Browsing by Author "Johnsen, Terje"

Now showing items 1-8 of 8

    • Bistatiske radarmålinger av helikopter 

      Tansem, Ivar; Johnsen, Terje; Gundersen, Rune; Olsen, Karl Erik; Johnsrud, Steinar; Sørnes, Per K. (2002)
      A civilian helicopter was used for measurements with our bistatic CW radar. The flashes of the helicopter rotor blades as well as the helicopter body were detected. Detection of the helicopter body depended on the level ...

    • Change detection in SAR-images from the TerraSAR-X satellite with main focus towards harbors and container terminals 

      Johnsen, Terje (2013-10-01)
      The detection of changes or no change in a set of images of the same scene recorded at different times is of importance in many applications. The time scale could be from seconds to days or months. Man-made constructions ...

    • Digital multistatisk radar - overordnet maskinvarebeskrivelse 

      Tansem, Ivar; Gundersen, Rune; Bjordal, Halvor; Johnsen, Terje; Johnsrud, Steinar; Olsen, Karl Erik; Sørnes, Per K. (2002)
      This report gives a high level description of a radar demonstrator made for demonstrating bistatic radar. The demonstrator consists of one transmitter and one receiver unit. An overview of the hardware used in the ...

    • 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 ...

    • Multistatisk CW radar - konsept 

      Johnsen, Terje; Olsen, Karl Erik; Johnsrud, Steinar; Gundersen, Rune; Tansem, Ivar; Sørnes, Per K.; Bjordal, Halvor (2002)
      A technical concept study of digital multistatic radar has been executed in project 726. The concept is based on the use of a number of low cost lightweight transmitters and an advanced high-priced passive receiver unit. ...

    • Programvare for modellering og simulering av radar 

      Johnsen, Terje; Akhtar, Jabran (2013-11-01)
      I prosjektet Luftbåren overvåking er det blitt utviklet et program for å modellere ulike typer radarer og kjøre simuleringer i gitt terreng og omgivelser med valgte mål for å beregne en radars ytelse. Programmet er ...

    • RF-maskinvare for digital bistatisk radar 

      Gundersen, Rune; Johnsrud, Steinar; Sørnes, Per K.; Johnsen, Terje (2002)
      This paper covers the RF-HW made as a technology demonstrator for a bistatic radar system. Both the transmitter and the receiver are described in detail. By designing and building the radar we gained insight in using and ...