Measurements of the Solid-body Rotation of Anisotropic Particles in 3D Turbulence [PDF]
, 2014 We introduce a new method to measure Lagrangian vorticity and the rotational dynamics of anisotropic particles in a turbulent fluid flow. We use 3D printing technology to fabricate crosses (two perpendicular rods) and jacks (three mutually perpendicular ...
Kramel, Stefan +4 more
core +1 more source
Quality Control for Ocean Current Measurement Using High-Frequency Direction-Finding Radar
Remote Sensing, 2023 High-frequency radars (HFRs) are important for remote sensing of the marine environment due to their ability to provide real-time, wide-coverage, and high-resolution measurements of the ocean surface current, wave height, and wind speed.
Shuqin He +6 more
doaj +1 more source
Usefulness of VRML building models in a direction finding context [PDF]
, 2007 This paper describes an experiment which aims to examine the effectiveness and efficiency of a Virtual Reality Modelling Language (VRML) building model compared with equivalent architectural plans, for direction finding purposes.
Mackey, D, Murano, P
core +1 more source
Performance analysis of rank reduction estimator in the presence of unexpected modeling errors
Tongxin xuebao, 2011 A performance analysis of the RARE was presented in presence of unexpected modeling errors.First,the closed-form expression of direction-finding（DF） error was given through the first-order Taylor series expansion of the spatial spectrum function,and then
WANG Ding, WU Ying
doaj +2 more sources
The Influence Of Propagation Environment On The Accuracy Of Emission Source Bearing
Metrology and Measurement Systems, 2015 This paper focuses on the radio direction finding (DF) in multipath environments. Based on the measurement results presented in the open literature, the authors analyse the influence of environment transmission properties on the spread of the signal ...
Ziółkowski Cezary, Kelner Jan Marcin
doaj +1 more source
IOAM: A Novel Sensor Fusion-Based Wearable for Localization and Mapping
Remote Sensing, 2022 With the development of indoor location-based services (ILBS), the dual foot-mounted inertial navigation system (DF-INS) has been extensively used in many fields involving monitoring and direction-finding.
Renjie Wu +6 more
doaj +1 more source
Biases in the perceived timing of perisaccadic perceptual and motor events [PDF]
, 2006 Subjects typically experience the temporal interval immediately following a saccade as longer than a comparable control interval. One explanation of this effect is that the brain antedates the perceptual onset of a saccade target to around the time of ...
B. Bridgeman +42 more
core +1 more source
On Calibration and Direction Finding with Uniform Circular Arrays
International Journal of Antennas and Propagation, 2019 Antenna array calibration methods and narrowband direction finding (DF) techniques will be outlined and compared for a uniform circular array. DF is stated as an inverse problem, which solution requires a parametric model of the array itself.
Stephan Häfner +2 more
doaj +1 more source
First-Order Peaks Determination for Direction-Finding High-Frequency Radar
Journal of Marine Science and Engineering, 2020 Direction-finding (DF) high-frequency radar (HFR) is preferred among the HFR family and is widely used around the world due to its compact structure.
Yeping Lai, Yuhao Wang, Hao Zhou
doaj +1 more source
Source Regions of the Type II Radio Burst Observed During a CME-CME Interaction on 2013 May 22
, 2016 We report on our study of radio source regions during the type II radio burst on 2013 May 22 based on direction finding (DF) analysis of the Wind/WAVES and STEREO/WAVES (SWAVES) radio observations at decameter-hectometric (DH) wavelengths.
M. J. Reiner +4 more
core +1 more source