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    Design And Development Of An Autonomous Radar Receiver For The Detection Of Ultra High Energy Cosmic Rays

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    Kunwar_ku_0099D_13870_DATA_1.pdf (6.974Mb)
    Issue Date
    2015-05-31
    Author
    Kunwar, Samridha
    Publisher
    University of Kansas
    Format
    106 pages
    Type
    Dissertation
    Degree Level
    Ph.D.
    Discipline
    Physics & Astronomy
    Rights
    Copyright held by the author.
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    Abstract
    The detection of ultra-high energy cosmic rays is constrained by their flux, requiring detectors with apertures of hundreds or even thousands of square kilometers and close to one hundred percent duty cycle. The sheer scale that would be required of conventional detectors, to acquire sufficient statistics for energy, composition or anisotropy studies, means that new techniques that reduce manpower and financial resources are continually being sought. In this dissertation, the development of a remote sensing technique based observatory known as bistatic radar, which aims to achieve extensive coverage of the Earth's surface, cf. Telescope Array's 700 km2 surface detector, is discussed. Construction of the radar projects transmitter station was completed in the summer of 2013, and remote receiver stations were deployed in June and November of 2014. These stations accomplish radar echo detection using an analog signal chain. Subject to less radio interference, the remote stations add stereoscopic measurement capabilities that theoretically allow unique determination of cosmic ray geometry and core location. An FPGA is used as a distributed data processing node within the project. The FPGA provides triggering logic for data sampled at 200 MSa/s, detecting Cosmic Ray shower echoes chirping at -1 to -10 Megahertz/microsecond (depending on the geometry) for several microseconds. The data acquisition system with low power consumption at a cost that is also comparatively inexpensive is described herein.
    URI
    http://hdl.handle.net/1808/19060
    Collections
    • Dissertations [4474]
    • Physics & Astronomy Dissertations and Theses [121]

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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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