Results 121 to 130 of about 4,561,256 (335)

Moving target detection based on velocity compensation methods in a coherent continuous wave lidar

The Journal of Engineering, 2019
Light Detection and Ranging (lidar) technology has been applied in military and civil areas and shows great potential. However, in coherent lidar detection, significant Doppler Effect and velocity uncertainty result a bad influence on moving target ...
Huixin Huang, Chi Xu, Linghao Xia, Cheng Wu   +3 more
doaj   +1 more source

The doppler shift transient field method

Progress in Particle and Nuclear Physics, 2001
Abstract A novel method to measure the magnetic moments of subpico-second high-spin states via the precession in a transient magnetic field is proposed, which avoids the uncertainties of delayed side and cascade feedings inherent in heavy-ion compound reactions.
openaire   +2 more sources

Self‐Assembled Telecom Color Centers in Silicon and Their Growth Environment

Advanced Physics Research, EarlyView.
Influence of the growth pressure during the formation of self‐assembled color centers in silicon grown by molecular beam epitaxy at ultra‐low temperatures on the color center's photoluminescence spectral signature. The growth pressure crucially determines color center selectivity, as evidenced by G‐centers, W‐centers, and T‐centers, matrix purity, and ...
Jacqueline Marböck, Enrique Prado Navarrete, Merve Karaman, Oliver E. Lang, S. Mijatovic, Thomas Fromherz, Maciej O. Liedke, Andreas Wagner, Moritz Brehm, Johannes Aberl   +9 more
wiley   +1 more source

Optical torque reversal and spin-orbit rotational Doppler shift experiments.

Optics Express, 2015
We report on optical rotational Doppler frequency shift experiments in the context of a counter-intuitive optomechanical phenomenon that is the angular analog of so-called negative optical radiation forces, which involves spin-orbit scattering of light ...
D. Hakobyan, E. Brasselet
semanticscholar   +1 more source

Computational fluid dynamics simulations of airflow through the nasal passages of rhinolophoid bats

The Anatomical Record, EarlyView.
Abstract The nasal passages of bats that emit their echolocation call through their nostrils have adapted for sound emission as well as standard respiratory and olfactory functions. Rhinolophids, hipposiderids and rhinonycterids all use a high duty cycle (HDC) echolocation strategy.
Carley Goodwin, Jason M. Bourke, Daisuke Koyabu, Kyle N. Armstrong, Vuong T. Tu, Thongchai Ngamprasertwong, Thanakul Wannaprasert, Laura A. B. Wilson   +7 more
wiley   +1 more source

Tracheal chambers as a key innovation for high‐frequency emission in bat echolocation

The Anatomical Record, EarlyView.
Abstract Key innovations are pivotal for biodiversity and facilitating evolutionary success, enabling organisms' adaptation to various ecological niches through the diversification of phenotypic traits. In mammals, notable adaptations include evolving hypsodonty for grazing on grasses and, for bats, evolving echolocation and wing acquisition.
Nicolas L. M. Brualla, Laura A. B. Wilson, Khizar Hayat, Michael Doube, Vuong Tan Tu, Thongchai Ngamprasertwong, Thanakul Wannaprasert, Daisuke Koyabu   +7 more
wiley   +1 more source

Integrated Clinical and Proteomic Profiling of CD19 Chimeric Antigen Receptor T Cell Therapy in Progressive Systemic Sclerosis

Arthritis &Rheumatology, EarlyView.
Objective To characterize the clinical, immunologic, and proteomic changes associated with CD19 chimeric antigen receptor T cell therapy in patients with progressive systemic sclerosis (SSc). Methods Patients with progressive SSc received CD19 chimeric antigen receptor (CAR)‐T cell therapy and were observed longitudinally for safety, clinical efficacy,
Chenhan Jia, Wanyi Lin, Zhangyi Zhao, Fenglin Wu, Chaoyu Gu, Yuankai Sun, Zhe Ding, Chang Wei, Xinyu Li, Cuiwei Xie, Peng Xia, Zhen Xia, Xuesong Liu, Shaoying Yang, Chunyan Zhang, Hanlin Yin, Liangjing Lu   +16 more
wiley   +1 more source

The application of laser doppler technique to vibration measurement and position control. [PDF]

The laser Doppler interferometer reported here was developed to investigate the possibilities of remote vibration and motion measurements. The method is noncontacting and operates with unprepared targets, using the diffusely scattered light to measure ...
Pleydell, Mark Edward
core   +3 more sources

EBHIS Local Volume Galaxy Hi Survey (LVGHIS)

Astronomische Nachrichten, EarlyView.
ABSTRACT Here, we present the “Local Volume Galaxy Hi Survey” (LVGHIS). It is based on the first data release of the Milky Way portion of the Effelsberg Bonn Hi‐Survey (EBHIS). We homogeneously measured the mass and dynamics of the local volume galaxies within the radial velocity limit of |vLSR|≤600kms−1$$ \mid {v}_{\mathrm{LSR}}\mid \le 600\kern0.6em \
V. A. Schulz, J. Kerp, A. C. Schröder, B. Winkel   +3 more
wiley   +1 more source

The Novel Nonlinear Adaptive Doppler Shift Estimation Technique and the Coherent Doppler Lidar System Validation Lidar [PDF]

, 2006
The signal processing aspect of a 2-m wavelength coherent Doppler lidar system under development at NASA Langley Research Center in Virginia is investigated in this paper.
Beyon, Jeffrey Y., Koch, Grady J.
core