Results 21 to 30 of about 146,803 (321)

Tutorial on GNSS Polarimetric Radio Occultations (GNSS PRO)

open access: green, 2020
Talk delivered in 1st Paz Polarimetric Radio Occultations User Workshop, 23 April 2020 45 minute tutorial to explain the basics of the GNSS polarimetric radio occultation.
Estel Cardellach   +4 more
openalex   +2 more sources

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

Calibration of GRACE on-board accelerometers for thermosphere density derivation

open access: yesGeo-spatial Information Science, 2022
Low Earth Orbit satellite on-board accelerometers play an important role in improving our understanding of thermosphere density; however, the accelerometer-derived densities are subject to accelerometer calibration errors.
Min Li   +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 Testbed for Developing and Evaluating GNSS Signal Authentication Techniques [PDF]

open access: yes, 2014
An experimental testbed has been created for developing and evaluating Global Navigation Satellite System (GNSS) signal authentication techniques.
Bhatti, Jahshan A.   +3 more
core   +1 more source

A review of real-time multi-GNSS precise orbit determination based on the filter method

open access: yesSatellite Navigation, 2022
Stable and reliable high-precision satellite orbit products are the prerequisites for the positioning services with high performance. In general, the positioning accuracy depends strongly on the quality of satellite orbit and clock products, especially ...
Yidong Lou   +7 more
doaj   +1 more source

SNR degradation in GNSS-R measurements under the effects of radio-frequency interference [PDF]

open access: yes, 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 ...
Alonso Arroyo, Alberto   +5 more
core   +2 more sources

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

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

open access: yes, 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   +8 more
core   +1 more source

sUAS Swarm Navigation using Inertial, Range Radios and Partial GNSS [PDF]

open access: yes, 2019
Small Unmanned Aerial Systems (sUAS) operations are increasing in demand and complexity. Using multiple cooperative sUAS (i.e. a swarm) can be beneficial and is sometimes necessary to perform certain tasks (e.g., precision agriculture, mapping ...
Huff, Joel   +2 more
core   +1 more source

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