Results 21 to 30 of about 20,060,135 (189)

The Unified Form of Code Biases and Positioning Performance Analysis in Global Positioning System (GPS)/BeiDou Navigation Satellite System (BDS) Precise Point Positioning Using Real Triple-Frequency Data

open access: yesSensors, 2019
Multi- system and multi-frequency are two key factors that determine the performance of precise point positioning. Both multi-frequency and multi-system lead to new biases, which are not solved systematically.
Peng Liu, Honglei Qin, Li Cong
doaj   +1 more source

Modeling and Analysis of BDS-2 and BDS-3 Combined Precise Time and Frequency Transfer Considering Stochastic Models of Inter-System Bias [PDF]

open access: yesRemote Sensing, 2021
BeiDou global navigation satellite system (BDS) began to provide positioning, navigation, and timing (PNT) services to global users officially on 31 July, 2020. BDS constellations consist of regional (BDS-2) and global navigation satellites (BDS-3). Due to the difference of modulations and characteristics for the BDS-2 and BDS-3 default civil service ...
Guoqiang Jiao   +6 more
openaire   +2 more sources

Inter-American Development Bank Annual Report 2021: Financial Statements

open access: yes, 2022
This report is the second of two volumes which together constitute the Inter-American Development Bank\u27s 2021 Annual Report. This report contains the management\u27s discussion and analysis of the Bank\u27s ordinary capital and financial ...
Inter-American Development Bank
core   +1 more source

Environmental and Molecular Modulation of Motor Individuality in Larval Zebrafish

open access: yesFrontiers in Behavioral Neuroscience, 2021
Innate behavioral biases such as human handedness are a ubiquitous form of inter-individual variation that are not strictly hardwired into the genome and are influenced by diverse internal and external cues.
John Hageter   +11 more
doaj   +1 more source

A New 32-Day Average-Difference Method for Calculating Inter-Sensor Calibration Radiometric Biases between SNPP and NOAA-20 Instruments within ICVS Framework

open access: yesRemote Sensing, 2021
Two existing double-difference (DD) methods, using either a 3rdSensor or Radiative Transfer Modeling (RTM) as a transfer, are applicable primarily for limited regions and channels, and, thus critical in capturing inter-sensor calibration radiometric bias
Banghua Yan   +11 more
doaj   +1 more source

GPS/GLONASS Combined Precise Point Positioning with Receiver Clock Modeling

open access: yesSensors, 2015
Research has demonstrated that receiver clock modeling can reduce the correlation coefficients among the parameters of receiver clock bias, station height and zenith tropospheric delay.
Fuhong Wang, Xinghan Chen, Fei Guo
doaj   +1 more source

High-Accuracy Real-Time Kinematic Positioning with Multiple Rover Receivers Sharing Common Clock

open access: yesRemote Sensing, 2021
Since the traditional real-time kinematic positioning method is limited by the reduced satellite visibility from the deprived navigational environments, we, therefore, propose an improved RTK method with multiple rover receivers sharing a common clock ...
Lin Zhao   +4 more
doaj   +1 more source

Incorporating Inter-System Bias in Single Point Positioning Based on GPS, Galileo and BeiDou System

open access: yesGeomatics and Environmental Engineering, 2021
The increasing number of satellites provides new opportunities. In the experiment presented in this paper, the Single Point Positioning technique is tested. Data from four different receivers were used in the tests. The GPS, Galileo and BeiDou System observations were collected over a three day long observational session.
Dawid Łukasz Kwaśniak   +1 more
openaire   +2 more sources

Heightened clinical utility of smartphone versus body-worn inertial system for shoulder function B-B score. [PDF]

open access: yesPLoS ONE, 2017
BACKGROUND:The B-B Score is a straightforward kinematic shoulder function score including only two movements (hand to the Back + lift hand as to change a Bulb) that demonstrated sound measurement properties for patients for various shoulder pathologies ...
Claude Pichonnaz   +8 more
doaj   +1 more source

Criterion Validity of Catapult ClearSky T6 Local Positioning System for Measuring Inter-Unit Distance

open access: yesSensors, 2020
The validity of a local positioning system (LPS) to measure inter-unit distance was investigated during a team sport movement circuit. Eight recreationally active, female indoor team-sport players completed a circuit, comprising seven types of movements (
Ryan W. Hodder   +2 more
doaj   +1 more source

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