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Related Concept Videos

Field Application of Global Positioning System01:28

Field Application of Global Positioning System

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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...
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Types of Global Positioning System Surveys01:30

Types of Global Positioning System Surveys

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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...
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Signal and System01:26

Signal and System

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A signal x(t) is a set of data or a time function representing a variable of interest. Signals typically convey information about a phenomenon, such as atmospheric temperature, humidity, human voice, television images, a dog's bark, or birdsongs. More generally, a signal can be a function of more than one independent variable. For instance, images depend on horizontal and vertical positions and can be regarded as two-dimensional signals. However, this text will focus on one-dimensional...
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Introduction to Global Positioning System01:30

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The Global Positioning System (GPS) revolutionized positioning on Earth, providing precise location data through satellite ranging. The GPS system was developed in 1978 by the U.S. Department of Defense  for military use, and it became available for civilian applications in 1983, transforming fields including navigation, fleet management, and time synchronization for telecommunications systems.GPS consists of satellites in medium Earth orbit, about 20,200 kilometers above the surface,...
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Errors in Global Positioning System01:26

Errors in Global Positioning System

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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,...
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Standing Electromagnetic Waves01:15

Standing Electromagnetic Waves

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Electromagnetic waves can be reflected; the surface of a conductor or a dielectric can act as a reflector. As electric and magnetic fields obey the superposition principle, so do electromagnetic waves. The superposition of an incident wave and a reflected electromagnetic wave produces a standing wave analogous to the standing waves created on a stretched string.
Suppose a sheet of a perfect conductor is placed in the yz-plane, and a linearly polarized electromagnetic wave traveling in the...
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Related Experiment Video

Updated: Oct 2, 2025

Automated Deployment of an Internet Protocol Telephony Service on Unmanned Aerial Vehicles Using Network Functions Virtualization
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A Software Defined Radio Based Anti-UAV Mobile System with Jamming and Spoofing Capabilities.

Renato Ferreira1,2, João Gaspar1,2, Pedro Sebastião1,2

  • 1Department of Information Science and Technology, ISCTE-Instituto Universitário de Lisboa, 1649-026 Lisboa, Portugal.

Sensors (Basel, Switzerland)
|February 26, 2022
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Summary

This study presents a portable system using software defined radio (SDR) to counter unauthorized drones. The system effectively disrupts drone navigation signals, enabling control or diversion of the aircraft.

Keywords:
GPS spoofingjammingradionavigationsoftware defined radiounmanned aerial vehicles

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Area of Science:

  • Aerospace Engineering
  • Cybersecurity
  • Radio Frequency Engineering

Background:

  • Increasing incidents of unmanned aerial vehicle (UAV) and aircraft collisions at airports.
  • Need for effective and accessible anti-drone solutions.

Purpose of the Study:

  • To develop a portable, low-cost system to protect airspace against unauthorized UAVs.
  • To demonstrate the system's capability for target localization, jamming, and GPS spoofing.

Main Methods:

  • Utilizing low-cost Software Defined Radio (SDR) platforms.
  • Implementing target localization algorithms.
  • Integrating jamming and Global Positioning System (GPS) spoofing techniques.

Main Results:

  • Successful disruption of reliable radionavigation signal reception in UAVs.
  • Demonstrated ability to divert or take control of unauthorized UAVs.
  • Prototype effectiveness validated through real-life tests.

Conclusions:

  • The developed portable SDR-based system is effective against unauthorized UAVs.
  • The system offers a viable solution for airspace protection by manipulating GPS-dependent flight paths.