AI Assistant
Notifications
Clear all
shawn-billings
shawn-billings
@shawn-billings
Member
Joined: May 29, 2012 9:14 am
Last seen: March 14, 2025 3:27 pm
Topics: 93 / Replies: 2598
Reply
RE: Getting started with Least Squares

Paul in PA, post: 339455, member: 236 wrote: Least Squares Adjustment does not make observations better, but it does make them different. I disagree...

11 years ago
Reply
RE: Texas General Land Office website is FUBAR

I agree. Looks like crap. I had a heck of a time finding archives a few days ago. It was not hard to find out who the commissioner was with the huge p...

11 years ago
Reply
RE: Getting started with Least Squares

Not entirely necessary but I would recommend keeping instrument and rod heights even if I am not really interested in elevations.

11 years ago
Reply
RE: Adverse Posession, Texas Style

This will be interesting to watch. I have no idea who is right. I can believe either side at this moment.

11 years ago
Reply
RE: NAD 83???

Mighty Moe makes a great point. One thing I've found with sub-meter receivers in the past is that the errors typically stay consistent for hours. If y...

11 years ago
Reply
RE: ALTA without a Title Commitment?

In the days of the so-called "long form certification" (the chain letter of survey certifications, where every lawyer and banker in the country added ...

11 years ago
Reply
RE: NAD 83???

As Mark said. ITRF vs NAD83. 2m shift 3D. In my area it's about 2' N 2.5' E and 4' Up.

11 years ago
Reply
RE: ALTA without a Title Commitment?

Agree with others. Can't be an ALTA ACSM Land Title Survey without the title commitment.

11 years ago
Reply
RE: Photogrammetry with RTK

George,I don't have a full handle on accuracy. It's dependent on baseline length, so those values would have to be qualified with a distance. I did tw...

11 years ago
Reply
RE: Paden's Ongoing Resistance to Title Companies and Their Wholesale Insanity

We were just talking about this. Dad told me about title attorneys that would push surveyors around 30 years ago when he started in business. They wou...

11 years ago
Reply
RE: Intellicad disapointment

Why would that even be a desirable feature?

11 years ago
Reply
RE: RTK work - normal practice...

Gavin, you'll have to help me out. I'm not sure what mess you'll be putting to rest. Will you be demonstrating the >1Hz transmit improves TTF? Will...

11 years ago
Reply
RE: Photogrammetry with RTK

George Matica, post: 337633, member: 6663 wrote: Javad's Triumph LS website states, "Offset Survey with PhotogrammetryOffsets can be calculated using ...

11 years ago
Reply
RE: Nate's Suggestions for choosing a RTK BASE Site.

Agree with Lee. Any challenges at the rover will affect the position at the rover for that one shot. Any challenges at the base will affect every shot...

11 years ago
Reply
RE: RTK work - normal practice...

I'd be surprised if anyone is getting 5hz transmit over uhf. The only hard stance I've seen being made on this issue is that >1hz transmit improves...

11 years ago
Reply
RE: Find 7 Parameters and transform a drawing in Carslon Survey

I should clarify No. 4. Actually it isn't a least squares of the angular residuals (in angular units), it is a least squares solution of the arc dista...

11 years ago
Reply
RE: Find 7 Parameters and transform a drawing in Carslon Survey

Helmert transformations are based on the Euclidean grid system of the coordinates being used. A seven parameter system can be ECEF, but only if the so...

11 years ago
Reply
RE: Photogrammetry with RTK

Nate The Surveyor, post: 337361, member: 291 wrote: IS this Distance Distance intersection, with RTK GPS? That's what it looks like to me. Only a 3.1 ...

11 years ago
Reply
RE: Photogrammetry with RTK

Bob LeMoine, post: 337356, member: 10375 wrote: Cool Stuff Shawn, Bleeding Edge of Technology... Some days you're the hammer, some days you're the n...

11 years ago
Page 59 / 135