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shawn-billings
shawn-billings
@shawn-billings
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Joined: May 29, 2012 9:14 am
Last seen: July 23, 2026 8:33 am
Topics: 93 / Replies: 2598
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RE: Today's Example of Conventional Traverse With GPS

You know, I'd probably agree with you there samurai. My comfort tolerance would probably have been satisfied with one extra GNSS point in between thou...

12 years ago
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RE: Today's Example of Conventional Traverse With GPS

Such absolutes with such a subjective discussion. Your minimally constrained data would suggest that the job was "right" with only two GPS vectors. Yo...

12 years ago
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RE: OPUS Submissions Failing with "either very noisy or it was"

Hi Mark,I've also noticed that it is important, even though OPUS can eventually handle it, not to cross UTC midnight. Results take much longer it seem...

12 years ago
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RE: Today's Example of Conventional Traverse With GPS

Thank you for taking the time to generate that, Kent.We all deal with error budgets constrained by financial budgets. The professional is constantly t...

12 years ago
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RE: Today's Example of Conventional Traverse With GPS

I'd be curious to know what sort of results you would get using a minimally constrained adjustment of points 86 and 100 (or whichever extreme pair you...

12 years ago
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RE: Flashing strobe prism

Might not help, but if your gun has tracking lights, the prism will reflect the light directly back to the gun. Pretty handy for getting those late ni...

12 years ago
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RE: RTK Open Traverse - Best Practices?

We did quite a few route surveys when we first started using GPS. It was pretty frustrating trying to get conventional measurements to adjust with GPS...

12 years ago
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RE: Carlson SurvCE F2F - Drawing Buildings

Eric you are thinking of the RECT code that creates a fourth corner. CLO just closes a figure by drawing a line from the first point to the last.

12 years ago
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RE: Carlson SurvCE F2F - Drawing Buildings

The problem with JOG is running out of descriptor space> That is a quirk in SurvCE but F2F in the office draws it correctly. I wish they would fix...

12 years ago
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RE: Carlson SurvCE F2F - Drawing Buildings

The problem with JOG is running out of descriptor spaceAnother issue I have with JOG, although I do use it, is that when you get to the end of the JOG...

12 years ago
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RE: Grid to Ground Coordinates

Thanks for the kind words, Eddie. People taking the time to explain GNSS and geodesy on the old RPLS board was the genesis to much of the knowledge I ...

12 years ago
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RE: Grid to Ground Coordinates

GPS does not work in "Grid coordinates". This is a misconception. GPS works in ECEF (Earth Centered Earth Fixed). This is then projected onto an ellip...

12 years ago
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RE: How many channels do I need for my receivers

How many channels do I need for my receivers? A Boat-Load!Good stuff, Mark. That's truly amazing.

12 years ago
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RE: How many channels do I need for my receivers

> Well for me, the x90+(?) as a CORS network RTK unit is new to me The CHC x90+ is static only (according to their website) so no RTK, but the 24 c...

12 years ago
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RE: How many channels do I need for my receivers

I'm not in disagreement with you on that. Outside of firmware issues for little things (with big effects) like week rollovers and leap seconds, there ...

12 years ago
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RE: How many channels do I need for my receivers

Dogmatic much, CW?Each GPS satellite broadcasts as many as 5 signals presently: L1 (divided into C/A and P1), P2, L2C and L5. GLONASS presently has as...

12 years ago
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RE: I found it!!

OMG!with deep respect, Jerry, calling that luck is a dishonor to the son-of-bxxxx, a__hole of a party chief that must have led that crew. Someone was ...

12 years ago
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RE: Proper Punctuation for Lat/Long.

I've been using North Latitude of xx° and West Longitude of xx°, or abbreviate as N Lat xx° and W Long xx°.I have no idea if it's correct to any stand...

12 years ago
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RE: Loppers for Brushing

I'm on my second set. They are good loppers and are in some places more practical that machete. The 3x gearing makes a difference.

12 years ago
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RE: Earth's crust rising

Hey Greg,I've been reading about this method of determining snowpack. The concept makes sense, I just have a difficult time believing that the GNSS re...

12 years ago
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