Reply
 
Thread Tools Search this Thread
 
Old 20 April 2010, 11:21   #1
Member
 
HUMBER P4VWL's Avatar
 
Country: UK - Wales
Town: N Wales Chester
Boat name: Mr Smith
Make: Humber
Length: 6m +
Join Date: Feb 2009
Posts: 5,013
Help -Does EGNOS GPS now cover North Wales?

Reading my Navman 5500 it says that EGNOS will cover Europe from 2003, but do not turn this option on unless you are in a covered area or position will be wrong.

Standard GPS is accurate to 10m 95% of the time, with EGNOS it will be accurate to 5m 95% of the time.

As EGNOS is not on when in default settings, should i now turn this on as it is 2010?!
__________________

__________________
HUMBER P4VWL is offline   Reply With Quote
Old 20 April 2010, 11:25   #2
Member
 
HUMBER P4VWL's Avatar
 
Country: UK - Wales
Town: N Wales Chester
Boat name: Mr Smith
Make: Humber
Length: 6m +
Join Date: Feb 2009
Posts: 5,013
History lifted from Irish Pigeon Homing Union

WAAS, EGNOS, MSAS and GLONASS

The rest of the world were not going to let the Americans have it all their own way, and so other systems were developed around the world.

In answer to the US military, the Russian military established their GLONASS system (Global Orbiting Navigation Satellite System)

As an aid to navigation, non-military systems were also developed, which correct the errors of the military systems.

WAAS (Wide Area Augumentation System) is maintained by North America.

MSAS (Multifunctional Satellite Augumentation System) is developed by Japan and other Asiatic countries.

EGNOS European Geostationary Navigation Overlay Service is maintained by the European Commission, the European Space Agency and the European Organisation for the Safety of Air Navigation.

In principle, all systems are the same and even more astinishing, the systems are compatible to each other.

For obvious reasons, EGNOS is of more interest to us in this part of the world, and it entered its pre-operational phase in 2006. It is Europe's first activity in the field of global navigation satellite system, and is a precursor to Galileo, the full global navigation system under development in Europe. Consisting of three geostationary satellites and a network of ground stations, EGNOS achieves its aim by transmitting a signal containing information on the reliability and accuracy of the positioning signals sent out by the American GPS system and the Russian GLOSNASS system. It allows users in Europe and beyond to determine their position to within 2 metres.

By the way, with all the error correction satellites going up, there seemed little sense in the Americans continuing their 'Selective Ability' built in error, so as of 1st May, 2000, it was discontinued, and the GPS error now ranges around the 20 metre mark.

We are glad to report that the Irish Homing Union Differential GPS system in operation uses EGNOS, and we believe our calculations to be accurate to a metre of even less.
__________________

__________________
HUMBER P4VWL is offline   Reply With Quote
Old 20 April 2010, 11:50   #3
RIBnet supporter
 
Erin's Avatar
 
Country: UK - Channel Islands
Town: A large rock
Boat name: La Frette
Make: Osprey Vipermax
Length: 6m +
Engine: 200 Suzzy
Join Date: May 2004
Posts: 2,830
I'm sure I've got WAAS/EGNOS turned on on my plotter and the satelite signal strength bars show a little 'D' symbol to represent a differential fix when they are receiving corrected data from sats Nos 33 and 44.
__________________
Erin is offline   Reply With Quote
Old 20 April 2010, 12:17   #4
Member
 
HUMBER P4VWL's Avatar
 
Country: UK - Wales
Town: N Wales Chester
Boat name: Mr Smith
Make: Humber
Length: 6m +
Join Date: Feb 2009
Posts: 5,013
Cheers, I'll turn mine on then! Might as well use it if it's twice as accurate or more!
__________________
HUMBER P4VWL is offline   Reply With Quote
Old 20 April 2010, 15:40   #5
RIBnet admin team
 
willk's Avatar
 
Country: Ireland
Make: Redbay Boats
Length: 9m +
Engine: 370hp
Join Date: Feb 2008
Posts: 12,926
RIBase
Another success for the Irish Pigeon Homing Union.

Mollers will be "trilled"
__________________
willk is offline   Reply With Quote
Old 20 April 2010, 17:18   #6
Member
 
HUMBER P4VWL's Avatar
 
Country: UK - Wales
Town: N Wales Chester
Boat name: Mr Smith
Make: Humber
Length: 6m +
Join Date: Feb 2009
Posts: 5,013
Quote:
Originally Posted by willk View Post
Another success for the Irish Pigeon Homing Union.

Mollers will be "trilled"
Should have realised this thread would be bird feed for inuendo!
__________________
HUMBER P4VWL is offline   Reply With Quote
Old 20 April 2010, 18:17   #7
RIBnet admin team
 
willk's Avatar
 
Country: Ireland
Make: Redbay Boats
Length: 9m +
Engine: 370hp
Join Date: Feb 2008
Posts: 12,926
RIBase
Quote:
Originally Posted by HUMBER P4VWL View Post
Should have realised this thread would be bird feed for inuendo!
I never pass up on a cheep laugh
__________________
willk is offline   Reply With Quote
Old 23 April 2010, 06:56   #8
Member
 
HUMBER P4VWL's Avatar
 
Country: UK - Wales
Town: N Wales Chester
Boat name: Mr Smith
Make: Humber
Length: 6m +
Join Date: Feb 2009
Posts: 5,013
put my 5500 back to factory settings as id buggered it up using plotter etc.

Noticed that the EGNOS is on anyway. Fair enough. Manual was written 2003, unit sold 2008, obviously they had changed the software settings.
__________________

__________________
HUMBER P4VWL is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 05:30.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.