Results 41 to 50 of about 17,770 (216)

Autonomous FMCW Radar Survey of Antarctic Shear Zone [PDF]

open access: yes, 2010
Radar survey of the Antarctic shear zone was conducted using an ultra-wideband (2-10 GHz) frequency modulated continuous wave (FMCW) radar. The radar was mounted on a sled and pulled by a robot that was specifically designed to operate in a harsh polar ...
Arcone, Steven A.   +4 more
core   +2 more sources

System‐based specifications for better design of ground‐penetrating radar antennas

open access: yesIET Microwaves, Antennas & Propagation, 2023
Currently, no publicly available comprehensive set of specifications exists for the design of ground‐penetrating radar antennas. Specifications are presented and derived for the design of a ground‐penetrating radar antenna based on the antenna's ...
Samuel Wagner   +3 more
doaj   +1 more source

UWB microstrip filter design using a time-domain technique [PDF]

open access: yes, 2005
A time-domain technique is proposed for ultra-wideband (UWB) microstrip-filter design. The design technique uses the reflection coefficient (S11) specified in the frequency domain. When the frequency response of the UWB filter is given, the response will
Bennett   +10 more
core   +1 more source

Ultra-Wideband Low-RCS Circularly-Polarized Metasurface-Based Array Antenna Using Tightly-Coupled Anisotropic Element

open access: yesIEEE Access, 2018
A novel broadband circular-polarized array antenna with ultra-wideband low radar cross section (RCS) is proposed. The array is made up of 2 × 2 identically circular-polarized sub-arrays in a chessboard configuration.
Lili Cong   +3 more
doaj   +1 more source

Wideband Waveform Design for Robust Target Detection

open access: yes, 2014
Future radar systems are expected to use waveforms of a high bandwidth, where the main advantage is an improved range resolution. In this paper, a technique to design robust wideband waveforms for a Multiple-Input-Single-Output system is developed.
Panahi, Ashkan   +2 more
core   +1 more source

Non-Contact Vital States Identification of Trapped Living Bodies Using Ultra-Wideband Bio-Radar

open access: yesIEEE Access, 2021
Identifying the vital states of trapped survivors during post-disaster rescue missions can result in improved rescue strategies and provide injury pre-diagnosis information.
Yangyang Ma   +8 more
doaj   +1 more source

A Circuit-based Model for the Interpretation of Perfect Metamaterial Absorbers [PDF]

open access: yes, 2012
A popular absorbing structure, often referred to as Perfect Metamaterial Absorber, comprising metallic periodic pattern over a thin low-loss grounded substrate is studied by resorting to an efficient transmission line model.
Costa, Filippo   +3 more
core   +1 more source

A comprehensive ultra-wideband dataset for non-cooperative contextual sensing

open access: yesScientific Data, 2022
Measurement(s) Human physical activity • Human location Technology Type(s) Ultra-wideband impulse radar Factor Type(s) Human location • Human physical activity • Monitoring environment • Participant demographics • Radio-frequency signals Sample ...
Mohammud J. Bocus, Robert Piechocki
doaj   +1 more source

Highly efficient impulse-radio ultra-wideband cavity-backed slot antenna in stacked air-filled substrate integrated waveguide technology [PDF]

open access: yes, 2018
An impulse-radio ultra-wideband (IR-UWB) cavity-backed slot antenna covering the [5.9803; 6.9989] GHz frequency band of the IEEE 802.15.4a-2011 standard is designed and implemented in an air-filled substrate integrated waveguide (AFSIW) technology for ...
Lemey, Sam   +3 more
core   +1 more source

Deep Network for Simultaneous Decomposition and Classification in UWB-SAR Imagery

open access: yes, 2018
Classifying buried and obscured targets of interest from other natural and manmade clutter objects in the scene is an important problem for the U.S. Army.
Guo, Tiantong   +3 more
core   +1 more source

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