PPT-Coherent backscattering effects for single

particles and distributions of particles Robin Hogan and Chris Westbrook Deptartment of Meteorology University of Reading 25 March 2014 Overview Motivation We need to be able to model the backscattered signal from clouds in order to interpret radar and lidar observations particularly from space in terms of cloud properties. H. Park. , M. Lu, E. Bloch, T. Reed, Z. Griffith, L. Johansson, L. . Coldren. , and M. . Rodwell. University of California at Santa Barbara. Introductions. Motivations . Higher Spectral Efficiency – QPSK / multi-level QAMs. II. Introduction to Fiber Optic Communication. COHERENT DETECTION. . Moshe Nazarathy All Rights Reserved. Ver. . 2. LO. I&D IDEAL . PHOTON COUNTER. SNR (sig. pwr / shot-noise var). at the output of a . Peter Hall, Tim Colegate, J-P Macquart, Nathan Clarke, Steven Tingay, Cathryn Trott and Randall Wayth. ICRAR / Curtin Institute of Radio Astronomy. Overview. Fast transients in radio astronomy. < 5 s duration for the purpose of this talk. . less solar system bodies. . Janna M. Dlugach. Main Astronomical Observatory of the National Academy of Sciences of Ukraine, Kyiv, Ukraine. Michael I. Mishchenko. NASA Goddard Institute for Space Studies, New York, USA. Stephanie Stevenson. Paul . Scherrer. Institute. 3 months in . Villigen. Research project with . cSAXS. team. Coherent small angle x-ray scattering. Research areas:. Coherent X-ray Diffraction & . Clusters. Syed. Islam. 1. Agenda. 2. Coherent Clusters (Specialized Dependence Cluster). Mapping Source Code Constructs to Clusters. Visualization Tool for Dependence Clusters . Overlapping. Clusters. . of . d. ensity. . f. luctuations. . in frequency . r. ange of (20-110)kHz . Core density fluctuations. Parallel flow measured by CHERS. Core Density Fluctuations in . the HSX . Stellarator. Abstract. Floating potential and envelop of ion saturation . current fluctuations are . correlated. Mode frequency:. 16 kHz: 50 kW ECRH. (ion transit frequency). 37 kHz: 100 kW ECRH . (GAM frequency). 2 D image of the mode. The process of summing all the radar pulses to improve detection is known as “Pulse integration”. A search-radar . beam scans, the target will remain in the beam . sufficiently . long for more than one pulse . Undulator. Radiation to Free Electron Lasing. 1. David Attwood. University of California, . Berkeley. http:/. /ast.. coe.berkeley.edu. /sxr2009. http:/. /ast.. coe.berkeley.edu. /srms. Synchrotron radiation. ↔. Incoherent. Photon Detection . ↔. Bolometric. Photon Counting . ↔ Integrating. Radio Telescopes. Typical Designs. Heterodyne Receivers. Jansky’s First Radio Telescope. 1933. Grote Reber: 1937 Radio Telescope. Theory. Motivation. A Study of Propagation of Laser Light through a Turbulent Atmosphere. MIDN 3/C Meredith L. Lipp. Professor Svetlana . Avramov-Zamurovic. , . Assistant Professor Charles Nelson. T. Spikes in trigger rate. Periodic:. With B ON in 2008 . Without B on during MWGR18 . Sporadic . MWGR 19. Strip noise profile. 6 may . 22 April. REASON: HV problem in RB1 out sect 12. Noisy topology. Example: ASK, FSK, PSK, QAM. Binary digital modulation. Multilevel digital modulation. Amplitude Shift Keying. Binary-ASK --- BASK. Or On-Off Keying OOK. Uses two amplitude levels for the modulated carrier .