Establishing Orthometric Heights Using GNSS — Part 1
June 3, 2015
Editor’s Note: This month, we introduce a column by David B. Zilkoski, one of our two new Survey […]
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Editor’s Note: This month, we introduce a column by David B. Zilkoski, one of our two new Survey […]
The world of sharing positional information is filled with scenarios like “I got a cm and you got a cm, but our centimeters differ by a meter.” If our modern positioning systems are so capable, then virtually all positional data integration should be a snap. Unfortunately, that is often just not so. The failure in many cases is a lack of knowledge on the part of many GNSS users of basic principles of geodesy and geodetic surveying guidelines and providing complete metadata.
Surveyors, prepare to get your feet wet. Global warming is about to hit you in the job list. By 2050, a majority of U.S. coastal areas are likely to be threatened by 30 or more days of flooding each year. This according to a December report in Earth’s Future, a journal of the American Geophysical Union.
You may have heard about “NMEA data” with respect to GPS. NMEA existed well before GPS was invented, and today is a standard supported by all GPS manufacturers. NMEA gives equipment users the ability to mix and match hardware and software.
A little more than a year ago, Swift Navigation started a Kickstarter campaign for a $995 RTK GNSS […]
With more than 4,000 attendees, this year’s Trimble Dimensions User Conference was the largest ever and, I must say, […]
In September, I attended the Institute of Navigation (ION) GNSS+ conference in Tampa, Florida. The ION GNSS+ conference […]
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