Global Navigation Satellite Systems

A Global Navigation Satellite System (usually referred to as "GNSS") is a constellation of satellites that emits radio-frequency signals.


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Galileo

Galileo will be Europe´s global navigation satellite system, providing a highly accurate, guaranteed global positioning service under civilian control.


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GPS

The United States Global Positioning System is a space-based global navigation satellite system that provides reliable positioning, navigation and timing services to civilian and military users on a continuous worldwide basis.


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GLONASS

GLONASS is a radio-based satellite navigation system operated for the Russian government by the Russian Space Forces.

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Beidou

The BeiDou Navigation Satellite System - also known as Beidou-2 - is a project by China to develop an independent global satellite navigation system. It is not an extension to the previously deployed Beidou-1.

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EGNOS

The European Geostationary Navigation Overlay Service is the first pan-European satellite navigation system.

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MSAS

Multi-functional Satellite Augmentation System is a Japanese Satellite Based Augmentation System.

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WAAS

The Wide Area Augmentation System is an air navigation aid developed by the Federal Aviation Administration to augment the Global Positioning System.

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IRNSS

The Indian Regional Navigational Satellite System is an autonomous regional satellite navigation system being developed by Indian Space Research Organisation (ISRO).

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QZSS

The Quasi-Zenith Satellite System is a proposed three-satellite regional time transfer system and enhancement for the Global Positioning System.

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GNSS Signal

GNSS satellites send their signals in a specific radio-frequency band. The signals are normally pseudo-random noise (PRN) spread-spectrum signals that are transmitted in micro-wave frequency bands.

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GPS Simulation

GPS simulation is part of the more general GNSS simulation. Here GPS signals are generated exclusively.

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Multi-GNSS Simulation

In a multi-GNSS simulation several GNSS constellations with the signals of their satellites are simulated for a static or kinematic user.

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GNSS Fundamentals

A Global Navigation Satellite System involves a constellation of satellites orbiting at about twenty thousand kilometers altitude over the earth surface. 

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GNSS Receivers

GNSS Receivers process the Signals in Space (SIS) transmitted by the satellites, being the user interface to any Global Navigation Satellite System.

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GNSS Applications

GNSS applications are applications that use GNSS systems for it their functionality.

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