Results 11 to 20 of about 2,572,860 (288)
Methods of Precise Distance Measurements for Laser Rangefinders with Digital Acquisition of Signals. [PDF]
Sensors (Basel), 2021 Muzal M +4 more
europepmc +2 more sources
Improved Acoustic Thermometry for Long-Distance Temperature Measurements
Sensors, 2023 Accurate measurements of long distances (in the order of tens of meters or more) are necessary in manufacturing processes of large structures, as, for example, in the aerospace industry.
Marco Pisani +2 more
doaj +1 more source
Uncertainty in Measurements of Distance [PDF]
, 2002 Ng and van Dam have argued that quantum theory and general relativity give a lower bound of L^{1/3} L_P^{2/3} on the uncertainty of any distance, where L is the distance to be measured and L_P is the Planck length.
John C Baez +3 more
core +3 more sources
On Pulsar Distance Measurements and their Uncertainties [PDF]
, 2012 Accurate distances to pulsars can be used for a variety of studies of the Galaxy and its electron content. However, most distance measures to pulsars have been derived from the absorption (or lack thereof) of pulsar emission by Galactic HI gas, which ...
A. A. Chael +38 more
core +3 more sources
Performance of an Ultrasonic Ranging Sensor in Apple Tree Canopies
Sensors, 2011 Electronic canopy characterization is an important issue in tree crop management. Ultrasonic and optical sensors are the most used for this purpose. The objective of this work was to assess the performance of an ultrasonic sensor under laboratory and ...
Alexandre Escolà +8 more
doaj +1 more source
A vectorial tree distance measure [PDF]
Scientific Reports, 2021 Abstract A vectorial distance measure for trees is presented. Given two trees, we define a Tree-Alignment (T-Alignment). We T-align the trees from their centers outwards, starting from the root-branches, to make the next level as similar as possible.
Avner Priel, Boaz Tamir
openaire +3 more sources
Sensors, 2018 Kinematic laser scanning with moving platforms has been used for the acquisition of 3D point clouds of our environment for many years. A main application of these mobile systems is the acquisition of the infrastructure, e.g., the road surface and ...
Erik Heinz +3 more
doaj +1 more source
Clinical determination of the occlusal plane and its relation with orofacial measurements [PDF]
Al-Rafidain Dental Journal, 2007 Aims: To determine the level and angulation of the occlusal plane of the artificial dental arch by measuring the level and angulation of the occlusal plane of completely dentulous subjects and to find the relation of these measurements to some of the ...
Zeina M Ahmad +2 more
doaj +1 more source
A Novel Three-Head Ultrasonic System for Distance Measurements Based on the Correlation Method
Measurement Science Review, 2014 A novel double-emitter ultrasonic system for distance measurements based on the correlation method is presented. The proposed distance measurement method may be particularly useful in difficult conditions, e.g.
Gądek Krzysztof +2 more
doaj +1 more source
Research on an improved leader-follower cooperative navigation technology [PDF]
Zhihui kongzhi yu fangzhen, 2023 To improve the positioning accuracy of the followers in leader-follower cooperative navigation algorithm for multi-USVs based on distance measurement, this algorithm integrates the distance measurements between the followers into the traditional leader ...
CHEN Dongyu
doaj +1 more source