Results 21 to 30 of about 19,815 (237)

Inherent Limitations of Smartphone GNSS Positioning and Effective Methods to Increase the Accuracy Utilizing Dual-Frequency Measurements

open access: yesSensors, 2022
Xiaomi Mi8 with a Broadcom BCM47755 chip, an Android smartphone that supports multi-constellation (GPS, GLONASS, Galileo, BeiDou, and QZSS) and dual-frequency (L1/E1 and L5/E5), was launched in May 2018.
Jeonghyeon Yun   +2 more
doaj   +1 more source

IZO/ITO Double-Layered Transparent Conductive Oxide for Silicon Heterojunction Solar Cells

open access: yesIEEE Access, 2022
Zinc-doped indium oxide (IZO)+ tin-doped indium oxide (ITO) is proposed in this study as a double-layered transparent conductive oxide (TCO) for the application of silicon heterojunction (SHJ) solar cells.
Doowon Lee, Ahreum Lee, Hee-Dong Kim
doaj   +1 more source

The droning of the drones

open access: yesScilight, 2022
New measurement setup can gauge noise emissions from drones and ...
openaire   +1 more source

Signal Expansion Method in Indoor FMCW Radar Systems for Improving Range Resolution

open access: yesSensors, 2021
As various unmanned autonomous driving technologies such as autonomous vehicles and autonomous driving drones are being developed, research on FMCW radar, a sensor related to these technologies, is actively being conducted. The range resolution, which is
Seongmin Baek, Yunho Jung, Seongjoo Lee
doaj   +1 more source

Intelligent Video Data Security: A Survey and Open Challenges

open access: yesIEEE Access, 2021
A range of video contents and technology have provided convenience to humans, with real-time video applications-such as surveillance applications-able to contribute to increasing public safety by reducing physical crimes.
Jin-Yong Yu, Yujun Kim, Young-Gab Kim
doaj   +1 more source

Review on the Advancements in Wind Turbine Blade Inspection: Integrating Drone and Deep Learning Technologies for Enhanced Defect Detection

open access: yesIEEE Access
The increasing demand for wind power requires more frequent inspections to identify defects in the Wind Turbine Blades (WTBs). These defects, if not detected, can compromise the structural integrity and safety of wind turbines.
Majid Memari   +4 more
doaj   +1 more source

Expanding Electric and Vehicle-Based Solar Transit Options with Breakthrough Vehicular Efficiencies

open access: yesWorld Electric Vehicle Journal
Traditional approaches to overcoming energy loss from resistances of vehicular transit velocities have focused primarily on reducing aerodynamic drag through streamlining air flow.
Adam B. Suppes, Galen Suppes
doaj   +1 more source

Vision-Based Relative Pose Estimation of Non-Cooperative Spacecraft Using Time-of-Flight Camera

open access: yesIEEE Access
This paper deals with a vision-based pose estimation of a target using a time-of-flight (ToF) camera. In particular, a relative pose estimation algorithm for non-cooperative targets that lack markers or accessible sensor is proposed. The proposed method,
Sangdo Park   +3 more
doaj   +1 more source

DVS: A Drone Video Synopsis towards Storing and Analyzing Drone Surveillance Data in Smart Cities

open access: yesSystems, 2022
The commercialization and advancement of unmanned aerial vehicles (UAVs) have increased in the past decades for surveillance. UAVs use gimbal cameras and LIDAR technology for monitoring as they are resource-constrained devices that are composed of ...
Palash Yuvraj Ingle   +2 more
doaj   +1 more source

Calling time on the imperial lawn and the imperative for greenhouse gas mitigation

open access: yesGlobal Sustainability, 2023
Non-technical summary As green spaces, lawns are often thought to capture carbon from the atmosphere. However, once mowing, fertlising and irrigation are taken into account, we show that they become carbon sources, at least in the long run.
Len N. Gillman   +2 more
doaj   +1 more source

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