Search for dissertations about: "Antenna radar"

Showing result 1 - 5 of 49 swedish dissertations containing the words Antenna radar.

  1. 1. Signal Processing for Radar with Array Antennas and for Radar with Micro-Doppler Measurements

    University dissertation from Karlskrona : Blekinge Tekniska Högskola

    Author : Svante Björklund; Blekinge Tekniska Högskola.; [2017]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; radar; signal processing; array antenna; subarray; clutter; jamming; interference; direction of arrival estimation; security; micro-Doppler; feature extraction; classification;

    Abstract : Radar (RAdio Detection And Ranging) uses radio waves to detect the presence of a target and measure its position and other properties. This sensor has found many civilian and military applications due to advantages such as possible large surveillance areas and operation day and night and in all weather. READ MORE

  2. 2. Modeling of a Retrodirective Channel With Active Antenna Arrays for Cross-Eye Jamming

    University dissertation from KTH Royal Institute of Technology

    Author : Björn Petersson; KTH.; [2017]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; electronic warfare; antenna array; antenna system; radar countermeasures; jamming; cross-eye; systems modeling; system performance; systems simulation; Electrical Engineering; Elektro- och systemteknik;

    Abstract : Cross-Eye (CE) jamming is a technique aimed at inducing false target angles in radar measurements. The potential to deceive monopulse radar, a radar type commonly used due to its angular accuracy and resilience against jamming, has captured the interest of Electronic Warfare (EW) system manufacturers. READ MORE

  3. 3. High-resolution meteor exploration with tristatic radar methods

    University dissertation from Umeå : Fysik

    Author : Johan Kero; Umeå universitet.; [2008]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; meteors; meteoroids; interplanetary dust; radar; head echoes; ablation; meteoroid fragmentation; radar; huvudekon; ablation; meteorisk fragmentation; meteorer; meteoroider; interplanetärt stoft; TECHNOLOGY Other technology Space engineering; TEKNIKVETENSKAP Övriga teknikvetenskaper Rymdteknik;

    Abstract : A meteor observed with the naked eye is colloquially called a shooting star. The streak of light is generated by an extra-terrestrial particle, a meteoroid, entering the Earth’s atmosphere. The term meteor includes both luminosity detectable by optical means and ionization detectable by radar. READ MORE

  4. 4. Analysis of Resistor-Loaded Bow-Tie Antennas for Ground Penetrating Radar Applications

    University dissertation from Stockholm : Alfvénlaboratoriet

    Author : Disala Uduwawala; KTH.; [2004]
    Keywords : Ground penetrating radar; Buried object detection; Simulation; Radar antennas; Radar signal processing; FDTD methods; Optimal design; Lossy media; Dispersive media; Clutter; Polarization;

    Abstract : Ground penetrating radar (GPR) systems are increasinglybeing used for the detection and location of buried objectswithin the upper regions of the earth's surface. Numericalsimulation of such systems plays an important role in thedevelopment of GPR hardware and signal processingtechniques. READ MORE

  5. 5. Integral Identities for Passive Systems and Spherical Waves in Scattering and Antenna Problems

    University dissertation from Department of Electrical and Information Technology, Lund University

    Author : Anders Bernland; Lund University.; Lunds universitet.; [2012]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; dispersion relations; sum rules; physical limitations; Herglotz functions; electromagnetic scattering; antenna theory; spherical wave expansions; antenna measurements; propagation channel measurements;

    Abstract : Sum rules and physical limitations within electromagnetic theory and antenna theory have received significant attention in the last few years. However, the derivations are often relying on application specific and sometimes unsupported assumptions, and therefore a mathematically rigorous and generally applicable approach seems timely. READ MORE