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. Many of the various approaches share the fruits of past research, algorithms, and technological tools; some which are in common.
Click Here to begin the series,
or view the Article PDF's Here
2006 Original Corner Recovery
The year was 1847 and dew was running in intermittent rivulets down the canvas lean-to. The men ate their breakfast of sourdough biscuits, served with a generous portion of salted pork and what was left of the bluegill dinner from the previous evening and washed down with camp coffee. Deputy surveyor John Burt was getting the crew ready for... Read the Article
$250 Fine or Imprisonment for Disturbing This Mark
Eight words that have long been associated with land surveying, "$250 Fine or Imprisonment for Disturbing This Mark" were intended as a serious warning to anyone who considered tampering with one of our valued survey monuments. The imprinted wording that appeared on many monuments not only... Read the Article
Woodward's Ice Bar
In the modern era of getting fast measurements with GPS, probably few surveyors today realize the painstaking efforts made by the United States Coast & Geodetic Survey (C&GS) to measure their triangulation baselines in the late 1800s.... Read the Article
Message in a Bottle
When thinking of past scientific measuring instruments developed by the United States Coast & Geodetic Survey (C&GS) over the past two centuries, a message in a bottle probably doesn't come to mind. For most people, the allure of placing a message in a bottle and sending it adrift to an unknown... Read the Article
NGS Celebrates 200th Anniversary
Two hundred years ago an Act of Congress, approved February 10, 1807, authorized a survey of the coast of the United States. This action, immediately following the successful return of Meriwether Lewis and William Clark's exploration of our western frontier, gave President Thomas Jefferson yet another reason to feel confident... Read the Article
Compleatly Surveying at Mount Vernon
On a recent fall weekend, a cluster of land surveyors gathered at the long time residence of the father of our country and one of the fathers of American surveying. On October 27, 2006, a dedication ceremony was held at Mount Vernon, Virginia sponsored by the Mount Vernon Ladies Association, the conservators and... Read the Article
The Art of Colonial Surveying Instruments
When I first laid my eyes on the Lewis Michael compass illustrated here, words could not describe the emotions I felt. I was looking at one of the most beautifully engraved examples of the 18th-century colonial instrument maker's art. I have been collecting colonial antiques for decades and had never seen an example... Read the Article
Perhaps the Most Incorrect of Any Land Line
In the April 2006 issue of the Southwestern Historical Quarterly appeared an article by Ralph H. Brock entitled "Perhaps the Most Incorrect of Any Land Line in the United States" Establishing the Texas-New Mexico Boundary Along the 103rd Meridian." In a meticulously researched and well-written article... Read the Article
Rocky Mountain High - Finding the Western end of the 6th PM Base Line
Finding a small chiseled cross established 147 years ago and 21 miles deep into Colorado's Front Range of the Rocky Mountains would be the ultimate challenge. That challenge was met by seven determined men after six months of research, planning... Read the Article
State Surveys of the Great Depression
The Great Depression of the 1930s, largely triggered by the stock market crash of 1929, affected virtually every occupation including land surveying and civil engineering. Engineering companies that thrived in the roaring 1920s found themselves searching for any work. By the fall of 1933, the Federal Emergency Relief... Read the Article
The American Surveyor in Photographs {The First Fifty Years 1840-1890}
In museum archives and private collections across the country, and still hidden away in old trunks and boxes in the attic, there are visual treasures waiting to be discovered. These treasures are the old photographs that provide a direct window to the past... Read the Article
Court Ordered Corners
The original monuments established by the deputy surveyors under contracts from the Government Land Office have always been intended to be fixed in position where they had been placed and deemed unchangeable. "That the original township, section, and quarter-section corners established by the government surveyors must stand as the true corners which ..." Read the Article
• 2008 ESRI Survey & Engineering GIS Summit - August 2-5, San Diego, California. Join more than 400 surveyors and engineers in exploring the possibilities of GIS technology. See how GIS software integrates with surveying and engineering tools to provide more complete business solutions and field processes.
Reach our audience of Professional land surveyors and Geo-Technology professionals with your career ad. Feel free to contact us if you need additional information.
History 
Sign up and check out the archives 
