Results 31 to 40 of about 15,554 (246)

A Fault-Tolerant Cooperative Positioning Approach for Multiple UAVs

IEEE Access, 2017
Due to the increasing potentials and benefits of unmanned aerial vehicles (UAVs) in civil and surveillance applications, the cooperative flight using multiple UAVs has attracted more and more attention. However, fault-tolerant cooperative positioning for
Yaohong Qu, Jizhi Wu, Bing Xiao, Dongli Yuan   +3 more
doaj   +1 more source

Assessing the accuracy of altitude estimates in avian biologging devices.

PLoS ONE, 2022
Advances in animal biologging technologies have greatly improved our understanding of animal movement and distribution, particularly for highly mobile species that travel across vast spatial scales.
Kimberly A Lato, Julia E F Stepanuk, Eleanor I Heywood, Melinda G Conners, Lesley H Thorne   +4 more
doaj   +1 more source

Implementation of a system for measuring the influence of the land urbanization level on the quality of determining positions in the GPS system

, 2022
W artykule zaprezentowano projekt układu do rejestrowania położenia bezwzględnego z wykorzystaniem systemu GPS, który umożliwił przeprowadzenie badań nad wpływem poziomu zurbanizowania terenu na jakość wyznaczania pozycji. W tym celu dokonano rejestracji
Bielawski, Antoni, Lazarowska, Agnieszka
core   +1 more source

Performance improvement of 5G positioning utilizing multi-antenna angle measurements

Satellite Navigation, 2022
Time delay-based the 5th Generation Mobile Communication Technology (5G) positioning is a main method to perform high-precision positioning in Global Navigation Satellite System (GNSS) denied areas.
Wenfei Guo, Yue Deng, Chi Guo, Shufeng Qi, Jingrong Wang   +4 more
doaj   +1 more source

A collaborative navigation method based on partnership optimisation for clustered aircraft

IET Radar, Sonar & Navigation, 2022
The collaborative exchange of information between members of a cluster can provide additional observations to improve the reliability of navigation. To address the problems of poor geometric configurations of satellites and low positioning accuracy of ...
Rong Wang, Xin Chen, Zhi Xiong, Huiyuan Zhang, Jianye Liu   +4 more
doaj   +1 more source

A New Array Pseudolites Technology for High Precision Indoor Positioning

IEEE Access, 2019
Global Satellite Navigation System (GNSS) can't provide normal location service in the indoor environment because the signal can be blocked by buildings. The pseudolites system can supplement GNSS, especially in the indoor environments.
Xingli Gan, Baoguo Yu, Xianpeng Wang, Yongqin Yang, Ruicai Jia, Heng Zhang, Chuanzhen Sheng, Lu Huang, Boyuan Wang   +8 more
doaj   +1 more source

GNSS Real–Time Precise Point Positioning in Arctic Northeast Passage

Journal of Marine Science and Engineering, 2022
Human activities in the Arctic regions have been increasing in recent years due to the impacts of climate change, such as Arctic Sea ice decline. For example, there has been an increase in Arctic shipping routes.
Mingwei Di, Bofeng Guo, Jie Ren, Xiang Wu, Zhaoyi Zhang, Yicheng Liu, Qingju Liu, Anmin Zhang   +7 more
doaj   +1 more source

Research on constrained localization of ultrasound geometric distribution based on FHN neurons

Science Progress, 2023
The autopilot positioning process is mainly affected by three aspects: the first is the spatial geometric distribution of positioning sensors; the second is the screening of spurious observations; and the third is the equivalent ranging error.
Weiwei Li, Sen Yuan, Zhou Xiaorong, Long Qin, Yue Xi   +4 more
doaj   +1 more source

A case report assessing the utility of a low-cost tracking GPS device for monitoring terrestrial mammal movements

Animal Biotelemetry, 2023
Background Accurate data on animal movements can highlight behavioural and ecological issues, such as territorial interactions, barriers to migration patterns, including compromised movement corridors, or avoidance of deteriorating habitats, and disease ...
Claire Moore, Julian Beaman, Marnie Brice, Karen Burke da Silva   +3 more
doaj   +1 more source

Clinical performance of the urine‐based TERT promoter AbsoluteQ Digital PCR for non‐invasive detection of bladder cancer

Molecular Oncology, EarlyView.
A urine‐based digital PCR assay targeting two hotspot TERT promoter variants detected bladder cancer with high sensitivity and no false positives in this case–control cohort. The streamlined AbsoluteQ workflow outperformed Sanger sequencing and supports non‐invasive molecular testing for bladder cancer detection.
Anna Nykel, Izabela Kubiak, Lena Rutkowska, Żaneta Kasprzyk, Łukasz Kępczyński, Michał Bednarek, Dariusz Sobieraj, Jacek Wilkosz, Piotr Kania, Adam Jędrzejczyk, Bogdan Kałużewski, Agnieszka Gach, Tadeusz Kałużewski   +12 more
wiley   +1 more source