Now showing items 1-17 of 17

    • A 220 GHz 3D imaging radar with sub-cm3 voxel resolution for security applications 

      Robertson, Duncan Alexander; MacFarlane, David Graham; Bryllert, Tomas (IEEE, 2017-01-19) - Conference item
      Radars operating at high millimetre and sub-millimetre wave frequencies are promising candidates for security applications such as people screening since they offer the possibility to form 3D images through clothing with ...
    • 220GHz wideband 3D imaging radar for concealed object detection technology development and phenomenology studies 

      Robertson, Duncan Alexander; Macfarlane, David Graham; Bryllert, Tomas (SPIE, 2016-05-12) - Conference item
      We present a 220 GHz 3D imaging ‘Pathfinder’ radar developed within the EU FP7 project CONSORTIS (Concealed Object Stand-Off Real-Time Imaging for Security) which has been built to address two objectives: (i) to de-risk ...
    • 94 GHz pulsed coherent radar for high power amplifier evaluation 

      Robertson, Duncan Alexander; Hunter, Robert Iain; Gallacher, Thomas (SPIE, 2016-05-12) - Conference item
      We present the design and characterization of a 94 GHz pulsed coherent radar to be used for the evaluation and demonstration of novel wideband, high power vacuum tube amplifier technology. The radar is designed to be fully ...
    • Absence of critical exponents in ferroelectrics : experiments of Hilczer and theory of Levanyuk and Sigov 

      Scott, J. F. (2016-08-02) - Journal article
      The pioneering breakthrough of Bozena Hilczer and her coworkers showed that the so-called critical phenomena in many ferroelectric crystals are entirely produced by defects. She studied gadolinium aluminum sulphate hexahydrate ...
    • Advances in optical sensing of explosive vapours 

      Gillanders, Ross Neil; Samuel, Ifor David William; Turnbull, Graham Alexander; Campbell, Iain Angus; Glackin, James Michael Edward (SciTePress, 2018-01-25) - Conference item
      Optical techniques for the detection of explosives are receiving increasing interest due to potentially fast responding, highly-sensitive systems. Conjugated polymers are suitable probe materials for this application since ...
    • Automated peak detection method for behavioral event identification : detecting Balaenoptera musculus and Grampus griseus feeding attempts 

      Sweeney, David A.; Deruiter, Stacy L.; McNamara-Oh, Ye Joo; Marques, Tiago A.; Arranz, Patricia; Calambokidis, John (2019-04-04) - Journal article
      The desire of animal behaviorists for more flexible methods of conducting inter-study and inter-specific comparisons and meta-analysis of various animal behaviors compelled us to design an automated, animal behavior peak ...
    • Compact corrugated feedhorns with high Gaussian coupling efficiency and -60 dB sidelobes 

      McKay, Johannes Erik; Robertson, Duncan Alexander; Speirs, Peter James; Hunter, Robert Iain; Wylde, Richard John; Smith, Graham Murray (2016-06) - Journal article
      We demonstrate that very high performance, extremely compact, scalar corrugated feedhorns can be designed and constructed by optimizing the excitation and phasing of the HE11, HE12 and HE13 modes near the throat of the ...
    • Design of a spline horn for a W-band gyro-TWA 

      Zhang, Liang; He, Wenlong; Donaldson, Craig R.; Cross, Adrian W.; Robertson, Duncan; Hunter, Robert; Smith, Graham (Institute of Electrical and Electronics Engineers Inc., 2017-03-07) - Conference item
      A spline horn for use in a W-band gyro-TWA was design and manufactured. The horn was designed to have a high Gaussian content over the whole operating frequency band of 90-100 GHz. It also had a low reflection of the TE11 ...
    • Hyperelastic tuning of one dimensional phononic band-gaps using directional stress 

      Demčenko, Andriejus; Mazilu, Michael; Wilson, Rab; Volker, Arno W.F.; Cooper, Jonathan M. (2018-06) - Journal article
      In this paper we show that acoustoelasticity in hyperelastic materials can be understood using the framework of non-linear wave mixing, which, when coupled with an induced static stress, leads to a change in the phase ...
    • Improving the sensitivity and utility of pulsed dipolar experiments in EPR at 94 GHz 

