Not sure this is the right place to post these questions. I am not looking for questions on how to survey but more so the process of completing a survey with some steps because I am unfamiliar with using a spectra precision data collector and a nikon 2nd total station.
I will be using a pectra precision data collector that has survey pro 5.7.1 on it. The Total Station is alrigty synced to the data collector thru bluetooth.
So back in January I posted a topic because I did not know how to run a traverse using a data collector. I was use to using a leica total station that had the traverse function on the total station already, so when i got to a point to close my point and my angle the survey pro traverse function would not let me close into my first backsite point which was called point A. Survey pro gave me an error and said this forsite point could not be used or something like that, so I was set up on point f backsiting e but could not forsite to point a. Someone said I needed to use the next letter point g and some how it can get adjusted by pulling the raw data off the data collector....could not figure out how to do it I tried doing the adjustment in the data collector because I tried to follow a few different youtube videos to figure out how to do it. Turned out to be a epic fail and adjusting all the points and the traverse points and all the columns and targets I shot were adjusted way wrong.
First question. How do you close a traverse using survey pro, and how do you close the angle?
Second question. How do you pull the raw data off the Spectra precision Data collector, it is a windows based operating system?
3rd question. This Traverse i have to run on a upcoming job will consist of 8-10 traverse points. I know start with long backsite then flip flop short forsite....I believe that is correct. The points I will be shooting is maybe 50-100 Targets and a handfull of columns ....is is better to run the traverse, shoot the columns then get the data adjusted then shoot the targets? or get everything adjusted at once?
If anyone can help me out that would be great... I will be happy to leave my email address and my phone number if you can take the time to help. I memeber here Jimmy tried to help me alittle hope he can help me again...lol....
Jamie Gilbert, post: 428725, member: 12421 wrote: Second question. How do you pull the raw data off the Spectra precision Data collector, it is a windows based operating system?
It is windows based. You connect the dc to your computer by USB wire. Have Windows Mobile Device Center on your computer. In the dc you export the raw data to any of several formats. I use the .job/raw, .jxl, and .csv formats. Copy and Paste to transfer.
I have never attempted to adjust a traverse on the dc, although I believe it is possible. I use StarNet. Whenever you retie a point number that has already been tied before SP (indeed, most all dc software will do this) is going to warn you that the point has been tied before. Do you wish to average the coordinate values, overwrite the old coordinate value, or just store the observation without recalculating the coordinate? You can use that point again, no problem. But there are consequences.
If you are running a closed traverse long and short backsights/foresights aren't really a thing. You can expect angular errors (ie/centering/sighting errors) to be larger wherever a short sighting is made. Whether it is on the foresight or on the backsight is not really relevant. For a closed traverse. If you are going to be side-tying a bunch of columns you are going to want a fairly long backsight so that you don't have a big centering/sighting error in every backsight, repeated for every column tie.
At first, I thought the "$urvey Procurer" had been run over... Mmm hmmm!
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Mark Mayer, post: 428745, member: 424 wrote: It is windows based. You connect the dc to your computer by USB wire. Have Windows Mobile Device Center on your computer. In the dc you export the raw data to any of several formats. I use the .job/raw, .jxl, and .csv formats. Copy and Paste to transfer.
I have never attempted to adjust a traverse on the dc, although I believe it is possible. I use StarNet. Whenever you retie a point number that has already been tied before SP (indeed, most all dc software will do this) is going to warn you that the point has been tied before. Do you wish to average the coordinate values, overwrite the old coordinate value, or just store the observation without recalculating the coordinate? You can use that point again, no problem. But there are consequences.
If you are running a closed traverse long and short backsights/foresights aren't really a thing. You can expect angular errors (ie/centering/sighting errors) to be larger wherever a short sighting is made. Whether it is on the foresight or on the backsight is not really relevant. For a closed traverse. If you are going to be side-tying a bunch of columns you are going to want a fairly long backsight so that you don't have a big centering/sighting error in every backsight, repeated for every column tie.
Thank you for the information. I have a few more question. I am running a 4 point traverse I created my known point 1 backsighted into a unknown point 2 foresited point 3 in my traverse. moved to each set up on each traverse point. My closing point is point 4? or is it 2 (the first backsite I set up) and which points do I close the angles on. If you are confused I will show you what I did
Made a point (tp1 5,000 5,000 elev. 0)
Set the azmeth to a unknown point tp 2 which is my backsite
Pressed Traverse
Foresited to tp 3
Moved to each set up through the traverse program not sure which point I make my closing point I believe point 4 because that is my last point, and I believe I close the angle on traverse point 2 but it will not allow me to use the number 2 it says it cannot be over written in the data collector so I used point number 5, but I want to close into traverse point 2 not 5????? This is where this traverse program is confusing compared to leica traverse program.
How do I close this traverse? I looked on youtube found 2 videos on traverse programs that is simillar to the survey pro that I am using one of the video states "will show you how to close the traverse in the next video" well there is no next video. Only video that resembles the next video on closing a traverse is a video where he picks each point to adjust the traverse in the data collector but it never states how he closed the traverse...
Thanks in advance if you can help me.
Well, since no one else has responded...
In my view you have already closed your traverse. Inverse between points 2 and 5. The difference between the two is your mis-tie. If your traverse is small you should be under 0.05'. Add up the total length of your traverse (i.e. distance from pt 1 to pt 2 + distance from pt 2 to pt 3+ etc.) and divide by your mis-tie to get your "error of closure". With modern equipment it should be better than 1:10,000. My traverses generally close between 1:20,000 and 1:50,000. I site a range pole for backsight and foresight. It you used tripods you should do much better.
It sounds like you want to perform some kind of adjustment to your traverse. I don't do that. If my closure ratio is too low (less than 1:10,000), then I have an error in my traverse. I find the error and correct it before continuing. I hope this helps.
