Results 31 to 40 of about 794,576 (207)
A Doppler Radar System for Sensing Physiological Parameters in Walking and Standing Positions
Sensors, 2017 Doppler radar can be implemented for sensing physiological parameters wirelessly at a distance. Detecting respiration rate, an important human body parameter, is essential in a range of applications like emergency and military healthcare environments ...
Malikeh Pour Ebrahim +2 more
doaj +1 more source
FDA-MIMO Radar Moving Target Detection Based on Doppler Spread Compensation
Leida xuebao, 2022 When Frequency Diverse Array and Multiple-Input Multiple-Output (FDA-MIMO) radar detects moving targets, the frequency offset between transmitting arrays is coupled with the target velocity, resulting in severe Doppler spread in the slow time dimension ...
Shunsheng ZHANG, Meihui LIU, Wenqin WANG
doaj +1 more source
Modification of reconstruction threshold algorithm in two-dimensional LFMCW compressive radar
Journal of Electrical Systems and Information Technology, 2022 Nowadays, the Compressive Sensing theory has an important effect on many communication system’s performances, and one of these applications is the radar system.
Sameh Ghanem
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IET Radar, Sonar & Navigation, 2022 Synthetic Impulse and Aperture Radar (SIAR) is a kind of Multiple Input Multiple Output (MIMO) radar. It is a four‐dimensional radar that has advantages against stealth targets, multi targets, anti‐radiated missile, reconnaissance and interference, as ...
Pourya Yaghoubi Aliabad +2 more
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Imaging observations of nighttime mid-latitude F-region field-aligned irregularities by an MU radar ultra-multi-channel system [PDF]
Annales Geophysicae, 2008 Mid-latitude F-region field-aligned irregularities (FAIs) were studied by using the middle-and-upper atmosphere (MU) radar ultra-multi-channel system with the radar imaging technique.
S. Saito +3 more
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The Journal of Engineering, 2019 Low observable moving target-detection technology under clutter background is the key factor affecting the radar performance. Here, frequency diverse array (FDA) MIMO radar is investigated for low-observable moving target detection.
Xiaolong Chen +5 more
doaj +1 more source
Advanced Science, EarlyView.The concept of high‐dimensional EM modulation using the STMA for physical layer secure communication is illustrated in figure. The STMA consists of a series of programmable unit cells, with 1‐bit reconfigurable phase states (0/π). The STMA is excited by a monochromatic continuous wave (CW) at frequency fc and controlled by a field‐programmable gate ...
Xinyu Fang +6 more
wiley +1 more source
Advanced Science, EarlyView.EndoTac presents a trocar‐compatible endoscopic vision‐based tactile sensor that uses a convex mirror to enlarge side‐facing tactile coverage during minimally invasive vessel palpation. Distorted tactile images are unwarped and processed by a learning model to estimate vascular deformation, enabling sensitive, spatially distributed tactile perception ...
Yupeng Wang +5 more
wiley +1 more source
Aspect angle dependence of the E region irregularity velocity at large flow angles [PDF]
, 2007 We present the Doppler velocity observations of 1-m plasma waves in the auroral E region by the Scandinavian Twin Auroral Radar Experiment (STARE) Norway VHF coherent radar in the context of simultaneous and coincident measurements of electron and ion ...
Senior, Andrew +5 more
core +4 more sources
Metasurface Doppler Cloak for Broadband Radar Stealth
Advanced Physics ResearchConcealing an aircraft is a multi‐faceted endeavor, notably involving radio and infrared frequencies. In a radar stealth context, it often translates to the reduction of the radar cross‐section (RCS).
Tanguy Lopez +3 more
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