-
8/13/2019 Air Navigation GNSS
1/13
Apostu Iuliana-Andreea
Ciuban Sebastian
Mciuc Rodica
Mitran Teodora
-
8/13/2019 Air Navigation GNSS
2/13
Table of contents
1. Introduction
2. Operating principles
3. Disturbance
4. Augmentation systems
5. Differential Global Positioning System (DGPS)
6. European Geostationary Navigation OverlayService (EGNOS)
7. Advantages of satellite navigation in aviation
-
8/13/2019 Air Navigation GNSS
3/13
1. Introduction
GPS (Global PositioningSystem) is a system ofsatellite
navigation whichallows determination of
every globe position withhelp from signals receivedfrom
satellites. Themeasurement accuracy
with such a system variesbetween 30 meters(military) and 150
meters(commercial).
-
8/13/2019 Air Navigation GNSS
4/13
2. Operating principles
The satellitescontinuously broadcastsignals that
containinformation about their
position, the status andthe exact time. Knowingthese
information,we candetermine the distance
and we can calculate theposition of the objectusing the
trilaterationmethod.
-
8/13/2019 Air Navigation GNSS
5/13
3. Disturbance
Interference with radio broadcasts on UHF
Plants VOR (VHF Omnidirectional Range) and
DME (Distance Measuring Equipment)
May lose satellite position on curves
Elements of structure
Electromagnetic and atmospheric disturbance
-
8/13/2019 Air Navigation GNSS
6/13
4. Augmentation
systems
Basic GPS gearevolved through the
next systems:
-ABAS (Aircraft Based
Augmentation System)-SBAS (Satellite Based
Augmentation System)
-GBAS (Ground Based
AugmentationSystem).
-
8/13/2019 Air Navigation GNSS
7/13
5. Differential Global
Positioning System (DGPS) For improving the
accuracy in
determining the
position an improved
GPS system namedDGPS has been
developed. The
information received
from two or more
receptors are
compared every
moment with precise
data from a station.
-
8/13/2019 Air Navigation GNSS
8/13
6. European Geostationary Navigation
Overlay Service (EGNOS)
EGNOS is the first project in
the GNSS field of Europebeing the precursor of
GALILEO.
-
8/13/2019 Air Navigation GNSS
9/13
Being composed from 3geostationary satellitesand a network of 3
fixedstations positioned onground, EGNOS fulfillshis purpose
bybroadcastinginformation that
contain the sent GPSsignals accuracy andconfidence.
-
8/13/2019 Air Navigation GNSS
10/13
-
8/13/2019 Air Navigation GNSS
11/13
Advantages offered by EGNOS
Safety improvement during flight operations.
Minimizing the operational cost by eliminating theneed for
auxiliary navigational gear in airports.
It allows the aircraft to land in hard weatherconditions
It reduces the fuel consumption and the CO2emissions
It increases the quality of horizontal and verticalguiding of
the aircraft
Free service provided
-
8/13/2019 Air Navigation GNSS
12/13
7. Advantages of satellite navigation
in aviation
Continuous and accurate positioning in every
flight stage
Free service provided
Increases the safety level during specific flight
operations
Reduces the fuel consumption
Better route planning
Continuous monitoring of aircrafts
-
8/13/2019 Air Navigation GNSS
13/13
BIBLIOGRAFIE
http://www.esa.int/ESA
www.wikipedia.org
http://www.navipedia.net/ ,,Navigatie Aeriana Dumitru Popovici
si
Constanting Popescu
http://www.esa.int/ESAhttp://www.wikipedia.org/http://www.navipedia.net/http://www.navipedia.net/http://www.wikipedia.org/http://www.esa.int/ESAhttp://www.esa.int/ESA
