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Related Concept Videos

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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Field Application of Global Positioning System01:28

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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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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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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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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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Directional Relays01:25

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Directional relays, essential for managing unidirectional fault currents, enhance the safety and efficiency of power systems. On power lines equipped with directional relays, faults downstream (to the right) of the current transformer typically cause the fault current to lag the bus voltage by approximately 90 degrees, known as the forward direction. In contrast, upstream (left-side) faults may result in the fault current leading the bus voltage by nearly 90 degrees, termed the reverse...
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Relocating Sensor Nodes to Maximize Cumulative Connected Coverage in Wireless Sensor Networks.

Sensors (Basel, Switzerland)·2016
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The Survey on Near Field Communication.

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Updated: Apr 15, 2026

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NFC internal: an indoor navigation system.

Busra Ozdenizci1, Vedat Coskun2, Kerem Ok3

  • 1NFC Lab-Istanbul, Department of Information Technologies, ISIK University, Istanbul 34980, Turkey. busraozdenizci@isikun.edu.tr.

Sensors (Basel, Switzerland)
|April 1, 2015
PubMed
Summary

Near Field Communication (NFC) Internal offers a novel indoor navigation solution. This NFC-based system provides secure, cost-effective, and user-friendly navigation, overcoming limitations of existing indoor positioning technologies.

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Area of Science:

  • Computer Science
  • Electrical Engineering
  • Human-Computer Interaction

Background:

  • Global Positioning System (GPS) is unavailable indoors, creating a need for indoor navigation systems.
  • Existing indoor navigation solutions present technical and usability challenges.

Purpose of the Study:

  • To introduce NFC Internal, a Near Field Communication (NFC)-based indoor navigation system.
  • To address limitations of current indoor navigation technologies through an NFC-centric approach.

Main Methods:

  • System requirements and design details for NFC Internal are presented.
  • A prototype application and case study were developed to assess viability.
  • Performance evaluation and comparison with existing indoor navigation systems were conducted.

Main Results:

  • NFC Internal demonstrates significant advantages over current systems.
  • Key improvements are noted in security, privacy, cost, performance, robustness, and usability.
  • The system shows strong commercial availability potential.

Conclusions:

  • NFC Internal offers a robust and practical solution for indoor navigation.
  • The system provides substantial contributions to the field of indoor positioning.
  • User preference and commercial viability are key strengths of NFC Internal.