Here, purple on posts and trees near property lines specifically means, "No hunting allowed without written permission of the landowner".?ÿ That opens the door for the game warden to ask to see said written permission from any and all hunters that he encounters, so long as the perimeter of the property has some conspicuous purple paint.
That said, I don't think it's likely my r10 would ever gain a fix in that position, at least not more than once with no way to verify the shot.?ÿ
Somehow, I believe that javad is running an "open squelch", meaning that I probably have somewhere around 4-600 fixed solutions on that shot. How much is thrown out, and how much is kept is a variable. Total time separation between fixes is taken into account. It quits when it is confident that it got the shot within about 0.15'. When you start getting that much data, through the trees, in places like that.... It'll make a Javad fan outa a surveyor, who understands what he's getting.
@stlLSurveyor, I don't know current prices. I'm just a food source for ticks! I don't work for javad. They work for me!
I like good data.
Nate
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The larger manufacturers produce and sell an entire suite of terrestrial geospatial equipment - not just GNSS receivers - plus field and office software packages, designed for fast transfer of all types of data between office and field and consolidation of a multitude of data from many different sources for processing, analysis and production.
It's a full-service package deal, in other words, and verges on a turnkey solution. Most geospatial firms, especially mid- to large-size shops, need as much standardization as they can get. Mixing and matching gear can be a headache even for an expert or power user.
I'm sure Javad is fantastic if you rarely need to work with a total station or a level, or if you don't have multiple crews in the field who might not have the background technical expertise to use the advanced features of the Javad gear.
I think you have many valid points there. Especially in construction industry, where a robot is needed, or a complete integration of tight levels, with other data. Many people got started in this construction side, and are familiar with the gear, and are now starting their own company.
Or, where there is machinery with GPS, and it all must integrate.
Boundary work is where Javad shines.
I even think that in BLM, where retracement is an all day long thing, the Javad system has clear potential. For this to work out well, personell need to be trained, and or have good support.
I have several surveyors, around here, who USED to perform less than great work. They got Javads, and their work has come WAY UP. But, it's mostly boundary cadastral work.
Have a great day, and thanks for your comments.
Nate
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all in a days work. Shot spread 0.061. 1st two shots. I??m getting a 3rd now.?ÿ
makes ya grin like a Javad user!
@nate-the-surveyor How did the 3rd shot fit?
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I wish my area had that many holes in the trees for our units!
Max shot spread was 0.10'.
It's a section corner. The top of the monument was displaced about 0.50' out of plumb, by the tree. But, that's an estimate. It was an Arkansas Geological Commission monument. Set by my dad. Late 1980's or so. I can post a screen shot later, when I'm at the office.
Nate
It is all about the checks available real time to give you a warm fuzzy feeling about a shot.?ÿ There is a ton of information available on the Javad screen to allow you to decide whether you should stay there longer and accept and move on.?ÿ ?ÿIt can also be set to run automatically per set parameters such as wide open, mid canopy, heavy canopy.?ÿ I prefer to keep a close eye on the screen generally because each shot is a little unique.?ÿ Having the screen and head all as one unit is a monstrously huge advantage when going through the brush.?ÿ I've cussed a blue streak in the past with a 2 meter rod and an attached clunky data collector snagging on every little branch and vine.?ÿ Now I can collapse my rod in 4 seconds to 18", tuck the whole kit and caboodle under my arm, and crawl down every little deer trail and rabbit path in the state with no fuss.?ÿ Until you have experienced that freedom of movement, you've not lived.?ÿ I feel like a fire and brimstone preacher on that particular subject.?ÿ Lean and fast.?ÿ Because everything I need to carry around is so easy to haul, my solo surveying career can go much longer into old age than if I had to haul a tripod, rod, gun, and data collector and walk the traverse line 5 times just to carry assumed coordinates around a property.
?ÿ ?ÿAll of the information available to the average user is a lot to wrap your head around, and probably a lot to teach to field crews but easy to use once you catch on.?ÿ That may be why there isn't one in every office.?ÿ My buddy just bought his first zero turn mower this week, having never been on one before.?ÿ They are fantastic mowers but don't drive at all like anything else.?ÿ He is jerking around his yard, going left when he thought he should be going right and completely unable to go in a straight line.?ÿ Have you ever watched someone for the first time on a zero turn.?ÿ Its funny.?ÿ Javad is a lot like that.?ÿ Not at all like anything else, but it can be learned without too much trouble and then you can zip around your project incredibly fast.
Hey Tom,
Great review but your forgot about the J-tip metal locator that sits in my vest pocket.
Licensed Land Surveyor
Finger Lakes Region, Upstate New York
Here are the 3 Screen Shots associated with the above Section Corner.
There first one finished with 3-2 minute RTPK shots.
The second one, finished with RTK, and So did the 3rd Shot.
Point number is 1830A is the WEIGHTED average of the 3 shots.
This section corner leans EAST about, 0.50', by my GUESS, as the big PINE has grown, and displaced the monument.
Here is a screen shot in Carlson/Acad, so you can see them.
In the above3 screen shots, (taken from the Javad LS) you can see alot of information is shown, such as DISTANCE to last, (Green Highlighted buttons, on 2nd and 3rd shots) and it shows a HORIZONTAL and VERTICAL graphic, showing what is going on, for later review, if it is desired.
I know some of you might not be interested in DETAILS, but I am a creature of detail, and I like it.
Nate
Nate
What are the numbers in green meant to represent?
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Those numbers in GREEN represent the SIZE of the LEFT box,?ÿ and the SIZE of the right box, as shown directly above their green box. So, that BOX on the left (horizontal) is 0.207 square, and the right hand box (vertical distribution) is 0.308 square. This is why the AVERAGE coord it made, 1830A is very close to the RTPK position, as the RTPK coord BOX is not shown. Only the RTK one is.
I want the Javad LS to SHOW the RTPK box, when that is the coord used. But, it is not that way for now.
In the LEFT pane, you see a small box in the middle. This is the RTK coord, relative to the scatter plot. The red * is the RTPK coord.
In the RIGHT (Vertical) pane, you see a finer black line. This is RTK. Then, a fatter red line. This is the RTPK elev. Scatter plot.
If you look directly above those Panes, (Look at the last or 3rd screen shot) you see RTPK FIX (3): 0.020, -0.058, -0.135
This means, from the RTK little box, to the RTPK * observation, it is 0.020 NORTH, -0.058 WEST, and -0.135 DOWN to the RTPK coordinate. When you look at the horiz and vert panes, you can see this graphically.
The graphic is showing the outliers, to caution you, that if it's critical, to observe multiple times.
This warns you to do it multiple times, to develop more certainty.
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Nate
After running this system for over 5 yrs. I'm persuaded that as more of these get into common use, that overall quality of surveying is impacted. And, that there is an overall improvement in quality of work. Both in terms of more accuracy, but in more monuments per day tied, so that good work gets better.
It's a tool. In the right hands, only good comes from it.?ÿ
Overall, it's been good.
Nate
@nate-the-surveyor Thanks for the explanation of the entire screen Nate.?ÿ That is one VERY busy screen.?ÿ Probably takes a minute or two to get used to that display.
My Nate surveying version: Went out last Friday to stake line through the timber, looking at the photo there is a pickup that fencers are using uphill from a corner I set. From there the line goes up the hill just skirting the small open park and also heads off to the right of the pickup along a tree and brush covered ravine until it breaks out into scattered timber. The R10 handled it all, took some time for some shots, I averaged about 120' per line point.?ÿ
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