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Related Concept Videos

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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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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Introduction to Global Positioning System01:30

Introduction to Global Positioning System

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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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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

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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...
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Related Experiment Video

Updated: Jul 1, 2025

Tracking Infiltration Front Depth Using Time-lapse Multi-offset Gathers Collected with Array Antenna Ground Penetrating Radar
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Flying Target Detection Technology Based on GNSS Multipath Signals.

Pengfei Zhu1, Qinglin Zhu1, Xiang Dong1

  • 1China Research Institute of Radiowave Propagation, Qingdao 266107, China.

Sensors (Basel, Switzerland)
|March 13, 2024
PubMed
Summary
This summary is machine-generated.

This study introduces a novel passive radar system for detecting flying targets. The lightweight, low-cost system effectively tracks aircraft using Global Navigation Satellite System signals, overcoming limitations of traditional radar.

Keywords:
GNSSflying targetmultipath effectpassive radar

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Area of Science:

  • Radar Systems Engineering
  • Aerospace Engineering
  • Signal Processing

Background:

  • Traditional flying target detection systems suffer from large size, high power consumption, complexity, and poor battlefield survivability.
  • Existing systems often discard multipath signals, which can be valuable for detection and positioning.

Purpose of the Study:

  • To develop a novel passive radar system for detecting flying targets.
  • To address the limitations of conventional radar systems in terms of size, power, complexity, and survivability.
  • To leverage multipath signals and Global Navigation Satellite System (GNSS) signals for enhanced target detection.

Main Methods:

  • Development of a passive radar system utilizing multipath signals from GNSS.
  • Enhancement of target detection by integrating supporting information and multi-source GNSS signal characteristics.
  • Validation through an experiment to assess the system's capability in locating aircraft and obtaining flight trajectories.

Main Results:

  • The developed passive radar system successfully located a passenger airplane and determined its flight trajectory.
  • The system achieved this using only a single GNSS receiving antenna.
  • The system demonstrated a lightweight design (<5 kg), low power consumption, simplicity, and portability.

Conclusions:

  • The passive radar system offers a cost-effective, portable, and robust solution for 24/7 all-weather flying target detection.
  • Its characteristics make it suitable for large-scale deployment, indicating significant development potential.
  • This technology presents a viable alternative to traditional radar systems, especially in resource-constrained or sensitive environments.