RTN expert Gavin Schrock provides everything you need to know about network-corrected real-time GNSS observations.
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Meet the Authors
Check out our fine lineup of writers. Each an expert in his or her field.
ProFile:
A Visit with S.J. Martenet in Baltimore By Marc S. Cheves, LS 1,561kb
Dividing the Needle Ring of a Colonial Compass
A fascinating look at how instrument makers divided the needle rings of manufactured compasses prior to the Ramsden-inspired dividing engine.. By Jeffrey Lock 1,288kb
Surveyin’ Da Situation: Handing Down Traditions
Though passed along without written instructions, the best traditions are engraved on the heart. By John D. Matonich, LS 407kb
Berntsen: A Marked Difference
It’s no secret why the world’s largest producer of durable boundary markers works like a well-oiled machine. By Angus W. Stocking, LS 1,143kb
When a Subdivision Map Isn’t a Subdivision Map
Where is the balance between the rights of landowners and the power of government to regulate for the public good? By Lloyd Pilchen, LS, Esq. 387kb
Washington View: Decreasing USF Disbursements Harm Small Rural Businesses?
Insight as to how a ruling on Universal Service Fund allocations could affect surveyors. By James J. Demma, LS, Esq. 72kb
Geodetic Connections: Geodetic Leveling
Horizontal positioning is not all that has changed over the last thirty years. By Dan Martin 783kb
GIS Matters:
Data Modeling of Survey Data in GIS
The concept of a data model should not be confused with the data format. By Rj Zimmer, LS 364kb
Vantage Point:The Big Picture by Taylor Morrison
As developer advocates, sometimes we must look beyond the wishes of our clients.. By Wendy Lathrop, LS 817kb
Bookmarks: William Henry Holmes and the Rediscovery of the American West, by Kevin J. Fernlund
His eye-witness reports and detailed images fueled America’s fascination with the unmapped frontier
By Pat Toscano, LS 295kb
Editorial: CGSIC in Savannah
The 48th meeting of the Civil GPS Service Interface Committee (CGSIC) was held September 15-16, 2008 in Savannah, Georgia. Of particular note was the announcement that NDGPS will continue. Funding is still a challenge, but the powers that be have decided that NDGPS, like GPS, is .... Read the Article
Point to Point: Relatively Speaking
Sooner or later it happens: one of your friends or relatives asks you to survey their property, or otherwise act professionally on their behalf. Is that all right or do we have a higher obligation to the public concerning impartiality? Although I have not conducted an exhaustive examination of the .... Read the Article
More Than a Simulation
When work such as land surveying requires precision and gets impacted by changing technology, it makes sense to be introduced to high-tech equipment on an actual project rather than on a simulation exercise or in a classroom setting. That runs counter to ... Read the Article
Optech Incorporated: The Lidar Company
In the early 70s, Dr. Allan Carswell, a physics professor at York University in Toronto, developed a pulsed laser system used in the world's first lidar bathymetric mapping system. Based on his research, Carswell founded Optech Incorporated in ... Read the Article
The Wow Factor: SmartWorx from Leica Geosystems
Every version of Leica Geosystems software contains user requested features. The latest product request that made the final cut was a "Field to Office" application. This full-featured FTP and transfer software is now built into the operating system of all System 1200 sensors, making it possible for .... Read the Article
Visualizing N G S Control Stations in Google Earth
Google Earth is rapidly becoming the land surveyor's tool-of-choice for preliminary job site reconnaissance and survey planning (see "Topography is Dead," by Joel Leininger, March 2007). Survey projects often begin with the investigation and .... Read the Article
Surv-Fi, Part 2: Boomer's Hearing
Stand back from the cradle Hector!" Vel warned her colleague. "You could receive a rather nasty static shock as it spins up!" Hector Fontecilla stood shivering in the still Chilean Patagonia morning awaiting instructions from Vel Kawashima. Ten thousand ... Read the Article
Tips & Tricks: Hidden Point Offset
Let's say it's 5:30 Friday afternoon and you're past ready to call it a week. You've just calculated the angle and distance to look for one of the last monuments you need to tie in. You turn the instrument to the angle and shoot a distance that measures just behind a tall tree. After a few minutes' search ... Read the Article
FeedBack
Wendy, quite possibly the best article ever written in a surveyor's journal ["If Not Now, When? Sept. 2008]. It matters not how technically proficient we are, how much money we make or how well "esteemed" we seem to be in our profession when we face serious illness or death. What do our friends and ... Read the Article
Vantage Point: Diversions in the Park
There is not a lot of unused land in our urban and increasingly suburban areas. It disappears under shopping centers and houses and roadways at a rate unimaginable a century ago. So it may not be unusual to start eyeing land that was set aside for parks and open space at ... Read the Article
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