Survey Scene

Q&A from L5 and LightSquared Webinars

May 5, 2011By

In late March, I conducted a webinar titled "A Closer Look at L5: The Future of High-Precision GNSS," in which I discussed the impact that the new GPS L5 signal/frequency may have on high-precision users. Then, in April I was part of a discussion panel-format webinar titled "LightSquared: Our Story So Far." Many questions and comments arose from both webinars, and I'll attempt to address those in this column. read more

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GPS Surveying/Mapping Current Events

April 6, 2011By

The first few months of 2011 have been ripe with technical challenges (LightSquared), technical innovations (Galileo/Compass), and business activity (who is Trimble buying next?). read more

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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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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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