2 questions!

Phillip Lancaster

Active Member
1. When is Linux happening?

2. When is Galileo/Bds/Irnss going to be used by LS?

Past two days in my area (north central Arkansas) was terrible. Just seemed like the LS was struggling all the time.
 

Darren Clemons

Well-Known Member
Linux is still a couple months away. Galileo is a few months away still too. These things need to be tested thoroughly and proven to be reliable before being released.
We will most likely will not notice all that much difference in the operation of J Field, I'm thinking, with the Linux change. Just overall speed and performance should/will be better. Is that correct?
For instance, moving or translating hundreds of points takes quite some time now. When going into collect or stake screens in a job with several hundred points, there is quite a lag time for the points to load there as well.

So would it be a low/medium/high probability that we could be using the LS with Galileo sats by early 2018?
I remember reading somewhere, I think maybe Javad said it, that using info from more than 20 total satellites might not be much of an advantage anyway....something to the effect of only being able to process and use so many....please correct me if I'm mistaken.
Obviously Galileo will be a help or it wouldn't be worked into the LS. Maybe filter out weaker signals and use only the 20 best/strongest....
Will certainly be anxious to see this up and running....can't hardly imagine the LS getting even better :D
 

Patrick Garner

Active Member
And does Javad expect to charge for the Galileo option once it's available?

Darren, I think the advantage of having a third constellation of satellites is that when the other GNSS birds are low on the horizon, Galileo may offer a few that are at more advantageous angles. And I agree that it's likely the LS will filter out weaker signals. I see no downside to having greater numbers to choose from.
 

Matthew D. Sibole

Well-Known Member
5PLS
There is a charge to update the 1M to the other constellations. However, the LS is fully functional and is capable of tracking all constellations with no upgrades.
 

Matt Johnson

Well-Known Member
5PLS
We will most likely will not notice all that much difference in the operation of J Field, I'm thinking, with the Linux change. Just overall speed and performance should/will be better. Is that correct?
Yes and hopefully no more camera crashes.

I remember reading somewhere, I think maybe Javad said it, that using info from more than 20 total satellites might not be much of an advantage anyway....something to the effect of only being able to process and use so many....please correct me if I'm mistaken.
You are referring to this thread: https://support.javad.com/index.php?threads/ls-use-of-galileo-etc.2395/

I wouldn't expect to see an improvement in RTK performance until more Galileo satellites are operational. When 5 or more are visible and operational at any one time, it may start to provide benefits. You can see the status and schedule of Galileo satellites at https://en.wikipedia.org/wiki/List_of_Galileo_satellites.
 

Patrick Garner

Active Member
When 5 or more are visible and operational at any one time, it may start to provide benefits.
Matt, wouldn't the LS pick up signals from whatever is out there--GPS, GLONASS, Galileo? In other words, I would assume that the LS doesn't care if there are 5 sats or only 2 before it begins to recognize them. It simply should be receiving the best signals from everything in the entire constellation of satellites, right? I would guess it's going to happy if there are 5 GPS, 6 GLONASS and 2 Galileos. Or 7 GPS, 4 GLONASS and 3 Galileos.
 

Matt Johnson

Well-Known Member
5PLS
Matt, wouldn't the LS pick up signals from whatever is out there--GPS, GLONASS, Galileo? In other words, I would assume that the LS doesn't care if there are 5 sats or only 2 before it begins to recognize them. It simply should be receiving the best signals from everything in the entire constellation of satellites, right? I would guess it's going to happy if there are 5 GPS, 6 GLONASS and 2 Galileos. Or 7 GPS, 4 GLONASS and 3 Galileos.
Each new system you add introduces a time synchronization variable that must be solved during RTK processing so less systems is better if you are assuming the number of satellites remains the same. For example 9 GPS and 6 GLONASS would be better than 6 GPS, 5 GLONASS and 4 Galileo.
 

Phillip Lancaster

Active Member
"Loading layers" and "Reading objects", then watch the counter, is the screen I see the most. It's really not but it seems like it is. I have a 40+ mile route survey that has the job broken up to many different pages that show different owners property lines along the route. Even broken up on pages this message is painful every time I start the job, "Loading layers" - "Reading objects". Ooops need to edit a point. Sure. Then go back to collect...."Loading layers" - "Reading objects" and just sit back and watch the counter again. I'm looking forward to the Linux move and this is great news!
 

Mikhail Drakin

Developer
5PLS
Matt, while Linux transition promises to make many things faster and eventually more stable, I would not advertise specific performance numbers right now. Many things under Linux are not implemented (like camera) or not settled yet. When this reaches release, something will become faster, but something may become a bit slower than now (though still faster than under Windows).
 
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