Survey

Webinar Brief – A Closer Look at L5: The Future of High-Precision GNSS

March 18, 2011By

Yesterday I conducted a webinar titled "A Closer Look at L5: The Future of High-Precision GNSS." Preparing for it was quite interesting, so I thought I'd share some of the slides I produced (and had produced) for the webinar. I think you'll find them interesting. read more

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I’m Buying A New RTK Receiver. What Should I get?

March 15, 2011By

In light of this weeks webinar, A Closer Look at L5: The Future of High-Precision GNSS, and spurred by an email from a reader about how to sift through all the GPS/GNSS receiver choices, following are my thoughts if you're looking to purchase an RTK receiver today. read more

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LightSquared Saga, and Recent Solar Activity

March 2, 2011By

This week I'm following up on my article from a couple of weeks ago about the potential effects of LightSquared's plans. As a user of high-precision GPS receivers (particularly GPS L1 sub-meter, but also dual-frequency), you should be particularly concerned about this issue. I'll tell you why. Also, I have a note on recent the solar activity. read more

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Iraq on the Map: Installing Reference Stations for Accurate Engineering

March 1, 2011By
Edge-IGRS-plan-map

As a geodetic surveyor, I served in the U.S Army for 10 years. During that time, my team and I developed a nationwide GPS infrastructure system called the Iraqi Geospatial Reference System (IGRS). We installed Continuously Operating Reference Stations (CORS) and High Accuracy Reference Network Stations (HARNS), the first Iraqi owned and maintained system of its type. read more

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Webinar Follow-up Q&A: SBAS, DGPS or Post-processing? Which Should You Use?

January 31, 2011By

Last week, I conducted a webinar along with Dr. Michael Whitehead titled "SBAS, DGPS or Post-processing? Which Should You Use?" It was one of the best webinars I've conducted to date. We barely squeezed it into 65 minutes and could have kept going for the better part of two hours, given the subject matter to cover and the number of questions we received before and during the webinar. read more

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2011: The Year for Galileo

January 18, 2011By

Back in December 2006, I wrote about the momentum of Galileo (Europe's planned satellite navigation system) in an article discussing GNSS trends. It's been discussed off and on for well over a decade. It was a hot topic for a number of years. In fact, back around 2001, the U.S. really didn't want the European Union to embark on the project. read more

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To Post-Process or Not to Post-Process, that Is the Question

January 5, 2011By

If you’ve been around GPS mapping for any length of time, I’m sure you’ve heard of post-processing, and you may have even experienced it yourself. If you used GPS for mapping in the '90s, you almost certainly post-processed your data. In fact, sometimes you had to pay for access to GPS base-station data for post-processing. That’s hard to imagine given the widespread, worldwide availability of GPS base-station data on the web today. read more

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On the Edge: Five Big Ones in Ten

January 1, 2011By

Look back with me at the five 2010 GNSS events that most affected surveying, mapping, engineering, construction, and natural resource users. Each one had, or could have had, a significant effect on you and your work. read more

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