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The3rdDimension
The3rdDimension
@bc-surveyor
Member
Joined: September 21, 2018 9:39 am
Last seen: April 9, 2026 12:52 pm
Topics: 106 / Replies: 176
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RE: My Least squares adjustment needs fixin'

Good point on the centering errors, I made that adjustment along with my vertical angles the chi values for zeniths is about spot on with the rest now...

4 years ago
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RE: My Least squares adjustment needs fixin'

That makes sense about doubling the vertical angular error. I will make that adjustment. Thanks. And I totally agree about not wanting to hold either...

4 years ago
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RE: My Least squares adjustment needs fixin'

So the error in my conventional doesn't change when I turn off all GPS observations. I'm also not using observations between held control points. I tu...

4 years ago
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RE: My Least squares adjustment needs fixin'

So I created a separate job using my local coordinates (same orthometric elevations though) and set it up in local vs UTM11. Low and behold, that was ...

4 years ago
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RE: My Least squares adjustment needs fixin'

@mark-mayer?ÿ My apologies, I wasn't near my computer at the time to grab?ÿ a screenshot of my settings. I use 2mm for centering errors. ?ÿ

4 years ago
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RE: My Least squares adjustment needs fixin'

Thanks for all the replies so far. The gps observations are all actually not affecting the conventional ties because they are not linked together yet...

4 years ago
Topic
Replies: 46
Views: 2859
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RE: Collecting & Processing Static data for DGPS

I really appreciate the time everyone has taken to write such detailed responses. So to summarize, do not use the vectors between and control points ...

4 years ago
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RE: Collecting & Processing Static data for DGPS

Good point, I forgot to mention we usually do that as the last step and use that data to hold our elevations.

4 years ago
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RE: Collecting & Processing Static data for DGPS

Does static collect a different kind of observation versus "RTK"? For example if I setup the rod and logged an hour long observation would that accura...

4 years ago
Topic
Replies: 26
Views: 3882
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RE: Chinese Prism Carrier

You're preaching to the choir but I have to do the best with what I have. ?ÿ We got sent brand new S7's and TSC7's but get knock off glass, hardware...

4 years ago
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RE: Chinese Prism Carrier

This job they've been on for the last 8 months is on the shore of the Pacific where it's rained or snowed every day except maybe 20. In that environme...

4 years ago
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RE: Chinese Prism Carrier

Thank you very much for the wisdom from experience. I will try this and update in a few months once they've been field tested.

4 years ago
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RE: Chinese Prism Carrier

@dms330 Agreed. ?ÿ But since I don't buy the equipment my options are to throw it out and be down 4 prisms, try to fix it, or try to convince the "p...

4 years ago
Topic
Replies: 9
Views: 927
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RE: Starting a Survey Company without being a PLS

Ok yea, by satellite office I meant a home office. ?ÿ

4 years ago
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RE: Starting a Survey Company without being a PLS

So basically open a satellite office? I had considered this as well.

4 years ago
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RE: Starting a Survey Company without being a PLS

Couldn't agree more. ?ÿ Can I ask what they were doing wrong to avoid any common pitfalls?

4 years ago
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RE: Starting a Survey Company without being a PLS

Im looking to work for myself with the guidance I still very much need when it comes to the rules and regulations of the legal side of surveying. Im m...

4 years ago
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