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TIGER Database Historical Perspective

October 27, 2009 - By

In my last two columns, I’ve made several references to geospatial data. Jon Sperling, Ph.D. GISP, wrote in and commented on the omission of the importance of TIGER data in the history of geospatial data development and commercialization. He made reference to a document he wrote that was published in 1995 regarding the development and maintenance of the TIGER database.... read more

This is posted in GSS Monthly

TIGER Database Historical Perspective

October 27, 2009 - By

In my last two columns, I’ve made several references to geospatial data. Jon Sperling, Ph.D. GISP, wrote in and commented on the omission of the importance of TIGER data in the history of geospatial data development and commercialization. He made reference to a document he wrote that was published in 1995 regarding the development and maintenance of the TIGER database.... read more

This article is tagged with and posted in GSS Monthly

3D Visualization Software and…Introducing a New Contributing Author

October 24, 2009 - By

A couple of weeks ago, I dedicated a column to discussing the emergence of 3D geospatial data. This week, I was navigating around the U.S. Army Geospatial Center’s (AGC) website, which was formerly known as the Engineer Research and Development Center’s Topographic Engineering Center (TEC). As of October 1, 2009, AGC is operating as a Major Subordinate Command Center under the... read more

This article is tagged with and posted in GSS Monthly

GPS Constellation Management: Playing Not to Lose

October 22, 2009 - By

In sports, there is a phenomenon that sometimes occurs when a team is leading towards the end of a game. It’s called “playing not to lose.” The reason you are seeing high HDOP warnings from the NAVCEN and GPS “brownouts” during the day when RTK (GPS-only) isn’t working is because the GPS satellite constellation is sub-optimal. The current design of the GPS constellation is not focused on “playing to win”, but rather “playing not to lose.” read more

This article is tagged with , and posted in Opinions, Survey

Geospatial Data Accuracy – Better and Better

October 20, 2009 - By

Circa. 1995. I walked into the GIS office of a major forest products company in northern Arkansas (or was it northern Louisiana…not sure). At the time, I was a product manager for a GPS company and field testing one of our newer GPS mapping hand-held products. We decided to go out and map the perimeter of a timber tract they... read more

This article is tagged with and posted in GSS Monthly, Mapping

Intelligence on Demand (IOD)

October 13, 2009 - By

Oblique Imagery Online a Significant Game Changer for Federal Agencies By Art Kalinski, GISP A new technology service has just been initiated that may affect almost every federal employee who needs to view high resolution oblique imagery in the United States and key locations around the world. This service is a joint effort between Pictometry International and defense partners. First,... read more

This article is tagged with and posted in GeoIntelligence Insider, Opinions

“What Can GLONASS, GPS L2C, and GPS L5 Do for You?” Webinar Q&A Follow-up

October 6, 2009 - By

As I’ve been accustomed to doing, this newsletter addresses the questions you submitted during the Sept. 15 webinar entitled “What Can GLONASS, GPS L2C, and GPS L5 Do for You?”. There were some great questions during the webinar, and a lot of them. There were so many, in fact, that I’m going to break them up into a couple of different newsletter issues. Also, I need to update you on my trip to ION GNSS a couple of weeks ago. I might mix up the next newsletter with more Q&A as well as the ION GNSS update. read more

This article is tagged with , , , , and posted in Opinions, Survey

Innovation: It’s Not All Bad

October 1, 2009 - By

Understanding and Using GNSS Multipath
Telltale signs of multipath are the fluctuations in the signal-to-noise ratios (SNRs) reported by some GNSS receivers. In this month’s column, the authors look at how an analysis of SNR values can be used to map the multipath environment surrounding an antenna so that models of multipath can be constructed to further minimize its effect. Also, although an annoyance for most GNSS users, it turns out that multipath has its positive points. read more

This article is tagged with , , , and posted in Innovation, OEM