Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Energy of a Satellite in a Circular Orbit

Energy of a Satellite in a Circular Orbit

Thousands of artificial satellites orbit the Earth every day at various distances from the Earth. Satellites that orbit the Earth below an altitude of 1,600 km are considered to be orbiting in low-Earth orbit (LEO). Research satellites and Earth observation satellites are usually placed in LEO, and mostly orbit the Earth in elliptical orbits. Navigation satellites are placed in medium-Earth orbit (MEO), ranging from 2,000 km to 36,000 km from the surface of the Earth. Meanwhile, communication...

Circular Orbits and Critical Velocity for Satellites

Circular Orbits and Critical Velocity for Satellites

The Moon orbits around the Earth. In turn, the Earth (and other planets) orbit the Sun. The space directly above our atmosphere is filled with artificial satellites in orbit. One can examine the circular orbit, the simplest kind of orbit, to understand the relationship between the speed and the period of planets and satellites with respect to their positions and the bodies that they orbit.
Nicolaus Copernicus (1473-1543) first suggested that the Earth and all other planets orbit the Sun in...

NMR Spectrometers: Resolution and Error Correction

NMR Spectrometers: Resolution and Error Correction

When magnetic nuclei in a sample achieve resonance and undergo relaxation, the signal detected in NMR is an approximately exponential free induction decay. Fourier transform of an exponential decay yields a Lorentzian peak in the frequency domain. Lorentzian peaks in an NMR spectrum are defined by their amplitude, full width at half maximum, and position, where the peak width is governed by the spin-spin relaxation time alone. In real experiments, however, the applied magnetic field is rendered...

Uncertainty in Measurement: Accuracy and Precision

Uncertainty in Measurement: Accuracy and Precision

Scientists typically make repeated measurements of a quantity to ensure the quality of their findings and to evaluate both the precision and the accuracy of their results. Measurements are said to be precise if they yield very similar results when repeated in the same manner. A measurement is considered accurate if it yields a result that is very close to the true or the accepted value. Precise values agree with each other; accurate values agree with a true value.

Atomic Orbitals

Atomic Orbitals

An atomic orbital represents the three-dimensional regions in an atom where an electron has the highest probability to reside. The radial distribution function indicates the total probability of finding an electron within the thin shell at a distance r from the nucleus. The atomic orbitals have distinct shapes which are determined by l, the angular momentum quantum number. The orbitals are often drawn with a boundary surface, enclosing densest regions of the cloud.

Molecular Orbital Theory I

Molecular Orbital Theory I

Overview of Molecular Orbital Theory

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

4-Octyl itaconate attenuates renal calculi formation by inhibiting ferroptosis and oxidative stress via the Nrf2-HO-1/SLC7A11 axis.

European journal of pharmacology·2026

Same author

Mechanical activation of Piezo1 promotes osteoclastogenesis in orthodontic tooth movement.

BMC oral health·2026

Same author

High-Precision Laser Time-Frequency Synchronization in Space Based on an Improved Kalman Filtering Method.

Sensors (Basel, Switzerland)·2026

Same author

Nerve Growth Factor: A Multifaceted Regulator of Pain, Inflammation, and Tissue Remodeling in Bone and Joint Disorders.

Cell biochemistry and function·2026

Same author

A Method for Enhancing the Positioning Performance of PPP-B2b by Integrating Galileo Observation.

Sensors (Basel, Switzerland)·2026

Same author

OptoRibo-seq for spatiotemporally resolved mapping of the local protein translatome.

Proceedings of the National Academy of Sciences of the United States of America·2026

Search research articles

Related Experiment Video

Updated: Jan 23, 2026

Application of Deep Learning-Based Medical Image Segmentation via Orbital Computed Tomography

Application of Deep Learning-Based Medical Image Segmentation via Orbital Computed Tomography

Published on: November 30, 2022

Corrections of BDS Code Multipath Error in Geostationary Orbit Satellite and Their Application in Precise Data

Weiwei Song¹, Qiong Wu², Xiaopeng Gong³

¹GNSS Research Center, Wuhan University, Luoyu Road 129, Wuhan 430079, China. SWW@whu.edu.cn.

Sensors (Basel, Switzerland)

|June 21, 2019

Summary

Multipath errors in BeiDou Navigation Satellite System (BDS) geostationary orbit (GEO) satellites were analyzed and corrected using wavelet transform. This method significantly reduced errors in code observables, improving ionospheric delay estimation and satellite clock convergence.

Keywords:

geostationary orbit satellite ionospheric delay multipath error satellite clock estimation wavelet transform

More Related Videos

Rare Event Detection Using Error-corrected DNA and RNA Sequencing

Rare Event Detection Using Error-corrected DNA and RNA Sequencing

Published on: August 3, 2018

Data Communication Based on MQTT in a Polymer Extrusion Process

Data Communication Based on MQTT in a Polymer Extrusion Process

Published on: July 15, 2022

Related Experiment Videos

Last Updated: Jan 23, 2026

Application of Deep Learning-Based Medical Image Segmentation via Orbital Computed Tomography

Application of Deep Learning-Based Medical Image Segmentation via Orbital Computed Tomography

Published on: November 30, 2022

Rare Event Detection Using Error-corrected DNA and RNA Sequencing

Rare Event Detection Using Error-corrected DNA and RNA Sequencing

Published on: August 3, 2018

Data Communication Based on MQTT in a Polymer Extrusion Process

Data Communication Based on MQTT in a Polymer Extrusion Process

Published on: July 15, 2022

Area of Science:

Geodesy and Geomatics Engineering
Satellite Navigation Systems
Signal Processing

Background:

Multipath error is a significant challenge in Global Navigation Satellite System (GNSS) data processing, particularly for BeiDou Navigation Satellite System (BDS) geostationary orbit (GEO) satellites.
The complexity of multipath effects on code observables, especially for BDS GEO satellites, necessitates advanced correction techniques.

Purpose of the Study:

To analyze the characteristics and impact of multipath errors on precise data processing for BDS GEO satellites.
To develop and validate a novel method for mitigating multipath errors in BDS GEO code observables.

Main Methods:

Utilized a large dataset from 83 globally distributed GNSS stations, including multi-GNSS experiments and BDS augmentation systems.
Employed a linear combination of code and carrier-phase observables to investigate BDS GEO multipath repeatability.
Applied wavelet transform to identify and correct systematic multipath variations in GEO code observables.

Main Results:

Wavelet transform effectively isolated the systematic multipath component in BDS GEO code observables.
Demonstrated significant reductions in the root mean square error (RMSE) of multipath series: 19.5% for B1, 20.2% for B2, and 7.5% for B3.
Achieved an average RMSE reduction of 15.5% for slant ionospheric delay estimation and improved satellite clock estimation convergence time.

Conclusions:

The proposed wavelet transform-based correction method effectively mitigates multipath errors in BDS GEO code observables.
The correction technique enhances the accuracy of ionospheric delay estimation and accelerates satellite clock convergence.
This research offers a valuable contribution to improving the precision and reliability of GNSS data processing, particularly for BDS GEO applications.