Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Errors in Global Positioning System01:26

Errors in Global Positioning System

23
Global Positioning System (GPS) technology has revolutionized navigation and positioning, but its accuracy is often compromised by various errors. These errors, stemming from environmental, satellite, and receiver-related factors, require careful mitigation to ensure reliable performance across applications.Atmospheric ErrorsGPS signals travel through the Earth’s ionosphere and troposphere, introducing delays which affect accuracy. The ionosphere is strongly influenced by charged particles,...
23
Types of Global Positioning System Surveys01:30

Types of Global Positioning System Surveys

42
GPS surveying methods vary in application, accuracy, and data collection techniques, catering to diverse surveying and mapping needs. Static GPS, kinematic GPS, and real-time kinematic (RTK) surveying are widely used. Each technique offers distinct advantages.Static GPS involves placing one receiver at a known reference point and another at the target point. It collects exact positional data by observing multiple satellite ranges over an extended period, achieving centimeter-level accuracy for...
42
Design Example: Identifying the Locations of Monuments in the Field Using Global Positioning System Device01:30

Design Example: Identifying the Locations of Monuments in the Field Using Global Positioning System Device

16
Surveyors use Global Positioning System (GPS) technology to measure the precise location and elevation of points on Earth. In a recent survey, GPS receivers were used to determine the coordinates and elevations of two park monuments. The process involved careful mission planning, data collection, and correction to ensure accuracy. The survey began with mission planning to identify optimal satellite visibility and minimize Position Dilution of Precision (PDOP). A geodetic control point...
16
Field Application of Global Positioning System01:28

Field Application of Global Positioning System

19
The Global Positioning System (GPS) has become an indispensable tool in fieldwork, offering unparalleled precision and efficiency for surveying, navigation, and infrastructure development. By harnessing signals from a constellation of satellites, GPS receivers determine the location of objects with remarkable speed and accuracy, often completing calculations within a second.Advantages of Modern GPS TechnologyContemporary GPS receivers are designed to meet the practical demands of field...
19
Insensitive Nuclei Enhanced by Polarization Transfer (INEPT)01:15

Insensitive Nuclei Enhanced by Polarization Transfer (INEPT)

180
Insensitive Nuclei Enhanced by Polarization Transfer (INEPT) is an advanced Nuclear Magnetic Resonance (NMR) technique specifically designed to detect and enhance the signals of low-abundance nuclei, such as carbon-13 and nitrogen-15, in small molecules. The fundamental principle behind INEPT is the transfer of polarization from a more abundant and highly polarizable nucleus, typically hydrogen-1, to the low-abundance nucleus of interest. This process effectively boosts the NMR signal of the...
180
Double Resonance Techniques: Overview01:12

Double Resonance Techniques: Overview

154
Double resonance techniques in Nuclear Magnetic Resonance (NMR) spectroscopy involve the simultaneous application of two different frequencies or radiofrequency pulses to manipulate and observe two distinct nuclear spins. One important application of double resonance is spin decoupling, which selectively suppresses coupling with one type of nucleus while observing the NMR signal from another nucleus, simplifying the spectrum and enhancing resolution.
Spin decoupling is usually achieved by...
154

You might also read

Related Articles

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

Sort by
Same author

Establishment of <sup>68</sup>Ga-DOTA-Based Pretargeted Radioimmunodiagnosis.

Molecular pharmaceutics·2026
Same author

Preclinical <sup>203/212</sup>Pb-DOTA-Based Pretargeted Radioimmunotherapy in Nude Mice Bearing Established Human Colorectal Cancer Xenografts.

Journal of nuclear medicine : official publication, Society of Nuclear Medicine·2026
Same author

Dynamic evolution of rocky desertification and vegetation restoration and analysis of driving forces in Southwest Karst Region from 2000 to 2020.

PloS one·2025
Same author

Rizedisben in Minimally Invasive Surgery: A Nonrandomized Clinical Trial.

JAMA surgery·2025
Same author

GPA33-pretargeted radioimmunotherapy with mono- and bivalent DOTA-based Lu-177-labeled radiohaptens in a mouse orthotopic liver xenograft model of metastatic human colorectal cancer.

Theranostics·2025
Same author

Theranostic GPA33-Pretargeted Radioimmunotherapy of Human Colorectal Carcinoma with a Bivalent <sup>177</sup>Lu-Labeled Radiohapten.

