Network corrected real-time is a technological approach to high precision GPS/ GNSS positioning that has been theorized about, studied, experimented with, and implemented in various academic, scientific, and commercial forms for nearly a decade.
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Welcome to the second issue of The American Surveyor. Response to our Charter Issue has been tremendous, resulting in more letters to the editor than we have room for in this issue! Thanks to all of you who took the time to write. I especially appreciated the letter from John Keating, mentor and former employer, who gave me my start in surveying back in 1963. Check out the letters in the FeedBack column beginning on page 74.
A Note on Titles
Many years ago, in order to deal with all of the various abbreviations used by professional land surveyors--PS, RS, PLS, RLS, RPS, RPLS--the NCEES adopted the term LS to denote Licensed Surveyor. For simplicity's sake we use the same policy in The American Surveyor.
Oklahoma!
I am pleased to introduce Deral Paulk, City Surveyor of Lawton, Oklahoma, who is the subject of this issue's ProFile column. It was a pleasure to meet Deral and the guys and to travel back to my home state. Lawton adjoins Fort Sill, home of the US Army Field Artillery School, where I trained in the late 60s. (That's Yours Truly in the photo, back in 1968, and that big honkin' instrument next to me was an early-day EDM--a Tellurometer, I think, which used microwaves.) Of course the military, with its unique naming conventions, referred to the instrument as a Distance Measuring, Electronic device (DME) instead of an EDM. The instrument weighed a ton, and because it was an early device the meters had to be properly nulled (lest you get a wrong answer), but it had builtin radio communication and was capable of providing very long distances.
I always admired the system we used back in those pre-computer days, full of checks and balances. Each crew had two computors (people), and we worked with log tables and forms. Each computor worked independently, and if our answers disagreed, we started over. Of course, it was always a race to see who could finish first, all the while knowing that if in your haste you made a mistake and came up wrong when the problem was recalculated, you bought the beer. Taping was handled the same way: doubletaped distances, and if they didn't agree within tolerance, we did them again. In spite of the military's tedious approach, it was very logical and ensured success. The work we did now seems primitive, but at the time, a T-2 with tight angleturning specs and double-taped distances was as good as it got for Third-Order work. After leaving Fort Sill I never again saw a DME or the cool azimuth gyro on which we also trained.
New Series Begins
This issue marks the inauguration of a news series in The American Surveyor. Within the metes and bounds and the Public Land Survey System (P LS S) that exist in the US, there are wrinkles in what I call the marvelous "fabric of surveying" in America. The system set up by Thomas Jefferson is without parallel on our planet, and is held up as an example of logical planning. But the GLO had to accommodate people who were already living in many of the areas when the surveyors came through. Louisiana, for example, has a French influence, and as the GLO worked its way across the state it had to deal with the bona fide rights of existing land owners. Because of the curious river lots that ran radial to the rivers and bayous, some of the GLO plats contain hundreds of lots. Other states, like Texas, New Mexico, Arizona and California, were affected by Spanish or Mexican land grants. Our first installment has been written by Louisiana surveyor Tony Cavell. Tony's article provides a colorful and fascinating glimpse into the "French accent" that flavors Louisiana surveys.
The State of Surveying
A recent issue of Surveying and Land Information Science contained an article written by James Elithorp, the head of the surveying program at Troy State in Alabama. Elithorp writes ab out the student recruitment prog ram at Troy State and examines the reasons behind the struggles so many deg ree programs are having in this country. Family, working for a surveying and mapping firm, and going to school at Troy State are the three most important reasons students listed as to why they picked geomatics at Troy State.
What also caught my eye were the questions posed to existing surveyors as to why they chose the profession in the first place. Number one on the list was working outdoors, followed by the potential for business ownership, and then meeting the needs of society. The lowest-ranked answer? "Work pays well." Also included was a choice for Other, populated by reasons such as enjoyment of surveying, challenging and interesting work, satisfying nature of boundary retracement, and use of high technology. Ranking equally low in the Other category was "math," and "high demand for surveyors."
A recent NCEES spreadsheet showed that there are around 47,000 licensed surveyors in the U.S. While that sounds like a reasonable number when spread out over 50 states, what is most alarming is that most of those licensed surveyors are between the ages of 40 and 60. There are not enough new licensees currently in line to replenish the supply of licensed surveyors. It is reasonable to assume that fewer surveyors will mean that the prices for their services will go up, but the remaining surveyors should have plenty of work.
Added to this is GIS, which, when coupled with a fantastic technology-- GPS--will eventually allow anyone to repeatedly establish a position within the size of a quarter. Will this diminish the need to call a surveyor when boundary issues arise? As we know, the requirement for listing State Plane Coordinates on subdivision plats is relatively recent, so only the newer subdivisions will ever be affected by John Q doing his own surveying. And as Joel Leininger pointed out years ago, GIS will never eliminate property rights, nor will it eliminate the propensity of neighbors to fight over their common boundaries. Looking just "across the pond," it is somewhat sobering to think that England basically has one guy who handles the majority of the boundary disputes in that country (approximately 600 per year). Some feel that machine control poses another threat, but when examined carefully, only threatens the need to pound stakes into the ground. As with most complex technologies, surveyors will still be needed to ensure that the dozers are working in the right spot on a construction site.
