Results 31 to 40 of about 6,517,222 (273)

Antenna Characteristics Contributions to the Improvement of UWB Real-Time Locating Systems’ Reading Range and Multipath Mitigation

IEEE Access, 2023
Indoor object localization and positioning is part of the space-awareness concept which has seen a rising popularity in recent Internet of Things (IoT) research and applications.
Amina Benouakta, Fabien Ferrero, Leonardo Lizzi, Robert Staraj   +3 more
doaj   +1 more source

Critical Facets of European Corn Borer Adult Movement Ecology Relevant to Mitigating Field Resistance to Bt-Corn

Insects
The European corn borer (Ostrinia nubilalis, Hübner) has been managed successfully in North America since 1996 with transgenic Bt-corn. However, field-evolved resistance to all four available insecticidal Bt proteins has been detected in four provinces ...
Thomas W. Sappington
doaj   +1 more source

Gravitational Acceleration of Spinning Bodies From Lunar Laser Ranging Measurements [PDF]

, 2002
The Sun's relativistic gravitational gradient accelerations of Earth and Moon, dependent on the motions of the latter bodies, act upon the system's internal angular momentum.
A. Papapetrou, J. G. Williams, J. G. Williams, J. O. Dickey, K. Nordtvedt, K. Nordtvedt, K. Nordtvedt, Kenneth Nordtvedt   +7 more
core   +2 more sources

Correlated Photon Lidar Based on Time-Division Multiplexing

Photonics
Single-photon lidar (SPL) exhibits high sensitivity, making it particularly suitable for detecting weak echoes over long distances. However, its susceptibility to background noise necessitates the implementation of advanced filtering techniques and ...
Yun Jiang, Bo Liu, Zixun Wang, Fengyun Huang, Taibei Liu, Lan Luo, Feifan He, Yongqi Yang, Bin Zhao   +8 more
doaj   +1 more source

Method for joint flexion angle estimation using UWB ranging with clock model compensation

Automatika, 2020
This paper presents a wearable system for measurement and monitoring human body joint angles based on UWB ranging. The DW1000 chip was used with standard deviation of distance measurement within 10 cm with range up to 70 m.
Hrvoje Mihaldinec, Hrvoje Dzapo
doaj   +1 more source

Research on an LEO Constellation Multi-Aircraft Collaborative Navigation Algorithm Based on a Dual-Way Asynchronous Precision Communication-Time Service Measurement System (DWAPC-TSM)

Sensors, 2022
In order to solve the collaborative navigation problems in challenging environments such as insufficient visible satellites, obstacle reflections and multipath errors, and in order to improve the accuracy, usability, and stability of collaborative ...
Lvyang Ye, Yikang Yang, Jiangang Ma, Lingyu Deng, Hengnian Li   +4 more
doaj   +1 more source

Ranging code processor [PDF]

, 1970
System extracts range data from pseudorandom-coded range radar used to track a moving body. Pseudorandom binary waveforms with favorable correlation properties are transmitted and their reflections received and processed. The phase difference between the
Anderson, T. O.
core   +1 more source

A Quality Improvement Initiative to Standardize Pneumocystis jirovecii Pneumonia Prophylaxis in Pediatric Patients With Solid Tumors

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Pediatric patients with extracranial solid tumors (ST) receiving chemotherapy are at an increased risk for Pneumocystis jirovecii pneumonia (PJP). However, evidence guiding prophylaxis practices in this population is limited. A PJP‐related fatality at our institution highlighted inconsistent prescribing approaches and concerns about
Kriti Kumar, Denise M. Connolly, Ellen Kellington, Elyse Zelunka, Karla Kerrigan, Furqan Shaikh, Paul C. Nathan, Meredith S. Irwin, Sarah Cohen‐Gogo   +8 more
wiley   +1 more source

Simplified Beam Steering and Fast Error Compensation of Optical Phased Arrays by Using a Novel Weighted-Grouping Algorithm

IEEE Access
Optical phased arrays (OPAs) serve as pivotal components for non-mechanical beam steering and find relevance in various applications. However, they necessitate correction of optical phase errors within the antenna array, arising from fabrication ...
N. S. R. Gayatri, Yi-Hsuan Lin, Silvano Donati, San-Liang Lee   +3 more
doaj   +1 more source

Multipurpose Laser Instrument for Interplanetary Ranging, Time Transfer, and Wideband Communications

Photonics, 2023
In this paper, we discuss the design and feasibility of a multifunctional laser instrument capable of precision ranging, time transfer, and wideband communications over interplanetary distances throughout our solar system.
John J. Degnan
doaj   +1 more source