Results 121 to 130 of about 18,906 (222)

On the solar chromosphere observed at the limb with Hinode

, 2010
Broad-band images in the Ca II H line, from the BFI instrument on the Hinode spacecraft, show emission from spicules emerging from and visible right down to the observed limb.
Carlsson, Mats, Judge, Philip G.
core   +1 more source

Three-Dimensional Human Pose Estimation from Micro-Doppler Signature Based on SISO UWB Radar

Remote Sensing
In this paper, we propose an innovative approach for transforming 2D human pose estimation into 3D models using Single Input–Single Output (SISO) Ultra-Wideband (UWB) radar technology.
Xiaolong Zhou, Tian Jin, Yongpeng Dai, Yongping Song, Kemeng Li   +4 more
doaj   +1 more source

A Hot Microflare Observed With RHESSI and Hinode

, 2008
RHESSI and Hinode observations of a GOES B-class flare are combined to investigate the origin of 15 MK plasma. The absence of any detectable hard X-ray emission coupled with weak blueshifted emission lines (indicating upward velocities averaging only 14 ...
Brosius, Doschek, Hannah, Klimchuk, Milligan, Milligan, Patsourakos, Phillips, Ryan O. Milligan, Tsuneta   +9 more
core   +1 more source

Indoor Human Motion Recognition Based on FMCW Radar and Threshold Comparison Algorithm

IEEE Access
Radar technology, particularly frequency-modulated continuous wave (FMCW) radar, has garnered attention in the field of smart home monitoring owing to its high sensitivity, long-range surveillance capabilities, and privacy-preserving characteristics ...
Ruoyu He, Masaki Kurosawa, Guanghao Sun
doaj   +1 more source

Activity Recognition Based on Micro-Doppler Signature with In-Home Wi-Fi [PDF]

, 2016
Device free activity recognition and monitoring has become a promising research area with increasing public interest in pattern of life monitoring and chronic health conditions. This paper proposes a novel framework for inhome Wi-Fi signal-based activity
Chen, Q, Chetty, K, Tan, B, Woodbridge, K   +3 more
core  

Multi-band optical-NIR variability of blazars on diverse timescales

, 2015
To search for optical variability on a wide range of timescales, we have carried out photometric monitoring of two flat spectrum radio quasars, 3C 454.3 and 3C 279, plus one BL Lac, S5 0716+714, all of which have been exhibiting remarkably high activity ...
Agarwal, Aditi, Bachev, R., Boeva, S., Bottcher, M., Gaur, H., Gu, M. F., Gupta, Alok C., Ibryamov, S., Pandey, U. S., Peneva, S., Semkov, E., Strigachev, A., Wiita, Paul J.   +12 more
core   +1 more source

Radar UAV and bird signature comparisons with micro-Doppler [PDF]

, 2021
Ritchie, M, Peters, N, Horne, C
openaire   +2 more sources

A holistic human activity recognition optimisation using AI techniques

IET Radar, Sonar & Navigation
Building on previous radar‐based human activity recognition (HAR), we expand the micro‐Doppler signature to 6 domains and exploit each domain with a set of handcrafted features derived from the literature and our patents.
Zhenghui Li, Yushi Liu, Bo Liu, Julien Le Kernec, Shufan Yang   +4 more
doaj   +1 more source

Micro-Doppler signature analysis for target classification

, 2023
El efecto micro-Dopppler es el fenómeno observado en las señales radar de retorno de un objeto formado por partes móviles. Este efecto es representado por las firmas micro-Doppler, las cuales contienen abundante información sobre el objeto irradiado con radar.
openaire   +1 more source

Comparative Analysis of Audio Processing Techniques on Doppler Radar Signature of Human Walking Motion Using CNN Models. [PDF]

Sensors (Basel), 2023
Ha MK, Phan TL, Nguyen DHH, Quan NH, Ha-Phan NQ, Ching CTS, Hieu NV.   +6 more
europepmc   +1 more source