Surveyors have been buffeted by the winds of technology, enabling us to do more work with less people. But technology also enables us to produce higher-quality products in less time, and therein lie the seeds of success for the modern surveyor. I'll never forget the first time we used CAD and a color plotter to colorcode the easements on an ALTA survey. The attorneys were ecstatic b ecause they had never seen this done, and because they are a group that closely examines our work product. Imagine the time spent by the attorneys tracing every easement line with their fingers, or even color-coding the easements on their own. The simple addition of color-coding on our part vastly increased their comfort level with the map. My point? As we all know, a happy client often returns for future work.
I know there are also horror stories out there about the use of CAD to completely draw maps when hand drafting would have been simpler and faster. But as we move farther and farther into the digital age, it will be difficult to withstand the demand for 100 percent digital output.
These issues and more will be addressed in The American Surveyor. Stay tuned!
Marc Cheves is editor of the magazine.
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Editorial: Setting Our Sights
Years of planning and construction went into Beijing's iconic bird's nest stadium that is now synonymous with 2008 games. With Vancouver slated to host the Winter Games in 2010, surveyors have been hard at work helping to ready the infrastructure. Diversifying: For those of you looking for .... Read the Article
Point to Point: Boundaries by Acquiescence
We retracement surveyors, for the most part, labor within a stable and consistent part of the law. By this, I mean that from place to place, and over time, there is little variation in the doctrines defining correct practice. Monuments, everywhere, trump courses and distances, in the event of .... Read the Article
WowFactor: The Trimble VX Spatial Station
It's not unusual to find a digital camera as standard equipment for a survey crew. Providing photos of monuments, project sites and other evidence is a routine part of the surveyor's work. Nowinstead of a flat drawing and some simple snapshotsimagine giving your client a 3D walkthrough tour of ... Read the Article
Vancouver Trains For Olympic Games
More than one million athletes, judges, volunteers and visitors are expected to converge on Vancouver, Canada, and surrounding areas during the 2010 Olympics. Yet many of these visitors won't realize the Olympic-sized engineering and ... Read the Article
Tips & Tricks: Getting More from Your Handheld GPS Unit
Are you getting all that you can from your handheld unit? Are you able to directly observe State Plane coordinates with your handheld? Although inexpensive units may not have a selection for the State Plane coordinate grid that you use in your state, if your State Plane Coordinate Zone uses the .... Read the Article
Survey Reports: Preparing a Survey Report—Part 5
This is the fifth and last article in a series of articles suggesting formats and contents of a survey report. Previous articles dealt with opinions on the location of corners and boundaries [Feb. 2008]; encroachments, gaps and overlaps [Mar. 2008]; limitations of the surveying services [June 2008]; and.... Read the Article
RTN101: Monitoring with RTN (Part 15)
Monitoring is essentially tracking movement over time and is often part of a surveyor's regular line of business. Such tasks are known by many names: subsidence monitoring, deflection monitoring, deformation monitoring, structural integrity monitoring, compliance monitoring, and ... Read the Article
Product Review: Spectra Precision FOCUS 10
The Spectra Precision's FOCUS 10 brings back a lot of memories from an instrument I reviewed several years ago. Without a doubt, the FOCUS 10 has benefited from the former, but is updated and less expensive even in terms of 2002 dollars. And that's a good thing, since ... Read the Article
ProFile: Marshall Robinson
We allow little time in our day-to-day schedules to get to know people much beyond their shells. It was therefore a pleasant change of pace when I received a phone call awhile back from Marshall Robinson, who was calling to order a map from our website ... Read the Article
Vantage Point: Tough Times
The construction slowdown has hit different parts of the country with varying ferocity. The latest jolt to "life as we know it" is a uniform blow to businesses of all sorts, and has the potential to change the financial plans of a number of surveying firms. Within a week, three U.S. motor vehicle ... Read the Article
Surveyors Report: Mimi the Elephant
Years ago I worked for a medium-sized private engineering firm in Denver. We negotiated a continuing services contract with the City and County of Denver for surveying services, and my crew was elected to conduct this work. The City was understaffed by one crew for ... Read the Article
• 15th Annual GeoTech - October 7-8, 2008, NOAA’s Auditorium and Science Center in Silver Spring, MD. Hosted by Potomac Region of the American Society of Photogrammetry and Remote Sensing and co-hosted by the NGS, 1 day of Workshops taught by experts, and 1 day of Technical sessions.,
• GITA's First Annual GIS for Oil & Gas Conference - Calgary - Nov. 6-7, 2008, Calgary Marriott Hotel, Calgary, Alberta, Canada. The GIS for Oil & Gas Calgary Conference will build on the momentum from GITA’s GIS for Oil & Gas Conference held in Houston, Texas, every September.
• GITA's “How to Financially Justify Your Geospatial Projects” Two-day Workshop - Nov. 13-14, 2008 in Denver, Dec. 11-12, 2008 in Tampa. All types of organizations now have a unique opportunity to learn from GITA’s landmark research project, “Building a Business Case for Geospatial Information Technology: A Practitioner’s Guide to Financial and Strategic Analysis.”
• Geography in Las Vegas - March 22–27, 2009. Join 8,000 geographers, GIS specialists, and environmental scientists from around the world in Las Vegas for the very latest in research, policy, and applications in geography, sustainability, and GIScience, during the annual conference of the Association of American Geographers.
• California Land Surveyors Association 2009 Conference - March 28-April 1, 2009, Hilton San Diego Resort (Mission Bay).
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, (707) 578-6016.
• SPAR 2009 - March 30- April 1, 2009, Hyatt Regency Hotel, Denver, Colorado. SPAR 2009 will focus on best practices for using 3D imaging technologies to design and deliver capital projects as well as operate, modify and maintain production, manufacturing and infrastructure assets.
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