Results 71 to 80 of about 13,896,765 (214)

Automated Lawn Maintenance: An Agronomic and Operational Review of Turf Health, Biodiversity, and Field Performance

Journal of Field Robotics, Volume 43, Issue 7, Page 4603-4623, October 2026.
ABSTRACT Grass mowing is one of the most resource‐consuming activities in green maintenance, whether in private areas such as home gardens or in public spaces like urban parks. In recent years, concerns related to climate change, human health, and sustainability have become increasingly prominent in green maintenance, leading manufacturers and industry
Andrea Palladini, Lorenzo Guerrini, Marco Fontanelli, Lucia Bortolini   +3 more
wiley   +1 more source

First In-Orbit Validation of Interferometric GNSS-R Altimetry: Mission Overview and Initial Results

Remote Sensing
Sea surface height (SSH) serves as a fundamental geophysical parameter in oceanographic research. In 2023, China successfully launched the world’s first spaceborne interferometric GNSS-R (iGNSS-R) altimeter, which features dual-frequency multi-beam ...
Yixuan Sun, Yueqiang Sun, Junming Xia, Lingyong Huang, Qifei Du, Weihua Bai, Xianyi Wang, Dongwei Wang, Yuerong Cai, Lichang Duan, Zhenhe Zhai, Bin Guan, Zhiyong Huang, Shizhong Li, Feixiong Huang, Cong Yin, Rui Liu   +16 more
doaj   +1 more source

Conceptual Issues Regarding the Development of Underground Railway Laser Scanning Systems

ISPRS International Journal of Geo-Information, 2015
Mobile Laser Scanning (MLS) systems are widely applied for spatial data collection and support applications in many aspects. In recent years, MLS technology had been introduced to railway applications and greatly enhanced the spatial detail and ...
Raymond Hung, Bruce King, Wu Chen
doaj   +1 more source

A Random Forest–Based Global Gridded Model for Vertical Correction of Precipitable Water Vapor Accounting for Nonlinear Vertical Variation

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 5, October 2026.
Abstract Vertical correction of precipitable water vapor (PWV) is a critical step in PWV fusion and atmospheric research. To address the limited accuracy of traditional global‐scale PWV vertical correction models that do not explicitly account for nonlinear vertical variations, we developed RF‐PWV, a global 1° × 1° PWV vertical correction model based ...
Junyu Li, Mingxun Zhang, Liying Cao, Lilong Liu, Bao Zhang, Yibin Yao, Liangke Huang   +6 more
wiley   +1 more source

Performance Analysis of Internet-based DGPS and Commercial Satellite-based Augmentation System: A Case Study in Peninsular Malaysia

Journal of Engineering Technology and Applied Physics
Global Navigation Satellite Systems (GNSS) has become an essential component in modern times for positioning, navigation, and timing. A fast-growing economic region in Malaysia required a GNSS-based augmentation positioning and navigation service.
Ooi Wei Han, Noor Azawani Wahap, Shahrizal Ide Moslin, Wan Aminullah, Tajul Ariffin Musa, Muhammad Syazwan Ab Razak, Lee Hong Sheng, Wan Anom Wan Aris   +7 more
doaj   +1 more source

Along‐Strike Coupling Heterogeneity in Cascadia's Slow‐Slip Zone Constrained by GNSS and Reduced‐Order Rate‐And‐State Friction Modeling

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract Slow slip events (SSEs) in the Cascadia subduction zone exhibit along‐strike segmentation, where the central segment has longer recurrence intervals but smaller moments. We quantify the controls on this variability by combining geodetic inter‐SSE coupling inversion with Bayesian inference of a quasi‐dynamic rate‐and‐state friction SSE‐cycle ...
Yohai Magen, Alice‐Agnes Gabriel, Dave A. May   +2 more
wiley   +1 more source

Aseismic Slip Along the Evaporite‐Rich Strike‐Slip Katouna‐Stamna Fault in Greece

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract Aseismic slip has been observed on many active faults globally, but its controlling mechanisms remain unclear. This study focuses on the NW‐striking, left‐lateral Katouna‐Stamna Fault in Western Greece. We use InSAR surface deformation measurements to confirm the presence of aseismic slip and compare this behavior with structural evidence from
Joel Szrek, Silvia Crosetto, Sabrina Metzger, Giorgio Gomba, Claudio Faccenna, Romain Jolivet   +5 more
wiley   +1 more source

GNSS sequence extraction and reuse for navigation

, 2022
S.2731-2747Global navigation satellite system (GNSS) transmit signals with code-division multiple access (CDMA) sequences. A receiver should know these sequences such that the signal can be extracted and used for positioning, navigation, and timing (PNT).
Bartl, S.M., Berglez, P., Rossouw van der Merwe, J., Rügamer, A., Popugaev, A., Felber, W., O'Driscoll, C., Förster, F.   +7 more
core   +1 more source

CELESTIAL NAVIGATION AS THE EMERGENCY GNSS BACKUP: ENHANCING NAVIGATIONAL RELIABILITY

Scientific Journal of Gdynia Maritime University
The development of Global Navigational Satellite Systems (GNSS) has revolutionised navigation on ships. GNSS, together with electronic chart display information system (ECDIS), has made navigation more accurate, efficient, and safer for sailors. However
Ihor Liubarets
doaj   +1 more source

Impacts of Mid‐Latitude Ionospheric Dynamics on RF Applications During the November 2025 Superstorm Event

Geophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract This study demonstrates the intriguing and complex interplay among auroral precipitation, enhanced TEC, density irregularities, and amplitude scintillations observed during the November 2025 superstorm. For the first time, we present observations of strong amplitude scintillation across continental United States (CONUS)—nearly from coast to ...
E. Yizengaw, W. Younas, Y. Nishimura, C. Gabrielse, T. Beach, A. J. Coster, R. Pradipta, K. M. Groves   +7 more
wiley   +1 more source