Journal of nuclear medicine : official publication, Society of Nuclear Medicine·2024

Related Experiment Video

Updated: May 14, 2025

Tracking Infiltration Front Depth Using Time-lapse Multi-offset Gathers Collected with Array Antenna Ground Penetrating Radar
07:14

Tracking Infiltration Front Depth Using Time-lapse Multi-offset Gathers Collected with Array Antenna Ground Penetrating Radar

Published on: May 1, 2018

7.7K

Multi-GNSS Large Areas PPP-RTK Performance During Ionosphere Anomaly Periods.

Zhu Wang1,2, Guangbin Yang1, Rui Huang3

  • 1School of Geography & Environmental Science, Guizhou Normal University, Guiyang 550001, China.

Sensors (Basel, Switzerland)
|April 12, 2025
PubMed
Summary

Ionospheric anomalies significantly degrade Global Navigation Satellite Systems (GNSS) Precise Point Positioning with real-time kinematic (PPP-RTK) services, increasing convergence times and reducing positioning accuracy. Performance improves with more satellite systems, despite ionospheric disruptions.

Keywords:
PPP-RTKambiguity resolutionionospheric scintillationservice performance

More Related Videos

In Situ Soil Moisture Sensors in Undisturbed Soils
08:20

In Situ Soil Moisture Sensors in Undisturbed Soils

Published on: November 18, 2022

5.9K
Continuous-Wave Propagation Channel-Sounding Measurement System - Testing, Verification, and Measurements
09:36

Continuous-Wave Propagation Channel-Sounding Measurement System - Testing, Verification, and Measurements

Published on: June 25, 2021

2.9K

Related Experiment Videos

Last Updated: May 14, 2025

Tracking Infiltration Front Depth Using Time-lapse Multi-offset Gathers Collected with Array Antenna Ground Penetrating Radar
07:14

Tracking Infiltration Front Depth Using Time-lapse Multi-offset Gathers Collected with Array Antenna Ground Penetrating Radar

Published on: May 1, 2018

7.7K
In Situ Soil Moisture Sensors in Undisturbed Soils
08:20

In Situ Soil Moisture Sensors in Undisturbed Soils

Published on: November 18, 2022

5.9K
Continuous-Wave Propagation Channel-Sounding Measurement System - Testing, Verification, and Measurements
09:36

Continuous-Wave Propagation Channel-Sounding Measurement System - Testing, Verification, and Measurements

Published on: June 25, 2021

2.9K

Area of Science:

  • Geodesy and Geomatics
  • Space Weather and Ionospheric Physics
  • Satellite Navigation Systems

Background:

  • Precise Point Positioning with real-time kinematic (PPP-RTK) is crucial for high-accuracy GNSS applications.
  • Existing research often overlooks PPP-RTK performance during ionospheric anomalies, such as those during thunderstorms.
  • Ionospheric disturbances significantly impact GNSS signal propagation and positioning accuracy.

Purpose of the Study:

  • To analyze the performance degradation of PPP-RTK under ionospheric active conditions.
  • To quantify the impact of ionospheric anomalies on uncalibrated phase delay (UPD) residuals, atmospheric modeling, and positioning accuracy.
  • To evaluate the effect of increased satellite constellations (GPS, Galileo, BDS) on PPP-RTK resilience during ionospheric disturbances.

Main Methods:

  • Analysis of 13-day GNSS data from 305 Australian stations, including ionospheric anomaly and calm periods.
  • Evaluation of wide-lane and narrow-lane UPD residuals and atmospheric delay estimation accuracy.
  • Assessment of PPP-RTK positioning accuracy and convergence times for GPS-only, GPS + Galileo, and GPS + Galileo + BDS solutions.

Main Results:

  • Ionospheric anomalies decreased UPD accuracy by up to 2.4% and degraded ionospheric/tropospheric delay estimates by 167.1% and 17.3%, respectively.
  • PPP-RTK convergence times increased significantly (25.0%-87.2%) and positioning accuracy declined (5.5%-18.5%) during anomalies, varying with satellite constellation.
  • Increased satellite systems improved positioning performance, but degradation due to ionospheric activity remained substantial.

Conclusions:

  • Ionospheric anomalies severely disrupt PPP-RTK services by degrading ionospheric delay estimates, impacting positioning results.
  • While ionospheric disturbances degrade performance, utilizing more satellite systems enhances PPP-RTK resilience.
  • This study provides critical insights into PPP-RTK behavior during adverse ionospheric conditions, highlighting the need for robust algorithms.