Results 11 to 20 of about 847,419 (234)
Anomalous Reflection From a Phase Gradient Metasurface With Arbitrary Incident Angle
IEEE Access, 2023 A planar phase gradient metasurface (PGM) with phase gradients in two in-plane directions will introduce two additional wave vectors to the reflected wave vector.
Wihan Barnard +2 more
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On Theoretical Accuracy of Meteorological Targets Measurement by Radar [PDF]
Radioengineering, 2022 We draw your attention to the fact that meteorological radar does not actually measure a commonly used quantity “radar reflectivity factor,” (which is not dependent on frequency) but a different quantity called “radar reflectivity.” We present the usual ...
O. Fiser, M. Kovalchuk
doaj
Changing flight heading during pass to enhance SAR change detection performance
IET Radar, Sonar & Navigation, 2021 Due to the wavelength‐resolution characteristics, wavelength‐resolution synthetic aperture radar (SAR) is considered for the change detection application aiming to achieve high detection probability and low false alarm rate.
Viet T. Vu +4 more
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Laboratory bistatic synthetic aperture radar coherent change detection investigation
Electronics Letters, 2023 Synthetic Aperture Radar (SAR) Coherent Change Detection (CCD) allows for the detection of very small scene changes. This is particularly useful for reconnaissance and surveillance as small changes such as vehicle tracks can be identified.
Alexander Hagelberg +2 more
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IET Microwaves, Antennas & Propagation, 2022 Based on an integrated design of metasurface units and antenna elements, a 2‐bit metasurface array antenna with broadband low radar cross‐section (RCS) covering large incident angle space is proposed in this study.
Zhiyun Zhang +5 more
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Sensors, 2021 A target’s movements and radar cross sections are the key parameters to consider when designing a radar sensor for a given application. This paper shows the feasibility and effectiveness of using 24 GHz radar built-in low-noise microwave amplifiers for ...
Homa Arab +4 more
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International Journal of Antennas and Propagation, 2016 The first- and second-order bistatic high frequency radar cross sections of the ocean surface with an antenna on a floating platform are derived for a frequency-modulated continuous wave (FMCW) source.
Yue Ma, Weimin Huang, Eric W. Gill
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Modelling of N21P emission rates in aurora using various cross sections for excitation [PDF]
Annales Geophysicae, 2009 Measurements of N21P auroral emissions from the (4,1) and (5,2) bands have been made at high temporal and spatial resolution in the region of the magnetic zenith. The instrument used was the auroral imager ASK, situated at Ramfjordmoen, Norway (69.6 N,
M. Ashrafi +4 more
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Wind Turbine Radar Cross Section [PDF]
International Journal of Antennas and Propagation, 2012 The radar cross section (RCS) of a wind turbine is a figure of merit for assessing its effect on the performance of electronic systems. In this paper, the fundamental equations for estimating the wind turbine clutter signal in radar and communication systems are presented.
David Jenn, Cuong Ton
openaire +3 more sources
Remote Sensing, 2022 Migratory insects constitute a valuable component of atmospheric and terrestrial biomass, and their migratory behavior provides abundant information for insect management and ecological effect assessment.
Rui Wang +8 more
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