Now showing items 1-6 of 6

    • Array antennas with defunct elements, a computational study 

      Strøm, Kyrre (2021-06-16)
      Simulations of transmit and receive properties for a Uniform Linear Array (ULA) antenna with defunct elements have been conducted. Maximum directivity for ULA without tapering is determined by the number of operating ...
    • Beamforming of synthetic target signal acquired by the Atlantis PCL system 

      Strøm, Kyrre; Finden, Erlend; Schell, Jochen; Norheim-Næss, Idar; Lie-Svendsen, Øystein (2016-09-20)
      The passive coherent location system, Atlantis, is a test bed for digital beamforming at the Norwegian Defence Research Establishment (FFI). The system has functionality for real time direction of arrival (DoA) estimation. ...
    • DSI Suppression with Adaptive Beamforming in DVB-T Passive Radar Measurements 

      Strøm, Kyrre; Lie-Svendsen, Øystein; Norheim-Næss, Idar; Johnsen, Terje; Finden, Erlend; Olsen, Karl Erik (2018)
      Adaptive beamforming (ABF) for maximizing the signal to interference plus noise ratio (SINR) is applied to acquisitions made by a passive bistatic radar (PBR) exposed to strong direct signal interference (DSI). The DVB-T ...
    • DVB-T Passive Radar Dual Polarization Measurements in the Presence of Strong Direct Signal Interference 

      Strøm, Kyrre; Lie-Svendsen, Øystein; Finden, Erlend; Norheim-Næss, Idar; Johnsen, Terje; Baruzzi, Aurora (2017)
      A dual-polarization passive bistatic radar is used to evaluate the potential benefit of cross-polarized measurements for the suppression of strong direct signal interference in the DVB-T band. The linear array antenna ...
    • Maskinlæring og gruppeantenner i moderne radarsystemer 

      Akhtar, Jabran; Strøm, Kyrre (2021-02-26)
      Denne rapporten presenterer enkelte resultater fra siste del av FFI-prosjektet Operativ radarytelse II (OPRA II), hvor den potensielle anvendelsen av maskinlæring og nevrale nettverk i moderne radarsystemer er blitt ...
    • Passive Radar detection of small UAV over sea 

      Norheim-Næss, Idar; Finden, Erlend; Strøm, Kyrre (2019-07-22)
      During a trial over the Trondheim-fjord in Norway fall 2018, aDVB-T based passive radar system was used for detecting a small unmanned aerial vehicle (UAV) over sea. The measurements show a possible detection range of 1 ...