Results 111 to 120 of about 1,106,314 (231)
Sensors, 2017 The failure to detect anomalies and maneuvering of the orbits of navigation satellite sensors will deteriorate the performance of positioning and orbit determination.
Fei Ye +3 more
doaj +1 more source
Representations of Time Coordinates in FITS
, 2014 In a series of three previous papers, formulation and specifics of the representation of World Coordinate Transformations in FITS data have been presented. This fourth paper deals with encoding time.
Allen, Steven L. +5 more
core +1 more source
TRAPPED‐S, a New Environment Model Framework for Saturn: Focus on Radiation‐Specification Model
Journal of Geophysical Research: Space Physics, Volume 130, Issue 11, November 2025.Abstract As space agencies contemplate missions to the outer planets' systems and moons, entailing prolonged observations via local orbiters or potential landers, meticulous assessment of the local environment—encompassing radiation and plasma conditions—is paramount for the design of both the platform and scientific payload.
A. Sicard +7 more
wiley +1 more source
Stability Tests for the Network of Permanent GNSS Stations of the Republic of Srpska
AGG+, 2020 The network of permanent GNSS stations of the Republic of Srpska is located in a fairly seismic area and belongs to different sides of regional faults.
Tanja Fržović +2 more
doaj +1 more source
LARRES: A New Deep Learning Based Global Ionosphere Map Prediction Model With Large Receptive Field
Space Weather, Volume 23, Issue 11, November 2025.Abstract Ionospheric delay poses significant challenges for satellite‐based communication and navigation applications. Predicting the global ionosphere variation can help to capture the vertical total electron content (VTEC) in advance, which improves the signal stability of communication and navigation, and supports these space‐related technologies ...
Yonggai Zhuang +7 more
wiley +1 more source
A GIVE Prediction Method in SBAS Based on GAT‐TCN
Space Weather, Volume 23, Issue 11, November 2025.Abstract A Grid Ionospheric Vertical Error (GIVE) prediction model based on GAT‐TCN is proposed in this paper. The model integrates the Graph Attention Network (GAT) with the Temporal Convolutional Network to enhance prediction accuracy while ensuring the integrity of the Satellite‐Based Augmentation System, thereby improving its availability.
Hao Zhang +8 more
wiley +1 more source
A New Asynchronous RTK Method to Mitigate Base Station Observation Outages
Sensors, 2019 Real-time kinematic (RTK) positioning is a satellite navigation technique that is widely used to enhance the precision of position data obtained from global navigation satellite systems (GNSS).
Yuan Du +4 more
doaj +1 more source
Variability Type Determination and High Precision Ephemeris for NSVS 7606408
, 2014 A photometric campaign analysis of the star NSVS 7606408 has been conducted in order to determine the type of variability and high accuracy ephemeris. By combining the obtained data with other datasets available, it was tried to improve the determination of the period, highlighting, however, a possible minimal change of the period over the years.
openaire +2 more sources
Remote SensingThe high-precision satellite velocities and accelerations calculated by the Global Navigation Satellite System (GNSS) are essential for tasks such as airborne gravity data processing.
Chuanfeng Song +4 more
doaj +1 more source
Accurate and Rapid Broadcast Ephemerides for Beidou-Maneuvered Satellites
Remote Sensing, 2019 The geostationary earth orbit (GEO) and inclined geosynchronous orbit (IGSO) satellites of the Beidou navigation satellite system are maneuvered frequently. The broadcast ephemeris can be interrupted for several hours after the maneuver.
Jing Qiao +3 more
doaj +1 more source