Results 41 to 50 of about 15,182,981 (294)

Review of Assimilating Spaceborne Global Navigation Satellite System Remote Sensing Data for Tropical Cyclone Forecasting

Remote Sensing
Global Navigation Satellite System (GNSS) Radio Occultation (RO) and GNSS Reflectometry (GNSS-R) are the two major spaceborne GNSS remote sensing (GNSS-RS) techniques, providing observations of atmospheric profiles and the Earth’s surface. With the rapid
Weihua Bai, Guanyi Wang, Feixiong Huang, Yueqiang Sun, Qifei Du, Junming Xia, Xianyi Wang, Xiangguang Meng, Peng Hu, Cong Yin, Guangyuan Tan, Ruhan Wu   +11 more
doaj   +1 more source

Push the Limits: Human‐Like Multimodal Extreme Embodied Intelligence for Autonomous Racing

Advanced Robotics Research, EarlyView.
Autonomous racing tests embodied intelligence under extreme control limits of speed, actuation, and decision‐making. Inspired by human multimodality, we present Apex, an embodied agent deployed on a super‐formula racing car at Yas Marina. Integrating physics‐informed perception, multimodal learning, and tasking, Apex cuts lap times by 15% and achieves ...
Yanxin Zhou, Baichuan Lou, Wenhui Huang, Binbin Hu, Haohan Yang, Haochen Liu, Xiangkun He, Chee Kiong Ong, Yiran Zhang, Tianchu Su, Bolin Zhao, Xiaoyu Mo, Holden King Ho Li, Chen Lv   +13 more
wiley   +1 more source

Ocean Remote Sensing Using Spaceborne GNSS-Reflectometry: A Review

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Spaceborne global navigation satellite system reflectometry (GNSS-R) is an emerging remote sensing technology that utilizes Earth surface reflections of GNSS signals to monitor geophysical parameters.
Jinwei Bu, Xinyu Liu, Qiulan Wang, Linghui Li, Xiaoqing Zuo, Kegen Yu, Weimin Huang   +6 more
doaj   +1 more source

GNSS signal acquisition in the presence of sign transitions [PDF]

, 2009
The next generation of Global Navigation Satellite Systems (GNSS), such as Galileo [1] and GPS modernization [2], will use signals with equal code and bit periods, which will introduce a potential sign transition in each segment of the signal processed ...
Kewen Sun, SUN, KEWEN, Lo Presti, Letizia, Fantino, Maurizio   +3 more
core  

Spaceborne GNSS Reflectometry

Remote Sensing, 2022
This article presents a review on spaceborne Global Navigation Satellite System Reflectometry (GNSS-R), which is an important part of GNSS-R technology and has attracted great attention from academia, industry and government agencies in recent years ...
Kegen Yu, Shuai Han, Jinwei Bu, Yuhang An, Zhewen Zhou, Changyang Wang, Sajad Tabibi, Joon Wayn Cheong   +7 more
doaj   +1 more source

Altimetry with GNSS-R interferometry: First proof of concept experiment [PDF]

, 2011
The Global Navigation Satellite System Reflectometry (GNSS-R) concept was conceived as a means to densify radar altimeter measurements of the sea surface. Until now, the GNSS-R concept relied on open access to GNSS transmitted codes.
Rius, Antonio, Bas Altena, Ribó Vedrilla, Serni, van Bree, R., Altena, B., Martín-Neira, M. (author), Enric Valencia, Manuel Martín-Neira, Estel Cardellach, Rius, A. (author), Camps, A. (author), Nogués-Correig, O. (author), Antonio Rius, Oliveras, S. (author), Van Bree, R. (author), Camps Carmona, Adriano José, Hyuk Park, Adriano Camps, Park, H. (author), Hyuk, Park, Roel van Bree, Van der Marel, H. (author), Cardellach, Estel, Cardellach, E. (author), Tarongí Bauzá, José Miguel, Nogués Correig, O., Serni Ribó, Hans van der Marel, Valencia Domènech, Enric, Ribó, S. (author), Tarongi, J.M. (author), Oleguer Nogués-Correig, Oliveras, S., José Miguel Tarongí, Altena, B. (author), Martín Neira, Manuel, Valencia, E. (author), Van Der Marel, H., Santi Oliveras   +38 more
core   +2 more sources

Robotics in Ionizing Radiation Environments: Vulnerabilities, Hardening, and Future Directions

Advanced Robotics Research, EarlyView.
Radiation exposure causes cumulative degradation in robotic sensors, actuators, and electronic logic, often leading to undetected failures. This study maps component vulnerabilities, evaluates hardening and shielding strategies, and identifies testing gaps that must be addressed to enable next‐generation radiation‐tolerant robotic systems.
Francis A. K. Djirackor, Josephine T. Djirackor, Amanuel Abrdo Tereda, Sun Yi, Younho Seong   +4 more
wiley   +1 more source

Remote Sensing of Soil Moisture and Vegetation Status Using Space-Borne GNSS-R Observations [PDF]

ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Recently, GNSS Reflectometry (GNSS-R) has gained increasing attention for remote sensing and hydrological applications, particularly in monitoring soil moisture and vegetation status.
M. Rahmani, J. Asgari
doaj   +1 more source

From GPS Receiver to GNSS Reflectometry Payload Development for the Triton Satellite Mission

Remote Sensing, 2021
The global positioning system (GPS) receiver has been one of the most important navigation systems for more than two decades. Although the GPS system was originally designed for near-Earth navigation, currently it is widely used in highly dynamic ...
Yung-Fu Tsai, Wen-Hao Yeh, Jyh-Ching Juang, Dian-Syuan Yang, Chen-Tsung Lin   +4 more
doaj   +1 more source

IGS-MGEX: Preparing the Ground for Multi-Constellation GNSS Science [PDF]

, 2013
With a total of four new and emerging constellations (BeiDou, Galileo, QZSS, IRN SS) as well as the ongoing modernization of GPS and GLONASS the world of satellite navigation presently experiences dramatic changes.
Langley, Richard, Weber, Georg, Steigenberger, Peter, Hugentobler, Urs, Montenbruck, Oliver, Khachikyan, Robert, Mervart, Leos   +6 more
core