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Synchronization of multiple USRP SDRs for coherent receiver applications

Krueckemeier, Markus; Schwartau, Fabian; Monka-Ewe, Carsten; Schoebel, Joerg


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{
  "inLanguage": {
    "alternateName": "eng", 
    "@type": "Language", 
    "name": "English"
  }, 
  "description": "<p>This paper describes the necessary means to combine&nbsp;multiple Ettus Research USRP X310 software-defined radios&nbsp;to a multichannel coherent receiver for direction-of-arrival (DoA)&nbsp;and passive radar applications. The requirements to combine several&nbsp;software-defined radios to a multichannel coherent receiver&nbsp;are examined in general. In particular the requirement of phase&nbsp;coherence necessitates a closer look on the receiver synchronization,&nbsp;since the straightforward approach of synchronizing&nbsp;the systems with a common reference clock will in most cases&nbsp;lead to phase ambiguities between the channels. The mechanism&nbsp;inducing these phase ambiguities between several systems that&nbsp;are phase-locked to a common reference is discussed in detail.&nbsp;Results regarding the achieved phase stability and a preliminary&nbsp;measurement demonstrating the DoA capabilities of the system&nbsp;are shown.</p>", 
  "license": "https://creativecommons.org/licenses/by/4.0/legalcode", 
  "creator": [
    {
      "affiliation": "Technische Universit\u00e4t Braunschweig", 
      "@type": "Person", 
      "name": "Krueckemeier, Markus"
    }, 
    {
      "affiliation": "Technische Universit\u00e4t Braunschweig", 
      "@type": "Person", 
      "name": "Schwartau, Fabian"
    }, 
    {
      "affiliation": "Technische Universit\u00e4t Braunschweig", 
      "@type": "Person", 
      "name": "Monka-Ewe, Carsten"
    }, 
    {
      "affiliation": "Technische Universit\u00e4t Braunschweig", 
      "@type": "Person", 
      "name": "Schoebel, Joerg"
    }
  ], 
  "headline": "Synchronization of multiple USRP SDRs for coherent receiver applications", 
  "image": "https://zenodo.org/static/img/logos/zenodo-gradient-round.svg", 
  "datePublished": "2019-10-29", 
  "url": "https://zenodo.org/record/3522157", 
  "@type": "ScholarlyArticle", 
  "@context": "https://schema.org/", 
  "identifier": "https://doi.org/10.1109/SDS.2019.8768634", 
  "@id": "https://doi.org/10.1109/SDS.2019.8768634", 
  "workFeatured": {
    "alternateName": "SDS", 
    "location": "Rome, Italy", 
    "@type": "Event", 
    "name": "2019 Sixth International Conference on Software Defined Systems"
  }, 
  "name": "Synchronization of multiple USRP SDRs for coherent receiver applications"
}
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