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Related Concept Videos

Design Example01:23

Design Example

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The innovation of touch-tone telephony revolutionized the telecommunications industry by replacing the traditional rotary dial with a dual-tone multi-frequency (DTMF) signaling system. This system uses a matrix-style keypad with buttons arranged in four rows and three columns, creating 12 distinct signals each assigned to a pair of frequencies. Each button press results in a simultaneous generation of two sinusoidal tones – one from a low-frequency group (697 to 941 Hz) and one from a...
642
Introduction to Global Positioning System01:30

Introduction to Global Positioning System

737
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,...
737
Errors in Global Positioning System01:26

Errors in Global Positioning System

410
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,...
410
Field Application of Global Positioning System01:28

Field Application of Global Positioning System

373
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...
373
Types of Global Positioning System Surveys01:30

Types of Global Positioning System Surveys

436
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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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

473
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: Apr 2, 2026

Automated Deployment of an Internet Protocol Telephony Service on Unmanned Aerial Vehicles Using Network Functions Virtualization
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A WEB-based telePACS using an asymmetric satellite system.

S C Hwang1, M H Lee

  • 1Department of Broadcasting and Communication, Induk Institute of Technology, Wolgae Nowon, Seoul, Korea.

IEEE Transactions on Information Technology in Biomedicine : a Publication of the IEEE Engineering in Medicine and Biology Society
|October 12, 2000
PubMed
Summary
This summary is machine-generated.

A new Web-based TelePACS system was developed, enabling internet access to medical images and information via standard web browsers. This cost-effective solution expands Picture Archiving and Communication System (PACS) use beyond hospitals.

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Area of Science:

  • Medical Imaging Informatics
  • Telemedicine
  • Web Technology Applications

Background:

  • Traditional Picture Archiving and Communication Systems (PACS) are often limited to intra-hospital use.
  • Accessing medical images and data remotely can be complex and require specialized software.
  • There is a need for cost-effective and accessible solutions for medical image sharing.

Purpose of the Study:

  • To develop a World Wide Web (WWW)-based TelePACS system for accessing permitted PACS servers over the internet.
  • To create a system that utilizes standard web browsers for medical information retrieval.
  • To enhance the accessibility and scope of PACS beyond traditional hospital settings.

Main Methods:

  • Implementation of a WWW-based TelePACS system using Java programming.
  • Development of a consolidator to link conventional PACS servers with the Web-based TelePACS server.
  • Integration of the Asymmetric Satellite Data Communication System (ASDCS) for fast data transfer, utilizing a receive-only satellite link and terrestrial network.

Main Results:

  • Successful development of a TelePACS system accessible via standard web browsers (e.g., Netscape) without specialized tools.
  • The consolidator effectively managed the connection between conventional and Web-based PACS.
  • The ASDCS provided a fast communication channel for data delivery.

Conclusions:

  • A cost-effective and fast PACS was developed utilizing web technology.
  • Web technology has successfully expanded the application scope of dedicated PACS from intra-hospital to public use.
  • The developed system offers a flexible and accessible approach to medical image and data management.