Results 11 to 20 of about 794,576 (207)
VHF coherent radar signals from the E region ionosphere and the relationship to electron drift velocity and ion acoustic velocity [PDF]
, 2002 The Scandinavian Twin Auroral Radar Experiment (STARE) coherent radar system measures the Doppler shifts caused by ∼1 m plasma waves in the high-latitude E region ionosphere.
Nielsen, E. +2 more
core +5 more sources
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
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
core +6 more sources
On the Doppler effect in radar
Radiotekhnika, 2021 The possibilities of simultaneous use of the longitudinal and transverse Doppler effects have been analyzed, and expressions have been derived for the corresponding beat frequencies between the emitted and received signals. As a rule, only the longitudinal Doppler effect is used in modern radio engineering systems, which makes it possible to determine
O.V. Ryazantsev +2 more
openaire +4 more sources
The Doppler Characteristics of Sea Echoes Acquired by Motion Radar
Remote Sensing, 2023 The Doppler characteristics of sea surface echoes reflect the time-varying characteristics of the sea surface and can be used to retrieve ocean dynamic parameters and detect targets.
Pengbo Du +6 more
doaj +1 more source
Multi-Doppler resolution automotive radar [PDF]
2017 25th European Signal Processing Conference (EUSIPCO), 2017 Publication in the conference proceedings of EUSIPCO, Kos island, Greece ...
Oded Bialer, Sammy Kolpinizki
openaire +3 more sources
Applied Sciences, 2020 The feasibility study of a 24 GHz industrial, scientific, and medical (ISM) band Doppler radar antenna in electromagnetic aspects is numerically performed for near-field sensing of human respiration.
Seungyong Park +4 more
doaj +1 more source
Monitoring and Analysis of Respiratory Patterns Using Microwave Doppler Radar
IEEE Journal of Translational Engineering in Health and Medicine, 2014 Noncontact detection characteristic of Doppler radar provides an unobtrusive means of respiration detection and monitoring. This avoids additional preparations, such as physical sensor attachment or special clothing, which can be useful for certain ...
Yee Siong Lee +3 more
doaj +1 more source
Airborne Radar Staggered PRF Coherent Processing Method for Down-Looking Target Detection
Remote Sensing, 2023 Airborne radar plays a crucial role in detecting aerial targets, but its detection capability can be significantly affected by strong ground clutter when operating in down-looking mode.
Xiping Sun +4 more
doaj +1 more source
Foot Gesture Recognition Using High-Compression Radar Signature Image and Deep Learning
Sensors, 2021 Recently, Doppler radar-based foot gesture recognition has attracted attention as a hands-free tool. Doppler radar-based recognition for various foot gestures is still very challenging. So far, no studies have yet dealt deeply with recognition of various
Seungeon Song +3 more
doaj +1 more source