Defense PNT Newsletter

Trends in GPS/PNT User Equipment

May 15, 2013By
DJ-opener

“A Guide to Trends in GPS/PNT User Equipment” Presentation to the 11th Meeting of the PNT Advisory Board The following is an abbreviated transcript of Don Jewell’s briefing to the PNT Advisory Board at its meeting on Tuesday, May 7. The slides from Jewell’s briefing and the other briefings to the board are available at pnt.gov under the heading 11th... read more

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The 29th Annual National Space Symposium: Better Every Year

April 10, 2013By
NSS-logo

Neither rain, sleet, snow, hail, wind, nor dark of night will deter… Loosely Translated, Herodotus, Histories (8.98) …attendees at the 29th National Space Symposium from their appointed rounds. Seriously, folks, with apologies to postal workers everywhere, here in the Rocky Mountains it was 72 degrees on the eighth of April, the first day of the largest space symposium in the... read more

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When Am I?: The Importance of Time in Navigation

March 12, 2013By

A few months ago, many of you may remember that I wrote about an encounter with a rather well-known female journalist who, after listening to one of my GPS presentations, said something like this, “I came here today to learn more about GPS and so far all you have talked about is atomic reference systems…what the heck do those *&@#... read more

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BYO What?

February 26, 2013By

Every time I see a headline or read an article concerning BYOD (Bring Your Own Device) from a government source, where that source details only the risk associated with BYOD, especially where GPS/PNT (position, navigation and timing) is concerned, I am incredulous. Consider these recent BYOD headlines: BYOD – Disaster Waiting for Government Networks BYOD – Bring Your Own Disaster... read more

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2C or not 2C: An Important Signal Question

January 9, 2013By

With apologies to the Bard of Avon, as I paraphrase his prose, 2C or not 2C — that is the question for millions of GPS users and has been for several years. Indeed, over the past seven years hardly a week has gone by without an email or inquiry about the status of the GPS L2C signal. The name “L2C”... read more

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PHGPST Resurrected: Seeking the Perfect Device

December 11, 2012By

By Don Jewell Cards and Letters It happens every year and it is an emotional rollercoaster.  It generally starts a couple of weeks before Thanksgiving and continues until just after New Years – and it is simply heartbreaking. The letters and emails start arriving just like clockwork before the holidays and they all ask the same question – where can... read more

Conversation with Ray Kolibaba on the GPS Ground Control Segment

November 20, 2012By
Kolibaba-W_650

Ray Kolibaba, Raytheon VP and Program Manager for OCX, took part in a candid conversation with Don Jewell, our defense editor at GPS World. Kolibaba gives us an unprecedented look at the GPS ground control segment, warts and all, as it exists today. His updates about a viable program are good news because at one time the OCX program was... read more

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ION, LightSquared, and GPS IIF-3

October 10, 2012By
Stained-glass

By Don Jewell It had to happen sometime. I just thought or hoped it might take a few more years. But I guess I should not be surprised since I experienced a wonderful 30-year U.S. Air Force (USAF) career and that has been over for more than a decade. I have been working GPS issues since 1978. So I guess... read more

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