Results 41 to 50 of about 220,608 (333)

A Comparative Analysis of Multi-Epoch Double-Differenced Pseudorange Observation and Other Dual-Satellite Lunar Global Navigation Systems

Aerospace, 2021
In this study, dual-satellite lunar global navigation systems that consist of a constellation of two navigation satellites providing geo-spatial positioning on the lunar surface were compared.
Toshiki Tanaka, Takuji Ebinuma, Shinichi Nakasuka, Heidar Malki   +3 more
doaj   +1 more source

A flexible implementation of a Global Navigation Satellite System receiver for on-board satellite navigation [PDF]

, 2010
In this paper, we present the implementation of the acquisition algorithm of a versatile Global Navigation Satellite System (GNSS) receiver for satellite applications. For versatility purpose, the choice of the receiver algorithms has been motivated by 1)
Boutillon, Emmanuel, Calmettes, Vincent, Dion, Arnaud, Liegeon, Emmanuel   +3 more
core   +1 more source

Retrieving Precipitable Water Vapor From Shipborne Multi‐GNSS Observations [PDF]

, 2019
©2019. American Geophysical UnionPrecipitable water vapor (PWV) is an important parameter for climate research and a crucial factor to achieve high accuracy in satellite geodesy and satellite altimetry. Currently Global Navigation Satellite System (GNSS)
Ge, Maorong, Gerland, Sebastian, Ramatschi, Markus, Schuh, Harald, Semmling, Maximilian, Wang, Jungang, Wickert, Jens, Wu, Zhilu, Zus, Florian   +8 more
core   +1 more source

Characterizing extreme drought and wetness in Guangdong, China using global navigation satellite system and precipitation data

Satellite Navigation
As global temperature rises, the frequency of extreme climate events, e.g., severe droughts and floods, has increased significantly and caused severe damage over the past years. To this regard, precipitation efficiency, a crucial meteorological parameter,
Hai Zhu, Kejie Chen, Haishan Chai, Yuanbin Ye, Wenjian Liu   +4 more
semanticscholar   +1 more source

Infrastructure camera calibration with GNSS for vehicle localisation

IET Intelligent Transport Systems, 2023
Intelligent transportation and smart city applications are currently on the rise. In many applications, diverse and accurate sensor perception of vehicles is crucial.
Risto Ojala, Jari Vepsäläinen, Jesse Pirhonen, Kari Tammi   +3 more
doaj   +1 more source

Framework for Autonomous UAV Navigation and Target Detection in Global-Navigation-Satellite-System-Denied and Visually Degraded Environments

Remote Sensing
Autonomous Unmanned Aerial Vehicles (UAVs) have possible applications in wildlife monitoring, disaster monitoring, and emergency Search and Rescue (SAR).
Sebastien Boiteau, F. Vanegas, Felipe Gonzalez   +2 more
semanticscholar   +1 more source

Study on LOS to Vertical Deformation Conversion Model on Embankment Slopes Using Multi-Satellite SAR Interferometry

ISPRS International Journal of Geo-Information
Slant range geometry plays a crucial role in interpreting synthetic aperture radar (SAR) observations, especially in converting line-of-sight (LOS) surface deformations to actual vertical subsidence. This paper proposes a new conversion model to retrieve
Jie Liu, Tao Li, Sijie Ma, Qiang Shan, Weiping Jiang   +4 more
doaj   +1 more source

GNSScope and the split chip compression technique [PDF]

, 2009
The presence of multipath due to obstructions on the signal path coupled with transmitter and channel based perturbations, can significantly degrade the quality of the received satellite navigation signals, resulting in the non-detection of weaker ...
Cetin, E., Cetin, E., Kale, I., Kale, I., Kazazoglu, R., Kazazoglu, R.   +5 more
core   +1 more source

A Minimal Solution for Binocular Camera Relative Pose Estimation Based on the Gravity Prior

Remote Sensing
High-precision positioning is the foundation for the functionality of various intelligent agents. In complex environments, such as urban canyons, relative pose estimation using cameras is a crucial step in high-precision positioning. To take advantage of
Dezhong Chen, Kang Yan, Hongping Zhang, Zhenbao Yu   +3 more
doaj   +1 more source

A smart city used low-latency seamless positioning system based on inverse global navigation satellite system technology

International Journal of Distributed Sensor Networks, 2019
People have to move between indoor and outdoor frequently in city scenarios. The global navigation satellite system signal cannot provide reliable indoor positioning services.
Deyue Zou, Shutong Niu, Shuhao Chen, Binhong Su, Xinyi Cheng, Jie Liu, Yunfeng Liu, Yang Li   +7 more
doaj   +1 more source