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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: Trimble R10 as NTrip caster

Are you planning to use it as a mobile base with corrections sent over cell?My knowledge is more related to Javad's equipment but I believe that regar...

12 years ago
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RE: Is This Light-Squared Pushback?

I don't think it has anything to do with that at all. According to Javad:Javad GPS World Interview GPS/GLONASS Dispute

12 years ago
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RE: Is This Light-Squared Pushback?

Do Russia & Europe Need A US License To Transmit GNSS?could be. sounds like BS to me though. the FCC doesn't certify receiving devices that I'm aw...

12 years ago
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RE: Drawing on the Vertical Plane

not terribly elegant, but I draw on the xy plane and then use 3D align to align it to the vertical surface I'm wanting to attach it to. These other re...

12 years ago
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RE: Advantages of dual frequency GPS over single frequency

Also, dual frequency receivers have become ridiculously inexpensive in the past couple of years.

12 years ago
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RE: Advantages of dual frequency GPS over single frequency

OPUS.Within the limits of L1 range, there is no accuracy improvement.

12 years ago
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RE: GPS Precision

Localizations are no substitute for following rules of dignity of calls. Localizations can be very effective for relating a GPS survey to an existing ...

12 years ago
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RE: GPS Precision

Localization success depends on the accuracy of the point coordinates, the accuracy of the GPS ties to those points and the geometry of those points. ...

12 years ago
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RE: This is why your 5" total station sucks!

Why do you suppose there are four periods in th graph?

12 years ago
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RE: This is why your 5" total station sucks!

What you've done iswhat I've understood goes into higher order instruments with identical construction. Or at least similar to it. Beautiful work.

12 years ago
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RE: Management can sometimes feel like Kindergarten

that's cool, Andy. I understand that and I'm probably projecting my own experiences and observations on your circumstance and that's probably not enti...

12 years ago
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RE: Management can sometimes feel like Kindergarten

That's a f@^#*d up business model that is commonly used today - a person of responsible charge does not have the power to hire and fire as they see fi...

12 years ago
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RE: OPUS-RS won't accept ZIP enclosed files, as of Thursday AM

I know you've probably looked at this from all angles, Mark. Did you try older successfully submitted zipped files, or only recent files?

12 years ago
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12 years ago
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RE: Sun shots

I tested the eTrex receiver I used against WWV to determine what time it was displaying. It matched UTC very well (as close as I could watch the LCD t...

12 years ago
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RE: Sun shots

Hour angle. I get time from a consumer grade GPS receiver. I estimate that I get time to less than a second. It's easy enough to tell what effect this...

12 years ago
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RE: Sun shots

I think celestial observations offer a fantastic geodetic primer. Sure you could learn to push buttons on a GNSS controller, but I'd much rather a stu...

12 years ago
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RE: How does a robotic TS determine direction?

the CMOS or CCD would need to be of enough pixel count to support the angular precision of the instrument but doesn't necessarily determine the angula...

12 years ago
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RE: How does a robotic TS determine direction?

Exactly. This is also how the manufacturers have improved searching to ignore reflected signals that aren't prisms. The shape of the "image" of the re...

12 years ago
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