KEYWORDS: Scattering, Image resolution, Image classification, Radar, Matrices, Polarimetry, Reflectivity, Terahertz technology, Ka band, Polarizability

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Proceedings Article | 19 May 2005 Paper

Polarimetric backscattering behavior of ground clutter at X, Ka, and W-band

A. Gatesman, T. Goyette, J. Dickinson, R. Giles, J. Waldman, J. Sizemore, R. Chase, W. Nixon

Proceedings Volume 5808, (2005) https://doi.org/10.1117/12.604765

KEYWORDS: Backscatter, Radar, Reflectivity, Dielectrics, X band, Ka band, Soil science, Data modeling, Dielectric polarization, Image resolution

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Proceedings Article | 19 May 2005 Paper

Acquisition of UHF and X-band ISAR imagery using 1/35th scale models

Thomas Goyette, Jason Dickinson, Christopher Beaudoin, Andrew Gatesman, Robert Giles, Jerry Waldman, William Nixon

Proceedings Volume 5808, (2005) https://doi.org/10.1117/12.604762

KEYWORDS: Radar, Target detection, X band, Data modeling, Diodes, Transmitters, Receivers, Transceivers, Target recognition, Systems modeling

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Proceedings Article | 16 May 2005 Paper

Exploitation of ISAR imagery in Euler parameter space

C. Baird, W. Kersey, R. Giles, W. Nixon

Proceedings Volume 5788, (2005) https://doi.org/10.1117/12.604844

KEYWORDS: Scattering, Polarimetry, Radar sensor technology, Radar

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Proceedings Article | 12 September 2003 Paper

A signature correlation study of ground target VHF/UHF ISAR imagery

Andrew Gatesman, Christopher Beaudoin, Robert Giles, William Kersey, Jerry Waldman, Steve Carter, William Nixon

Proceedings Volume 5095, (2003) https://doi.org/10.1117/12.487009

KEYWORDS: Radar, Target acquisition, Calibration, Image processing, Image resolution, Aluminum, Target recognition, Automatic target recognition, Polarimetry, Dielectrics

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Proceedings Article | 23 December 2002 Paper

Foliage-penetrating radar imaging system

Christopher Beaudoin, Andrew Gatesman, Robert Giles, Jerry Waldman, Markus Testorf, Michael Fiddy, William Nixon

Proceedings Volume 4792, (2002) https://doi.org/10.1117/12.452400

KEYWORDS: Radar, Image processing, Scattering, Calibration, Dielectric polarization, Dielectrics, Imaging systems, Automatic target recognition, Data modeling, Target detection

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Proceedings Article | 6 August 2002 Paper

X-band radar signature characteristics for main battle tanks in operational environments

Robert Giles, William Kersey, Andrew Gatesman, Michael Coulombe, M.Shane McFarlin, Robbin Finley, William Nixon

Proceedings Volume 4718, (2002) https://doi.org/10.1117/12.478820

KEYWORDS: Radar, X band, Avalanche photodetectors, Automatic target recognition, Time multiplexed optical shutter, Ka band, Environmental sensing, Detection and tracking algorithms, Data acquisition, Target recognition

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Proceedings Article | 1 August 2002 Paper

Analysis of fully polarimetric W-band ISAR imagery on seven-scale model main battle tanks for use in target recognition

Thomas Goyette, Jason Dickinson, Robert Giles, William Kersey, Jerry Waldman, William Nixon

Proceedings Volume 4727, (2002) https://doi.org/10.1117/12.478680

KEYWORDS: Data modeling, Radar, Polarimetry, Target recognition, Polarization, Detection and tracking algorithms, Free space, Diodes, Carbon dioxide lasers, Image acquisition

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Proceedings Article | 1 August 2002 Paper

VHF/UHF imagery and RCS measurements of ground targets in forested terrain

Andrew Gatesman, Christopher Beaudoin, Robert Giles, Jerry Waldman, William Nixon

Proceedings Volume 4727, (2002) https://doi.org/10.1117/12.478698

KEYWORDS: Radar, X band, Dielectrics, Target acquisition, Image processing, Fourier transforms, Calibration, Systems modeling, Target detection, Data modeling

