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

Interference: Path Lengths01:10

Interference: Path Lengths

2.5K
Consider two sources of sound, that may or may not be in phase, emitting waves at a single frequency, and consider the frequencies to be the same.
Two special sources may be considered when they are in phase. This can be easily achieved by feeding the two sources from the same source. An example would be synchronizing the two speakers by feeding them with the same source, such as the sound waves produced by a tuning fork. This setup ensures that the two sources have the same frequency and are...
2.5K
Inductively Coupled Plasma-Mass Spectrometry (ICP-MS): Interferences01:20

Inductively Coupled Plasma-Mass Spectrometry (ICP-MS): Interferences

1.7K
Inductively coupled plasma–mass spectrometry (ICP–MS) is a highly selective and sensitive technique for accurate elemental analysis. Though the analysis of ICP–MS mass spectra is comparatively straightforward, it is affected by spectroscopic and non-spectroscopic interferences. Spectroscopic interferences arise when the plasma contains ionic species with an m/z value the same as the analyte ion. Spectroscopic interference can be categorized as isobaric, polyatomic ions, and...
1.7K
Interference and Diffraction02:18

Interference and Diffraction

54.5K
Interference is a characteristic phenomenon exhibited by waves. When two electromagnetic waves interact with their peaks and troughs coinciding, a resulting wave with enhanced amplitude is produced. This is known as constructive interference. In this case, the two waves interacting are in phase with each other.
54.5K
IR Spectrum Peak Splitting: Symmetric vs Asymmetric Vibrations01:08

IR Spectrum Peak Splitting: Symmetric vs Asymmetric Vibrations

2.3K
Identical bonds within a polyatomic group can stretch symmetrically (in-phase) or asymmetrically (out-of-phase). Similar to hydrogen bonding, these vibrations also influence the shape of the IR peak. Generally, asymmetric stretching frequencies are higher than symmetric stretching frequencies. For example, primary amines exhibit two distinct IR peaks between 3300–3500 cm−1 corresponding to the symmetric and asymmetric N-H stretching, while secondary amines exhibit a single...
2.3K
Atomic Absorption Spectroscopy: Interference01:25

Atomic Absorption Spectroscopy: Interference

2.4K
Interference leads to systematic error in atomic absorption (AA) measurements by enhancing or diminishing the analytical signal or the background. These interferences can be grouped into three main categories: spectral interference, chemical interference, and physical interference.
Spectral interference occurs when signals from other elements or molecules overlap with the analyte signal, falsely elevating or masking the analyte's absorbance. This interference can be corrected using Zeeman,...
2.4K
Types of Global Positioning System Surveys01:30

Types of Global Positioning System Surveys

437
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...
437

You might also read

Related Articles

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

Sort by
Same author

Heterotrimeric G Protein-RasGAP Coupling Drives Adaptation During Chemotaxis.

Cells·2026
Same author

Double-helix optical point spread function enables real-time mesoscopic 3D functional microangiography in the living mouse brain and skull.

Nature communications·2026
Same author

Accelerated biological aging (GOLD BioAgeDiff) and depressive symptoms in US adults: NHANES 2005-2018.

Journal of affective disorders·2026
Same author

Inflammaging-induced TRAF3 degradation impairs AMP biosynthesis to drive sarcopenia.

Research square·2026
Same author

Needle beam two-photon microscopy for simultaneous multiplane neural and vascular imaging in awake mice.

PhotoniX·2026
Same author

<i>Robinia pseudoacacia</i> L. Flower Exosome-Like Nanoparticles (RFELNs) Activate AhR/IL-22 to Relieve Intestinal Barrier Dysfunction Through Regulating Gut Microbiota-Interrelated Tryptophan Metabolism in Ulcerative Colitis Mice.

Mediators of inflammation·2026

Related Experiment Video

Updated: Apr 4, 2026

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

3.6K

A New Reassigned Spectrogram Method in Interference Detection for GNSS Receivers.

Kewen Sun1, Tian Jin2, Dongkai Yang3

  • 1School of Computer and Information, Hefei University of Technology, Tunxi Road 193, Hefei 230009, China. kewen.sun@hfut.edu.cn.

Sensors (Basel, Switzerland)
|September 15, 2015
PubMed
Summary
This summary is machine-generated.

A novel reassigned spectrogram method enhances Global Navigation Satellite System (GNSS) interference detection by eliminating cross-terms and improving time-frequency resolution. A notch filter further boosts mitigation performance, improving GNSS receiver acquisition in jamming environments.

Keywords:
Global Navigation Satellite System (GNSS)Wigner–Ville distribution (WVD)interference detection and mitigationnotch filterreassigned methodspectrogram

More Related Videos

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

8.3K
Implementation of a Reference Interferometer for Nanodetection
16:11

Implementation of a Reference Interferometer for Nanodetection

Published on: April 26, 2014

9.9K

Related Experiment Videos

Last Updated: Apr 4, 2026

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

3.6K
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

8.3K
Implementation of a Reference Interferometer for Nanodetection
16:11

Implementation of a Reference Interferometer for Nanodetection

Published on: April 26, 2014

9.9K

Area of Science:

  • Signal Processing
  • Navigation Systems

Background:

  • Interference detection is critical for Global Navigation Satellite System (GNSS) receivers.
  • Existing time-frequency (TF) analysis techniques like spectrogram and Wigner-Ville distribution (WVD) have limitations, including TF resolution trade-offs and cross-term interference.

Purpose of the Study:

  • To propose a new TF distribution, the reassigned spectrogram, for improved interference detection in GNSS receivers.
  • To address the cross-term problem inherent in WVD and the resolution trade-offs of spectrograms.
  • To evaluate the effectiveness of a notch filter for interference mitigation in GNSS receivers.

Main Methods:

  • A reassigned spectrogram technique is introduced to combine cross-term elimination with enhanced TF aggregation.
  • A notch filter is employed for interference mitigation, with performance characterized using receiver operating characteristics (ROCs).
  • Experimental evaluation is conducted on GPS L1 signals under disturbing conditions, comparing the proposed method against existing TF analysis approaches.

Main Results:

  • The proposed reassigned spectrogram method effectively overcomes the cross-term problem while maintaining good TF localization.
  • Experimental results demonstrate the technique's validity and effectiveness in enhancing interference detection performance.
  • The notch filter significantly improves GNSS receiver acquisition performance, as evidenced by ROC curves in jamming scenarios.

Conclusions:

  • The reassigned spectrogram offers a superior approach to time-frequency analysis for GNSS interference detection.
  • The integration of the reassigned spectrogram and notch filter enhances GNSS receiver resilience and performance in the presence of interference.
  • This study validates a robust method for improving the reliability of GNSS receivers in challenging signal environments.