      Motion, Claire Louise (University of St Andrews, 2018-06-27) - Thesis
      Pulsed dipolar spectroscopy (PDS) is an electron paramagnetic resonance (EPR) technique, used to conduct long range distance measurements in proteins in the nanometre range. This thesis presents a number of methodological ...
    • Mars surface context cameras past, present, and future 

      Gunn, M. D.; Cousins, Claire Rachel (2016-04) - Journal item
      Mars has been the focus of robotic space exploration since the 1960s, in which time there have been over 40 missions, some successful, some not. Camera systems have been a core component of all instrument payloads sent to ...
    • Millimeter wave imaging at up to 40 frames per second using an optoelectronic photo-injected Fresnel zone plate lens antenna 

      Robertson, Duncan Alexander; Gallacher, Thomas; Sondena, Rune; Macfarlane, David Graham (SPIE, 2016-05-12) - Conference item
      Optoelectronic methods are promising for rapid and highly reconfigurable beam steering across the microwave to the terahertz range. In particular, the photo-injected Fresnel zone plate antenna (piFZPA) offers high speed, ...
    • The PanCam instrument for the ExoMars rover 

      Coates, Andrew; Jaumann, Ralf; Griffiths, Andrew; Leff, Craig; Schmitz, Nicole; Josset, Jean-Luc; Paar, Gerhard; Gunn, Matthew; Hauber, Ernst; Cousins, Claire Rachel; Cross, Rachel; Grindrod, Peter; Bridges, John; Balme, Matthew; Gupta, Sanjeev; Crawford, Ian; Irwin, P; Stabbins, Roger; Tirsch, D; Vago, Jorge; Theodorou, T; Caballo-Perucha, M; Osinski, Gordon; The PanCam team (2017-07-01) - Journal article
      The scientific objectives of the ExoMars rover are designed to answer several key questions in the search for life on Mars. In particular, the unique subsurface drill will address some of these, such as the possible existence ...
    • Remote detection of past habitability at Mars-analogue hydrothermal alteration terrains using an ExoMars Panoramic Camera emulator 

      Harris, Jennifer K.; Cousins, Claire Rachel; Gunn, Matthew; Grindrod, Peter M.; Barnes, David; Crawford, Ian A.; Cross, Rachel E.; Coates, Andrew (2015-05-15) - Journal article
      A major scientific goal of the European Space Agency’s ExoMars 2018 rover is to identify evidence of life within the martian rock record. Key to this objective is the remote detection of geological substrates that are ...
    • Second generation of AVTIS FMCW millimeter wave radars for mapping volcanic terrain 

      MacFarlane, David Graham; Robertson, Duncan Alexander; Cassidy, Scott Lindsay (SPIE, 2016-05-12) - Conference item
      The second generation AVTIS ground-based millimeter wave instruments designed for monitoring topography of volcanic lava domes are solid state 94 GHz FMCW rastered, real beam radars operating at ranges of up to ~7 km with ...
    • Submillimetre wave 3D imaging radar for security applications 

      Robertson, Duncan Alexander; MacFarlane, David Graham; Cassidy, Scott Lindsay; Bryllert, Tomas; Gandini, Erio; Llombart, Nuria (2016-03-31) - Conference paper
      There is ongoing worldwide interest in finding solutions to enhance the security of civilians at airports, borders and high risk public areas in ways which are safe, ethical and streamlined. One promising approach is to ...
    • The use of composite pulses for improving DEER signal at 94 GHz 

      Motion, Claire L.; Cassidy, Scott L.; Cruickshank, Paul A. S.; Hunter, Robert I.; Bolton, David R.; El Mkami, Hassane; Van Doorslaer, Sabine; Lovett, Janet E.; Smith, Graham M. (2017-05) - Journal article
      The sensitivity of pulsed electron paramagnetic resonance (EPR) measurements on broad-line paramagnetic centers is often limited by the available excitation bandwidth. One way to increase excitation bandwidth is through ...