What is the best egnos/Wass or glonas

Robt

Member
Location
Suffolk
Egnos is the European correctional signal accurate to 35-50cm pass to pass,
WAAS is the North American correctional signal accurate to 35-50cm pass to pass
Glonass is a saterlitr constellation not a correction source despite what some say
 

PSQ

Member
Arable Farmer
Rangepoint = EGNOS + GLONAS = 18 to 20 Satellites at any given time = good enough for drilling.

If you farm 1000's of acres, then RTK makes sense.

But if you're farming less, then Rangepoint also makes a lot of sense. Unlike RTK it will drift overnight, even over lunchtime. But there are 'ways and means' to make it work very well for the 'smaller' or more prudent farm, like using the side markers on the last pass before lunch and 'lousing time' ('lousing' = setting your draught horse 'lose' in a paddock at night*).

Which is (partly) why I can 'justify' three (2nd hand) Rangepoint 'EZ Steer' units on 450 acres, where the subs cost less than the subscription cost of a single RTK sub; and the hardware for all 3 came in at about the same cost as the hardware and unlock codes for a single RTK unit :whistle:


[* - I still can't believe that the guys I started working with in the 1970's spent their youth walking behind draught horses. And yet the youth *born* in the 1970's moan like a bitch, because their satellite controlled 'Tier 4b' air-conditioned and air sprung 'throne' doesn't connect to Bluetooth. Apparently "Tarquin has a new John Deere that drives itself, which means he can spend more time talking to his girl friend Chlamydia" :facepalm:]
 

Tractor Boy

Member
Location
Suffolk
Rangepoint = EGNOS + GLONAS = 18 to 20 Satellites at any given time = good enough for drilling.

If you farm 1000's of acres, then RTK makes sense.

But if you're farming less, then Rangepoint also makes a lot of sense. Unlike RTK it will drift overnight, even over lunchtime. But there are 'ways and means' to make it work very well for the 'smaller' or more prudent farm, like using the side markers on the last pass before lunch and 'lousing time' ('lousing' = setting your draught horse 'lose' in a paddock at night*).

Which is (partly) why I can 'justify' three (2nd hand) Rangepoint 'EZ Steer' units on 450 acres, where the subs cost less than the subscription cost of a single RTK sub; and the hardware for all 3 came in at about the same cost as the hardware and unlock codes for a single RTK unit :whistle:


[* - I still can't believe that the guys I started working with in the 1970's spent their youth walking behind draught horses. And yet the youth *born* in the 1970's moan like a bitch, because their satellite controlled 'Tier 4b' air-conditioned and air sprung 'throne' doesn't connect to Bluetooth. Apparently "Tarquin has a new John Deere that drives itself, which means he can spend more time talking to his girl friend Chlamydia" :facepalm:]
Rangepoint is nothing to do with Glonass or Egnos. Glonass is the Russian constellation of satellites, GPS is the American ones. Together these give you more satellites to track to give you a more accurate position. Egnos is then the European correction signal whereas Rangepoint is an alternative more accurate correction signal.
 

PSQ

Member
Arable Farmer
Rangepoint is nothing to do with Glonass or Egnos. Glonass is the Russian constellation of satellites, GPS is the American ones. Together these give you more satellites to track to give you a more accurate position. Egnos is then the European correction signal whereas Rangepoint is an alternative more accurate correction signal.
Wrong on just about every count.

- Rangepoint RTX is a combination of EGNOS (European constellation) and GLONAS (Russian constellation).

GPS is the American ones

Nope, that would be WASS

You're confusing Rangepoint RTX with Centrepoint RTX, which is a poor relation to RTK, for similar money (n)
 

Andy26

Moderator
Arable Farmer
Location
Northants

Wrong on every count.


- Rangepoint RTX is a combination of EGNOS and GLONAS.



Nope, that would be WASS
Rangepoint is a satellite correction signal provided by Trimble.

WAAS is an American correction signal to supplement the American GPS satellites in the same way Egnos is a correction signal to supplement GLONAS, GPS and Galileo satellites.
 

Tractor Boy

Member
Location
Suffolk
Wrong on just about every count.

- Rangepoint RTX is a combination of EGNOS (European constellation) and GLONAS (Russian constellation).



Nope, that would be WASS

You're confusing Rangepoint RTX with Centrepoint RTX, which is a poor relation to RTK, for similar money (n)
Sorry but that's rather rude as you are completely wrong!
 

PSQ

Member
Arable Farmer
Sorry but that's rather rude as you are completely wrong!

Rangepoint is nothing to do with Glonass or Egnos. Glonass is the Russian constellation of satellites, GPS is the American ones. Together these give you more satellites to track to give you a more accurate position. Egnos is then the European correction signal whereas Rangepoint is an alternative more accurate correction signal.

Ok, you're right, it's powered by fairies and pixy dust :facepalm:

EDIT - almost forgot the Chinese BeiDou constellation, although no satellites were 'in view' last time i searched for them..
 
Last edited:
Agreed, but it's still a combination of the EGNOS and GLONASS satellite constellations.
- Rangepoint RTX is a combination of EGNOS (European constellation) and GLONAS (Russian constellation).

Sorry PSQ my old mucker, but on this very rare, isolated occasion you're very wrong.

EGNOS is most certainly not a proper "constellation" - in the sense of an orbiting group of non-geostationary Global Navigation Satellite System (GNSS) birds. In the way that GPS, GLONASS, Galileo, Bei Dou and QZSS actually are proper GNSS constellations!

EGNOS is actually 3 (2 in active operation, 1 standby/spare) geostationary satellites that transmit correctional messages calculated using ground base stations and beamed up to the serving EGNOS satellites (or in their words a Satellite Based Augmentation System) and then to our receivers to improve their "raw" position from the CA civilian navigation signals received from space.

On its own if you could just receive EGNOS service then it would be no good to you from a precise point positioning - it needs to be used in conjunction with at least one (and better more than one) actual navigation service signals from either or more than one of the list above.
 
The other thing to bear in mind is that EGNOS just operates over Europe - it has a distinct footprint (because it's beamed down from geostationary satellites).

Technically it is totally comptible with other satellite based augmentation services (SBAS) in other parts of the world - the best known one being WAAS in North America but there is also MSAS in Japan and GAGAN over the Indian subcontinent.

They are all compatible as they are based on the same technical standard, so a receiver that can process EGNOS 'augmentation' can also process WAAS etc services if it was used in that part of the world or MSAS in Japan etc.

RTX is the proprietary, commercial and paid for equivalent of the "free" SBAS services I've mentioned. As you know it comes in two main accuracy flavours RangePoint (sub meter) and CenterPoint (centimetre class).

The Trimble services are more or less global too unlike EGNOS etc which are strictly regional. The Trimble correction services can also be delivered to your receiver by mobile network/cellular as well as satellite. Again this depends on your country.

Obviously RTX services are just Trimble receiver only, kind of goes without saying.
 

SFI - What % were you taking out of production?

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Red Tractor drops launch of green farming scheme amid anger from farmers

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As reported in Independent


quote: “Red Tractor has confirmed it is dropping plans to launch its green farming assurance standard in April“

read the TFF thread here: https://thefarmingforum.co.uk/index.php?threads/gfc-was-to-go-ahead-now-not-going-ahead.405234/
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