Results 21 to 30 of about 379,016 (254)

Backward-Emitting Silicon Nitride Optical Phased Array Enabling Efficient Wavelength-Tuned Beam Steering

IEEE Photonics Journal, 2020
Silicon nitride (SiN) optical phased arrays (OPAs) have emerged as a potential alternative to their silicon counterparts, due to their potential use in enhanced solid-state light detection and ranging.
Chul-Soon Im, Bishal Bhandari, Sung-Moon Kim, Min-Cheol Oh, Kyeong-Pyo Lee, Taehoon Kim, Sang-Shin Lee   +6 more
doaj   +1 more source

Deep Learning: Individual Maize Segmentation From Terrestrial Lidar Data Using Faster R-CNN and Regional Growth Algorithms

Frontiers in Plant Science, 2018
The rapid development of light detection and ranging (Lidar) provides a promising way to obtain three-dimensional (3D) phenotype traits with its high ability of recording accurate 3D laser points.
Shichao Jin, Shichao Jin, Yanjun Su, Shang Gao, Shang Gao, Fangfang Wu, Fangfang Wu, Tianyu Hu, Jin Liu, Wenkai Li, Dingchang Wang, Shaojiang Chen, Yuanxi Jiang, Yuanxi Jiang, Shuxin Pang, Qinghua Guo, Qinghua Guo   +16 more
doaj   +1 more source

Fast Phenomics in Vineyards: Development of GRover, the Grapevine Rover, and LiDAR for Assessing Grapevine Traits in the Field

Sensors, 2018
This paper introduces GRover (the grapevine rover), an adaptable mobile platform for the deployment and testing of proximal imaging sensors in vineyards for the non-destructive assessment of trunk and cordon volume and pruning weight.
Matthew H. Siebers, Everard J. Edwards, Jose A. Jimenez-Berni, Mark R. Thomas, Michael Salim, Rob R. Walker   +5 more
doaj   +1 more source

Ship Berthing Information Extraction System Using Three-Dimensional Light Detection and Ranging Data

Journal of Marine Science and Engineering, 2021
Safe and efficient berthing is essential to ensure maritime transportation and the safety of ships and ports. Three-dimensional (3D) light detection and ranging (LiDAR) can monitor and support ship berthing because it provides abundant target information
Chen Chen, Ying Li
doaj   +1 more source

Quantum Induced Coherence Light Detection and Ranging

Physical Review Letters, 2023
Quantum illumination has been proposed and demonstrated to improve the signal-to-noise ratio (SNR) in light detection and ranging (LiDAR). When relying on coincidence detection, such a quantum LiDAR is limited by the response time of the detector and suffers from jamming noise.
Gewei Qian, Xingqi Xu, Shun-An Zhu, Chenran Xu, Fei Gao, V. V. Yakovlev, Xu Liu, Shi-Yao Zhu, Da-Wei Wang   +8 more
openaire   +3 more sources

Multipath Estimation in Urban Environments from Joint GNSS Receivers and LiDAR Sensors

Sensors, 2012
In this paper, multipath error on Global Navigation Satellite System (GNSS) signals in urban environments is characterized with the help of Light Detection and Ranging (LiDAR) measurements. For this purpose, LiDAR equipment and Global Positioning System (
Antonio J. Fernández, Fabio Dovis, David De Castro, Xin Chen, Khurram Ali   +4 more
doaj   +1 more source

Scanning Angle Magnification with Compact Reflective Optics for Light Detection and Ranging

Photonics, 2022
The function of lidar requests a large scanning angle for a wide field of view and a well calibrated collimation of the laser beam for distant sensing.
Cheng-Ta Mu, Po-Cheng Chang, Cheng-Huan Chen   +2 more
doaj   +1 more source

Reflective Fiducials for Localization With 3D Light Detection and Ranging Scanners

IEEE Access, 2019
Fiducial markers are commonly used to localize robots. Most existing systems use standard cameras to detect simple patterns on flat tags. Since depth is not directly sensed, the pose must be inferred from the tag geometry.
Spencer Davis, Kenneth G. Ricks, Ryan A. Taylor   +2 more
doaj   +1 more source

Functional analysis of LIDAR technology in optimizing efficiency and sustainability in construction sector

Ain Shams Engineering Journal
The construction is fraught with growing environmental and efficiency issues contributing a significant percentage toward the use of energy worldwide and carbon emission.
Ahsan Waqar, Dorin Radu, Badr T. Alsulami, Branislav Đorđević, Ahmed Fathi Mohamed Salih Ebrahim, Hamad R. Almujibah   +5 more
doaj   +1 more source

Tree height inversion combining light detection and ranging and optical remote sensing data [PDF]

E3S Web of Conferences, 2020
Tree barriers in transmission line corridors are an important safety hazard.Scientific prediction of tree height and monitoring tree height changes are essential to solve this hidden danger.
Wang Kunlin, Ma Yi, Zhou Fangrong
doaj   +1 more source