Results 61 to 70 of about 96,176 (211)
Design of a Printed Dipole Antenna Array for a Passive Radar System
International Journal of Antennas and Propagation, 2013 Passive radar (or Passive Coherent Localisation) is an advancing technology for covert operation. The signal transmitted from sources of opportunity such as radio or TV stations is used as illumination for a certain area of interest.
Peter Knott
doaj +1 more source
Radar target micro-doppler signature classification [PDF]
, 2008 This thesis reports on research into the field of Micro-Doppler Signature (μ-DS) based radar Automatic Target Recognition (ATR) with additional contributions to general radar ATR methodology.
Smith, G.E.
core
High Precision Antenna Characterisation for Broadband Synthetic Aperture Radar Processing [PDF]
, 2014 The airborne F-SAR sensor\cite{fsar}, developed and operated by the DLR-HR institute, acquires very high resolution, fully polarimetric synthetic aperture radar (SAR) data in multiple frequency bands in addition to providing a number of ...
Bernd Gabler +5 more
core +1 more source
Nightside studies of coherent HF radar spectral width behaviour [PDF]
, 2002 A previous case study found a relationship between high spectral width measured by the CUTLASS Finland HF radar and elevated electron temperatures observed by the EISCAT and ESR incoherent scatter radars in the post-midnight sector of magnetic local time.
J. A. Davies +21 more
core +1 more source
IEEE Journal of Selected Topics in Applied Earth Observations and Remote SensingThis work investigates the impact of motion estimation errors on passive inverse synthetic aperture radar (ISAR) images of rotating targets when the backprojection algorithm (BPA) is employed to focus the data.
Fabrizio Santi +3 more
doaj +1 more source
Modern spectral analysis in HF radar remote sensing. [PDF]
, 1998 High-Frequency (HF) radar systems are currently used to collect wave data. By applying spectral analysis methods, such as the Fast Fourier Transform (FFT) method, to the radar backscatter from the ocean surface, the so-called Doppler spectrum is ...
Vizinho, A., Vizinho, A
core
High-latitude observations of impulse-driven ULF pulsations in the ionosphere and on the ground [PDF]
, 2003 International audienceWe report the simultaneous observation of 1.6?1.7 mHz pulsations in the ionospheric F-region with the CUTLASS bistatic HF radar and an HF Doppler sounder, on the ground with the IMAGE and SAMNET magnetometer arrays, and in the ...
Menk, F. W. +14 more
core +1 more source
Radar for Space Observation: Systems, Methods and Applications
Remote SensingIn today’s world, where near-Earth space constitutes an increasingly congested and contested theater of economic, political, and military activities for the growing number of space-faring nations, the significance of actionable situational awareness ...
Vassilis Karamanavis
doaj +1 more source
Sensors, 2020 The increasing interest in the radar detection of low-elevation and small-size targets in complicated ground environments (such as urban, suburban, and mixed country areas) calls for a precise quantification of the radar detection capabilities in those ...
Gaspare Galati +2 more
doaj +1 more source
Metamaterials for Microwave Radomes and the Concept of a Metaradome: Review of the Literature
International Journal of Antennas and Propagation, 2017 A radome is an integral part of almost every antenna system, protecting antennas and antenna electronics from hostile exterior conditions (humidity, heat, cold, etc.) and nearby personnel from rotating mechanical parts of antennas and streamlining ...
E. Öziş, A. V. Osipov, T. F. Eibert
doaj +1 more source