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Proceedings Article | 22 October 2001 Paper

Acquisition and analysis of X-band moving target signature data using a 160-GHz compact range

Robert Giles, H. Neilson, Dennis Healy, Timothy Grayson, Robert Williams, William Nixon

Proceedings Volume 4379, (2001) https://doi.org/10.1117/12.445372

KEYWORDS: Doppler effect, Target acquisition, Radar, Scattering, Data acquisition, X band, Polarimetry, Data modeling, Image resolution, Dielectrics

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Proceedings Article | 16 August 2001 Paper

Target variability and exact signature reproduction requirements for Ka-band radar data

Robert Giles, William Kersey, M.Shane McFarlin, Robbin Finley, H. Neilson, William Nixon

Proceedings Volume 4380, (2001) https://doi.org/10.1117/12.436941

KEYWORDS: Ka band, Radar, Free space, Data acquisition, Avalanche photodetectors, Time multiplexed optical shutter, Automatic target recognition, Detection and tracking algorithms, Analytical research, Data centers

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A variety of ATR algorithms have promise improved performance, not yet realized operationally. Typically, good results have been reported on data sets of limited size that have been tested in a laboratory environment, only to see the performance degrade when stressed with real-world target and environmental variability. To investigate exact signature reproduction requirements along with target and environment variability issues for stressing new ATR metrics, the U.S. Army's National Ground Intelligence Center (NGIC) and Targets Management Office (TMO) originated, sponsored, and directed a signature project plan to acquire multiple target full-polarimetric Ka-band radar signature data at Eglin AFB, as well as its submillimeter-wave compact radar range equivalent using high-fidelity exact 1/16th scale replicas fabricated by the ERADS program. To effectively understand signature reproduction requirements through the variability of multiple target RCS characteristics, TMO and NGIC sponsored researchers at U Mass Lowell's Submillimeter-Wave Technology Laboratory (STL) and Simulation Technologies (SimTech) to analyze the intra- class and inter-class variability of the full scale Ka-band turntable signature data. NGIC, TMO, STL and SimTech researchers then traveled to the location of the vehicles measured at Eglin AFB and conducted extensive documentation and mensuration on these vehicles. Using this information, ERADS built high fidelity, articulatable exact replicas for measurement in the NGIC's compact radar ranges. Signal processing software established by STL researchers in an NGIC directed signature study was used to execute an HRR and ISAR cross-correlation study of the field and scale-model signature data. The signature to signature variability quantified is presented, along with a description and examples of the signature analysis techniques exploited. This signature data is available from NGIC on request for Government Agencies and Government Contractors with an established need-to-know.

Proceedings Article | 16 November 2000 Paper

Detecting 1/10th scaled structures in dielectric media using monostatic X-band radar scattering measurements

John Kekis, Markus Testorf, Michael Fiddy, Robert Giles

Proceedings Volume 4123, (2000) https://doi.org/10.1117/12.409277

KEYWORDS: Mining, Radar, Optical spheres, Dielectrics, X band, Scattering, Calibration, Network security, Super resolution, Scatter measurement

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Proceedings Article | 17 August 2000 Paper

Multiple-resolution study of Ka-band HRR polarimetric signature data

Robert Giles, William Kersey, M.Shane McFarlin, Bobby Woodruff, Robbin Finley, William Nixon

Proceedings Volume 4050, (2000) https://doi.org/10.1117/12.395586

KEYWORDS: Radar, Reflectors, Data acquisition, Ka band, Polarimetry, Image resolution, Detection and tracking algorithms, Avalanche photodetectors, Automatic target recognition, Calibration

