Results 21 to 30 of about 17,467 (267)

Semi-analytical assessment of the relative accuracy of the GNSS/INS in railway track irregularity measurements

open access: yesSatellite Navigation, 2021
An aided Inertial Navigation System (INS) is increasingly exploited in precise engineering surveying, such as railway track irregularity measurement, where a high relative measurement accuracy rather than absolute accuracy is emphasized.
Qijin Chen   +3 more
doaj   +1 more source

Multi-GNSS clock combination with consideration of inconsistent nonlinear variation and satellite-specific bias

open access: yesEarth, Planets and Space, 2022
As part of the International GNSS Service (IGS) multi-GNSS Pilot Project (MGEX), precise orbit and clock products for multi-GNSS constellations have been submitted by several analysis centers (ACs) since 2012.
Guo Chen   +5 more
doaj   +1 more source

An Improved Adaptive Kalman Filter for a Single Frequency GNSS/MEMS-IMU/Odometer Integrated Navigation Module

open access: yesRemote Sensing, 2021
Aiming at the GNSS receiver vulnerability in challenging urban environments and low power consumption of integrated navigation systems, an improved robust adaptive Kalman filter (IRAKF) algorithm with real-time performance and low computation complexity ...
Peihui Yan   +7 more
doaj   +1 more source

A Comparison of a GNSS‐GIM and the IRI‐2020 Model Over China Under Different Ionospheric Conditions

open access: yesSpace Weather, 2023
The ionosphere is a crucial factor affecting Global Navigation Satellite System positioning. The Global Ionosphere Map (GIM) or the International Reference Ionosphere (IRI) model can be used for regional ionospheric correction.
Rong He, Min Li, Qiang Zhang, Qile Zhao
doaj   +1 more source

GNSS remote sensing [PDF]

open access: yesEURASIP Journal on Advances in Signal Processing, 2014
This special issue publishes several innovative ideas, methods, and applications in GNSS remote sensing, especially in GNSS-R. The issue comprises six research papers of both theoretical studies and practice, and one review article. The topics investigated include sea level measurement, snow depth estimation, snow water equivalent estimation, soil ...
Kegen Yu   +5 more
openaire   +1 more source

Spaceborne GNSS Reflectometry

open access: yesRemote 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. Compared with ground-based and airborne GNSS-R approaches, spaceborne GNSS-R has a number of advantages,
Kegen Yu   +7 more
openaire   +3 more sources

Analysis and Discussion on the Optimal Noise Model of Global GNSS Long-Term Coordinate Series Considering Hydrological Loading

open access: yesRemote Sensing, 2021
The displacement of Global Navigation Satellite System (GNSS) station contains the information of surface elastic deformation caused by the variation of land water reserves.
Yuefan He   +3 more
doaj   +1 more source

GNSS-ISE: Instruction Set Extension for GNSS Baseband Processing [PDF]

open access: yesSensors, 2020
This work presents the results of research toward designing an instruction set extension dedicated to Global Navigation Satellite System (GNSS) baseband processing. The paper describes the state-of-the-art techniques of GNSS receiver implementation. Their advantages and disadvantages are discussed.
Krzysztof Marcinek, Witold A. Pleskacz
openaire   +3 more sources

A Sub-Regional Extraction Method of Common Mode Components from IGS and CMONOC Stations in China

open access: yesRemote Sensing, 2019
There is always a need to extract more accurate regional common mode component (CMC) series from coordinate time series of Global Positioning System (GPS) stations, which would be of great benefit to describe the deformation features of the Earth’s
Shuguang Wu   +8 more
doaj   +1 more source

Equivariant filtering framework for inertial-integrated navigation

open access: yesSatellite Navigation, 2021
This paper proposes an Equivariant Filtering (EqF) framework for the inertial-integrated state estimation. As the kinematic system of the inertial-integrated navigation can be naturally modeled on the matrix Lie group SE 2(3), the symmetry of the Lie ...
Yarong Luo, Chi Guo, Jingnan Liu
doaj   +1 more source

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