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

Precipitation Gravimetry01:03

Precipitation Gravimetry

12.9K
Precipitation gravimetry is based on converting an analyte into a sparingly soluble precipitate, which is separated by filtration and weighed. An ideal precipitate should be pure, insoluble, of known composition, and easily filtered from the reaction mixture.
In determining nickel by gravimetric analysis, a precipitant of ethanolic dimethylglyoxime is added to a hot nickel salt solution. This is quickly followed by the dropwise addition of dilute ammonia solution until precipitation occurs. A...
12.9K
Errors in Global Positioning System01:26

Errors in Global Positioning System

295
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,...
295
Methods of Obtaining Topography01:25

Methods of Obtaining Topography

254
Topography involves measuring and mapping land elevations, natural features, and artificial structures to create accurate representations of the terrain. Topographic surveying relies on traditional and modern methods, each with distinct advantages and limitations.Traditional Surveying Methods:Transit stadia surveys and plane table surveys were widely used traditional surveying methods. These techniques relied on instruments like theodolites and stadia rods for measuring distances and angles,...
254
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

350
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...
350
Influence of Earth's Curvature and Atmospheric Refraction on Leveling01:26

Influence of Earth's Curvature and Atmospheric Refraction on Leveling

806
During leveling, the Earth's curvature and atmospheric refraction introduce deviations in the line of sight from a true horizontal reference. When the line of sight is leveled, it remains perpendicular to the plumb line only at a single point. Beyond this, it deviates due to the Earth’s curvature, represented by the correction C. For a sight distance D, the deviation can be derived using the relationship:This relationship shows that the deviation increases quadratically with distance. Over a...
806
Types of Global Positioning System Surveys01:30

Types of Global Positioning System Surveys

298
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...
298

You might also read

Related Articles

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

Sort by
Same author

Performance Evaluation of Real-Time Precise Point Positioning with Both BDS-3 and BDS-2 Observations.

Sensors (Basel, Switzerland)·2020
Same author

Pro-515 of the dynamin-like GTPase MxB contributes to HIV-1 inhibition by regulating MxB oligomerization and binding to HIV-1 capsid.

The Journal of biological chemistry·2020
Same author

Efficient solar hydrogen production coupled with organics degradation by a hybrid tandem photocatalytic fuel cell using a silicon-doped TiO<sub>2</sub> nanorod array with enhanced electronic properties.

Journal of hazardous materials·2020
Same author

Ribitol enhances matriglycan of α-dystroglycan in breast cancer cells without affecting cell growth.

Scientific reports·2020
Same author

RUNX3 Inhibits the Invasion and Metastasis of Human Colon Cancer HT-29 Cells by Upregulating MMP-2/9.

Evidence-based complementary and alternative medicine : eCAM·2020
Same author

Observation of changes in the number of myocardial capillaries in rabbits after treatment of acute myocardial infarction by Tongxinluo superfine powder.

Journal of traditional Chinese medicine = Chung i tsa chih ying wen pan·2020

Related Experiment Video

Updated: Jan 5, 2026

Investigating the Relationship between Sea Surface Chlorophyll and Major Features of the South China Sea with Satellite Information
10:28

Investigating the Relationship between Sea Surface Chlorophyll and Major Features of the South China Sea with Satellite Information

Published on: June 13, 2020

6.3K

Sea Surface Height Estimation with Multi-GNSS and Wavelet De-noising.

Fade Chen1, Lilong Liu2,3, Fei Guo4

  • 1School of Geodesy and Geomatics, Wuhan University, Wuhan, 430079, China.

Scientific Reports
|October 25, 2019
PubMed
Summary
This summary is machine-generated.

This study introduces a new method for estimating sea surface height (SSH) using Global Navigation Satellite System reflectometry (GNSS-R). Wavelet de-noising significantly improves SSH estimation accuracy, reducing errors by over 40%.

More Related Videos

Measurements of Waves in a Wind-wave Tank Under Steady and Time-varying Wind Forcing
08:54

Measurements of Waves in a Wind-wave Tank Under Steady and Time-varying Wind Forcing

Published on: February 13, 2018

9.0K
Development of New Methods for Quantifying Fish Density Using Underwater Stereo-video Tools
09:32

Development of New Methods for Quantifying Fish Density Using Underwater Stereo-video Tools

Published on: November 20, 2017

9.7K

Related Experiment Videos

Last Updated: Jan 5, 2026

Investigating the Relationship between Sea Surface Chlorophyll and Major Features of the South China Sea with Satellite Information
10:28

Investigating the Relationship between Sea Surface Chlorophyll and Major Features of the South China Sea with Satellite Information

Published on: June 13, 2020

6.3K
Measurements of Waves in a Wind-wave Tank Under Steady and Time-varying Wind Forcing
08:54

Measurements of Waves in a Wind-wave Tank Under Steady and Time-varying Wind Forcing

Published on: February 13, 2018

9.0K
Development of New Methods for Quantifying Fish Density Using Underwater Stereo-video Tools
09:32

Development of New Methods for Quantifying Fish Density Using Underwater Stereo-video Tools

Published on: November 20, 2017

9.7K

Area of Science:

  • Geodesy and Remote Sensing
  • Oceanography

Background:

  • Sea surface height (SSH) is crucial for understanding ocean dynamics.
  • Traditional methods for SSH estimation can be costly and lack high resolution.
  • Global Navigation Satellite System reflectometry (GNSS-R) offers a cost-effective alternative with high temporal and spatial resolution.

Purpose of the Study:

  • To develop and validate a novel SSH estimation technique using GNSS-R.
  • To enhance the accuracy of SSH estimates through advanced signal processing.
  • To assess the performance of the proposed method against tide gauge measurements.

Main Methods:

  • Utilized multi-constellation GNSS (BDS, GPS, GLONASS) signal-to-noise ratio (SNR) data from the MAYG station.
  • Performed initial SSH estimation and subsequently applied wavelet de-noising for tidal waveform reconstruction.
  • Validated results by comparing GNSS-R derived SSH with tide gauge data.

Main Results:

  • Initial GNSS-R SSH estimation achieved a root mean square error (RMSE) of 32 cm and a correlation coefficient of 0.83.
  • Wavelet de-noising improved SSH estimation, yielding a correlation coefficient of 0.95 and an RMSE of 19 cm.
  • The de-noising technique enhanced correlation by 14.5% and reduced RMSE by 40.6% compared to initial estimates.

Conclusions:

  • GNSS-R is a viable and cost-effective technique for SSH estimation.
  • Wavelet de-noising significantly improves the accuracy and reliability of GNSS-R based SSH measurements.
  • The enhanced method shows great potential for ocean monitoring and research.