Well, they have been busy.
They have come up with a new base station, that tracks 4 constellation.
GPS, GLONASS, GALILEO, and BIDEU
Now, that's really not news. Most Mfr's are doing that.
But, it really improves things in canopy.
And, RTPK is revolutionary. It's a form of static, that happens side by side with RTK.?ÿ
They still won't hire me.?ÿ
But it is revolutionary gear.
Nate
RTPK does look nice. Are there any Javad dealers in New England?
John Evers
9055 State Route 56 SE,Mount Sterling,OH,43143,United States
?ÿJohn Evers
?ÿjohn@pssllc.com
?ÿ740 845 1422
Matthew Johnson
?ÿ5709 Snow Drive,Hilliard,OH,43026,United States
?ÿMatt Johnson
?ÿmattjohnson00@gmail.com
?ÿ614.327.4036
I've talked w John Evers, he's a land surveyor.
I've exchanged communications with Matt Johnson I think he's an engineer.
Unless there is someone I don't know about, those are the ones I know about.
My opinion about the javad system for ability to give solid answers, in canopy, is its top shelf.
Their cogo still needs some improvement. For now, keep a laptop in the truck. It transfers fast.
It's literally a survey crew in a box, that does not need a weekly check.
Nate
?ÿ
John Evers
9055 State Route 56 SE,Mount Sterling,OH,43143,United States
?ÿJohn Evers
?ÿjohn@pssllc.com
?ÿ740 845 1422
Matthew Johnson
?ÿ5709 Snow Drive,Hilliard,OH,43026,United States
?ÿMatt Johnson
?ÿmattjohnson00@gmail.com
?ÿ614.327.4036
I've talked w John Evers, he's a land surveyor.
I've exchanged communications with Matt Johnson I think he's an engineer.
Unless there is someone I don't know about, those are the ones I know about.
My opinion about the javad system for ability to give solid answers, in canopy, is its top shelf.
Their cogo still needs some improvement. For now, keep a laptop in the truck. It transfers fast.
It's literally a survey crew in a box, that does not need a weekly check.
Nate
?ÿ
I haven??t had near enough time to get up to speed with my new triumph (long sidebar- I equate javad, and the users of, to those cats you knew who had 100 channel EQ stereos and would go futz with the eighth mid-range slider every time a new song came on the new Todd Rundgren album), but I have done some perfunctory as-built shooting with it and yes- it??s damn impressive.
$19k is really too much for me as a once every other week surveyor, but I wonder what the performance improvements would be for network RTK with the older LS with RTPK?
MACORS network uses GPS and Galileo.
Mark, here are 2 more guys, that are closer, but I don't know if they are active.
63 Liberty Street,Monticello,NY,12701,United States
Michael Joyce
jsma@frontiernet.net
607-426-8150
1283 Bear Creek Rd.,Woodgate,NY,13494,United States
Duane Frymire
dcfpls@hotmail.com
frymirelandboundaries.com
315-392-2384
$19k is really too much for me as a once every other week surveyor, but I wonder
I am a 2 day a week in the field surveyor. I cannot keep up with the office work at this rate.
Now, I'm going to make a statement, that can be converted into a tool to throw me in the trash, or can explain a good product.
I have not looked through a Total Station since I got the JAVAD. I had to use a total station with the TOPCON. But, if you were willing to take the TIME, you could often get the truth. This would be 20 minutes to 1 hour. It could be done in light canopy.
Now, JUST because you have a FIX, does not mean it is giving you the truth. In canopy, you MUST have redundancy.
With Topcon, (TDS data collector) you had to MANUALLY shoot a point a number of times, over a period of time. Typically, you really wanted about 15 minutes, per shot in canopy, AT A MINIMUM. Often, an hour. You wanted 2-3 shots, with TIME SEPARATION. If you got 2 shots, within 0.12', that were 12 minutes apart, in light canopy, you were pretty good. In HEAVY canopy, that was 30 minutes to an hour. IF they did not agree, then you HAD to stay until you got enough data, to really understand that you have the shot. GPS is a STATISTICAL measuring tool. I carried a total Station often.
With the Javad, in heavy canopy, and with ONE shot, figure it could be off by 0.16', But, if you are willing to take the time, you can get 4-5 shots, within 0.12', with one of those outlying, by a few hundredths. This is an impossible number to pin down, (no pun intended) because the sat geometry is continuously in change. Over 50% of the time, a single shot is within 0.10' or 0.08'. BUT to be sure, you should get it 2-3 times, looking at shot spread.
What the JAVAD does, is it sits, and clicks, and analyzes, until it has HIGH confidence, that is NEAR 100% sure. If it is an important boundary point, get it a number of times.
I JUST got a T-3. It boosted my speed by perhaps 25% in canopy. I need to upgrade the LS to an LS +, which I plan to do soon.
ANYWAY, any statistical tool benefits by MORE DATA POINTS. Javad automates that, and runs fast in the open, and light canopy, as it gets dense, take a little more time. Think of it as LETTING your crew (in the box) chop line, and you have to wait a little while.
IF you get in a hurry, you can loose accuracy. But, Javad is great in canopy, IMHO.
Nate
I hear ya Nate. I haven't pulled out a robot in well over a year. I really don't do any boundary work. I'm a PE, LSIT (but been thinking about sitting for my survey stamp). With about 5 years of RTK GNSS, I "think" I've gained enough experience to know which shots I can trust and which I can't, and will go back for redundancy as needed. The only work I do under heavy canopy is locate wetland flags, staking limit of tree cutting or limit of silt fence. I always let my clients know of the limitations. I believe I would have more confidence with the Javad and likely save some time and possibly lead to other work I hand off.?ÿ