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SAR resolution and polarization performance studies for ATR algorithms have been the source of recent attention. Thorough investigations are often hindered by the lack of rigorously consistent high-resolution full-polarimetric signature data for a sufficient number of targets across requisite viewing angles, articulations and environmental conditions. While some evaluative performance studies of high-value structures and conceptual radar systems may be effectively studied with limited field radar data, to minimize signature acquisition costs, pose-independent studies of ATR algorithm are best served by signature libraries fashioned to encompass the complexity of the collection scenario. In response to the above requirements, the U.S. Army's National Ground Intelligence Center and Targets Management Office originated, sponsored, and directed a signature project plan to acquire multiple target signature data at Eglin, AFB using a high resolution full-polarimetric Ka-band radar. TMO and NGIC have sponsored researchers at both the Submillimeter-Wave Technology Laboratory and Simulation Technologies to analyze the trade-off between signature resolution and polarimetric features (ongoing research) of this turntable data. The signature data was acquired at five elevations spanning 5 degree to 60 degree for a T-72M1, T-72B, M1, M60-A3 and one classified vehicle. Using signal processing software established in an NGIC/STL-based signature study, researchers executed an HRR and ISAR cross-correlation study involving multiple resolutions to evaluate peak performance levels and to effectively understand signature requirements through the variability of multiple target RCS characteristics. The signature-to-signature variability quantified on the four unclassified MBTs is presented in this report, along with a description and examples of the signature analysis techniques exploited. This signature data is available from NGIC/TMO on request for Government Agencies and Government Contractors with an established need-to-know.

Proceedings Article | 15 September 1998 Paper

Variability study of Ka-band HRR polarimetric signatures on 11 T-72 tanks

William Nixon, H. Neilson, G. Szatkowski, Robert Giles, William Kersey, L. Perkins, Jerry Waldman

Proceedings Volume 3370, (1998) https://doi.org/10.1117/12.321841

KEYWORDS: Ka band, Calibration, Radar, Silver, Target acquisition, Inspection, Polarimetry, Data acquisition, Polarization, Extremely high frequency

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Proceedings Article | 14 December 1992 Paper

Silicone-based anechoics at terahertz frequencies

R. Giles

Proceedings Volume 1929, 19292B (1992) https://doi.org/10.1117/12.2298200

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Proceedings Article | 1 December 1990 Paper

Optical properties of polycrystalline diamond films in the far-infrared

Andrew Gatesman, Robert Giles, Jerry Waldman, L. Bourget, Richard Post

Proceedings Volume 1325, (1990) https://doi.org/10.1117/12.22456

KEYWORDS: Diamond, Data modeling, Absorption, Refractive index, Spectroscopy, Optical properties, Raman spectroscopy, Microwave radiation, FT-IR spectroscopy, Scattering

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Proceedings Article | 1 December 1990 Paper

Design and fabrication of narrow band radar absorbing materials at terahertz frequencies

R. Giles

Proceedings Volume 1514, 151426 (1990) https://doi.org/10.1117/12.2301488

KEYWORDS: Dielectrics, Metals, Reflectivity, Radar, Refractive index, Terahertz radiation, Absorption, Fourier transforms, Aluminum, Optical design

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Showing 5 of 63 publications

Conference Committee Involvement (17)

Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XVIII

25 January 2025 | San Francisco, California, United States

Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XVII

29 January 2024 | San Francisco, California, United States

Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XVI

30 January 2023 | San Francisco, California, United States

Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XV

25 January 2022 | San Francisco, California, United States

Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XIV

6 March 2021 | Online Only, California, United States

Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XIII

3 February 2020 | San Francisco, California, United States

Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XII

4 February 2019 | San Francisco, California, United States

Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XI

29 January 2018 | San Francisco, California, United States

Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications X

30 January 2017 | San Francisco, California, United States

Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications IX

15 February 2016 | San Francisco, California, United States

Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications VIII

10 February 2015 | San Francisco, California, United States

Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications VII

4 February 2014 | San Francisco, California, United States

Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications VI

5 February 2013 | San Francisco, California, United States

Terahertz Technology and Applications V

25 January 2012 | San Francisco, California, United States

Terahertz Technology and Applications IV

27 January 2011 | San Francisco, California, United States

Terahertz Technology and Applications III

28 January 2010 | San Francisco, California, United States

Terahertz Technology and Applications II

28 January 2009 | San Jose, California, United States

Showing 5 of 17 Conference Committees

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