Developments in target micro-Doppler signatures analysis : radar imaging, ultrasound and through-the-wall radar [PDF]
, 2013 Target motions, other than the main bulk translation of the target, induce Doppler modulations around the main Doppler shift that form what is commonly called a target micro-Doppler signature.
Woodbridge, K. +3 more
core +5 more sources
Forked-Crossing Metasurface for Multi-Band Polarization Conversion with Distinct Bandwidths
MicromachinesThis study presents a reflective and highly efficient multi-band metasurface polarization converter based on a forked-crossing patch array. Both simulation and experimental results reveal that such a metasurface achieves polarization conversion ratio ...
Pengpeng Zhang +3 more
doaj +1 more source
Sea Echoes for Airborne HF/VHF Radar: Mathematical Model and Simulation
Remote Sensing, 2020 Currently, shore-based HF radars are widely used for coastal observations, and airborne radars are utilized for monitoring the ocean with a relatively large coverage offshore.
Fan Ding +3 more
doaj +1 more source
Winter accumulation in the percolation zone of Greenland measured by airborne radar altimeter [PDF]
, 2007 We here determine the surface elevation and the winter snow accumulation rate along a profile in the percolation zone of the Greenland Ice Sheet from data collected with ESA's Airborne SAR/Interferometric Radar Altimeter System (ASIRAS) in spring 2004 ...
Nienow, P +17 more
core +1 more source
Bistatic TerraSAR-X/F-SAR Spaceborne-Airborne SAR Experiment: Description, Data Processing and Results [PDF]
, 2010 We report about the first X-band spaceborne-airborne bistatic SAR experiment, using the German satellite TerraSAR-X as transmitter and DLR's new airborne radar system F-SAR as receiver. The data were acquired early November 2007.
Rodriguez Cassola, Marc +3 more
core +1 more source
High-Gain Miniaturized Ultrawideband Antipodal Vivaldi Antenna with Metamaterials
MicromachinesA compact high-gain antipodal Vivaldi antenna with ultra-wideband (UWB) performance ranging from 1 GHz to 25 GHz is proposed and demonstrated. The antenna features two sets of tapered exponential slots along the flare edges to enhance low-frequency ...
Wentao Zhang +3 more
doaj +1 more source
Enhanced Pre-STAP Beamforming for Range Ambiguous Clutter Separation with Vertical FDA Radar
Remote Sensing, 2021 Medium pulse repetition frequency (MPRF) is an important mode in airborne radar system. Since MPRF mode brings both Doppler and range ambiguities, it causes difficulty for the airborne radar to suppress ground or sea clutter. In recent years, it has been
Weiwei Wang +4 more
doaj +1 more source
Airborne Synthetic Aperture Radar: Models, Focusing and Experiments [PDF]
, 2006 Synthetic Aperture Radar (SAR) is a remote sensing technique that allows the generation of microwave images of the Earth surface, independently of weather condition and of sun illumination.
Perna, Stefano
core +1 more source
ASIRAS airborne radar resolves internal annual layers in the dry-snow zone of Greenland [PDF]
, 2006 We present data from the European Space Agency's Airborne SAR/Interferometric Radar Altimeter System (ASIRAS), flown during the CryoVex 2004 field calibration/validation campaign, and new, high-resolution depth profiles of snow density measured in the ...
Shepherd, A. P. +16 more
core +1 more source
Effects of Atmospheric Refraction on an Airborne Weather Radar Detection and Correction Method
Advances in Meteorology, 2015 This study investigates the effect of atmospheric refraction, affected by temperature, atmospheric pressure, and humidity, on airborne weather radar beam paths.
Lei Wang, Ming Wei, Tao Yang, Ping Liu
doaj +1 more source