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Christine Grahl is the editor of POB magazine. She can be reached at pobeditor@bnpmedia.com.

Sight Lines: Adventures in Geodesy

January 27, 2010
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Technology is rapidly changing the way surveyors collect and disseminate data. What will the surveyor’s role look like if the next generation of receivers allows high levels of real-time accuracy without ground control?



A few weeks ago, I had the privilege of attending a seminar on State Plane Coordinates and Datum Transformations in Novi, Mich., hosted by Ferris State University’s Burt and Mullet student chapter of ACSM. The presenter was David Doyle, chief geodetic surveyor for the NGS, and he offered a fascinating glimpse of the future.

He pointed out that technology has made it possible for an increasing number of people to use positioning data in unconventional ways. By the year 2020, as many as 120 satellites could be available for positioning if China, Russia and the European Union follow through with their planned launches. What’s more, triple-frequency receivers will likely be able to achieve 30 to 50 centimeters or better real-time accuracy without ground control, and accuracy down to 10 centimeters may even be possible. What will the surveyor’s role look like when this happens?

I can already hear some readers saying that their role will simply disappear. After all, technology advances almost always cause a certain number of job casualties. Doyle pointed out that 100 years ago, it might have taken 20 people three weeks to measure a baseline, so GPS technology has already taken a substantial toll from that perspective. But that’s the backwards view. The forward-thinking view envisions all of the possibilities.

According to Doyle, it’s crucial that today’s surveyors gain a solid understanding of the reference frame. “Within our own community, we have a simple lack of education about the reference standards,” Doyle said. “Yet we as surveyors are the spatial data professionals. If we don’t get it right, none of us can expect anyone else to get it right.”

Based on this line of thought, a good understanding of the reference frame and the value of data should enable today’s professionals to pursue new opportunities as the future unfolds.


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What do you think? What will the surveyor’s role will look like in 10 years? What opportunities do you see emerging in this new paradigm? Please share your comments below.
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Adventures in Geodesy

Dick Lawrence
January 27, 2010
Since the advent of electronics into the survey industry, we have been evolving the tools of our trade. Measurement has gotten easier and faster and the mechanics have been taught to more and more folks every day. But bearing in mind that what we're speaking of here is data that then has to be intelligently analyzed and then used to form the basis of what we used to call "surveying". So, the methods will constantly evolve, but the process of surveying, of producing a "product" that a licensed individual is willing to sign/seal and be forever responsible for may never change.

Adventures in Geodesy

James Couts, PLS, CFedS
January 27, 2010
The access of more precise GPS equipment to the layperson is ever increasing. I know we all cringe when a client sends us coordinates they captured with their handheld device, but in reality this is a good thing. Technology has made us better at what we do. The problem isn't new technology replacing crewmembers: that happens in all fields. The problem is when we aren't proactive in preserving our roles as licensed individuals. We need to stay ahead of the technology wave and ensure that our state legislature and licensing boards are well aware of the need to have any surveying activity overseen by a licensed individual. If we are not able to do that, then yes we may slowly become "irrelevant" as a profession, at least in the public's eye. Ultimately it is up to us to make sure they know how important we really are, and that John Q. Peabody being able to locate his deed corners to the nearest 10 cm doesn't do much without the proper professional interpretation.

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