Results 31 to 40 of about 4,400 (213)

Modeling and Simulation of GNSS-R Observables With Effects of Swell

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020
Global navigation satellite system-reflectometry (GNSS-R) has attracted much attention in remote sensing, such as sea wind speed detection, soil moisture, and sea ice.
Bowen Li, Lei Yang, Bo Zhang, Dongkai Yang, Di Wu   +4 more
doaj   +1 more source

Deformation monitoring using GNSS-R technology

Advances in Space Research, 2019
Abstract GNSS reflectometry (GNSS-R) has been widely studied in recent years for various applications, such as soil moisture monitoring, biomass analysis, and sea state monitoring. This paper presents the concept of a novel application of using GNSS-R technology for deformation monitoring.
Yang, Y, Zheng, Y, Yu, W, Chen, W, Weng, D   +4 more
openaire   +2 more sources

Wetland GNSS-R measurements from aircraft

2017 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2017
Characterizing, understanding, and projecting changes in atmospheric methane and terrestrial water storage require information about wetland dynamics, which remains a major gap in existing knowledge. Despite recent advances in satellite monitoring techniques, dynamic wetland mapping needs to be improved for more accurate global inventories and also to ...
E. Cardellach, F. Fabra, W. Li, S. Ribo, A. Fius, R. Shah, C. Chew, S. V. Nghiem, Maximilian Semmling   +8 more
openaire   +3 more sources

PARFAIT: GNSS-R coastal altimetry

, 2003
GNSS-R signals contain a coherent and an incoherent component. A new algorithm for coherent phase altimetry over rough ocean surfaces, called PARFAIT, has been developed and implemented in Starlab's STARLIGHT GNSS-R software package. In this paper we report our extraction and analysis of the coherent component of L1 GPS-R signals collected during the ...
Caparrini, M., Ruffini, L., Ruffini, G.
openaire   +2 more sources

Snow monitoring using GNSS-R techniques

2011 IEEE International Geoscience and Remote Sensing Symposium, 2011
GNSS-R techniques are currently being studied to remotely sense a number of geophysical parameters over different types of surfaces [1-6]. The Interference Pattern Technique (IPT) is based on the measurement of the interference pattern of the GPS direct and reflected signals, after reflecting over the surface, as the GPS satellites move.
Rodríguez Álvarez, Nereida, Aguasca Solé, Alberto, Valencia Domènech, Enric, Bosch Lluís, Xavier, Ramos Pérez, Isaac, Hyuk, Park, Camps Carmona, Adriano José, Vall-Llossera Ferran, Mercedes Magdalena   +7 more
openaire   +2 more sources

The Use of SMAP-Reflectometry in Science Applications: Calibration and Capabilities

Remote Sensing, 2019
The Soil Moisture Active Passive (SMAP) mission became one of the newest spaceborne Global Navigation Satellite System−Reflectometry (GNSS-R) missions collecting Global Positioning System (GPS) bistatic radar measurements when the band-pass center ...
Nereida Rodriguez-Alvarez, Sidharth Misra, Erika Podest, Mary Morris, Xavier Bosch-Lluis   +4 more
doaj   +1 more source

Crosstalk Statistics and Impact in Interferometric GNSS-R [PDF]

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2016
©2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component ...
Pascual Biosca, Daniel, Hyuk, Park, Onrubia Ibáñez, Raúl, Alonso Arroyo, Alberto, Querol Borràs, Jorge, Camps Carmona, Adriano José   +5 more
openaire   +3 more sources

Voxel‐SLAM: A Complete, Accurate, and Versatile Light Detection and Ranging‐Inertial Simultaneous Localization and Mapping System

Advanced Intelligent Systems, EarlyView.
: In this work, Voxel‐SLAM (simultaneous localization and mapping) is introduced: a complete, accurate, and versatile LiDAR (light detection and ranging) ‐inertial SLAM system consisting of five modules: initialization, odometry, local mapping (LM), loop closure (LC), and global mapping (GM), all employing the same map representation, an adaptive voxel
Zheng Liu, Haotian Li, Chongjian Yuan, Xiyuan Liu, Jiarong Lin, Rundong Li, Chunran Zheng, Bingyang Zhou, Wenyi Liu, Fu Zhang   +9 more
wiley   +1 more source

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

Artificial Intelligence in Autonomous Mobile Robot Navigation: From Classical Approaches to Intelligent Adaptation

Advanced Intelligent Systems, EarlyView.
Artificial intelligence (AI) is reshaping autonomous mobile robot navigation beyond classical pipelines. This review analyzes how AI techniques are integrated into core navigation tasks, including path planning and control, localization and mapping, perception, and context‐aware decision‐making. Learning‐based, probabilistic, and soft‐computing methods
Giovanna Guaragnella, Angelo Cardellicchio, Cosimo Patruno, Massimiliano Nitti, Nicola Pedrocchi, Vito Renò   +5 more
wiley   +1 more source