Defense PNT Newsletter

Letters to the Editor

October 1, 2013By
Constellation snapshot for a specific date/time: GPS week 1749 (725) and GPS seconds 86400 = July 15, 2013, at midnight GPS Time.

Orbital Planes, Nightmares, Pioneers Good morning, Dr. Langley, I have a seven-year-old drawing of GPS satellites in their orbital planes that I found (can’t recall where) some years ago, either on a website or from a colleague who attended some GPS forum. Would you know of a site where I can find current information on GPS satellite locations, which ones... read more

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When All Else Fails: Read the Manual, It May Save Your Life

September 10, 2013By
Audi-dash-GPS

It was a dark and stormy night. The winds gusting to over 70 miles per hour drove the snow horizontally, straight into Lynn’s headlights, making it almost impossible to see the road. The outside temperature was -20 degrees Fahrenheit and the roads were treacherous. Lynn wondered for about the hundredth time what he was doing in the foothills of the... read more

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A Space Pioneer Remembered

August 14, 2013By

Plus: The First Installment of ‘What Is Don Reading?’ This month I planned to catch up on all those important topics that need to be written about but don’t make the cut, mainly due to space limitations — and then came the sad news of the passing of a good friend, mentor, and great Space and Missile Pioneer, Colonel Francis... read more

Trimble Juno T41: Rugged, Sturdy, and a Great Display

July 10, 2013By
Juno-T41_WEH_Gray_Military-W

I keep waiting for the cryptic phone call or emphatic email from Trimble that says, “You have had our evaluation units for over four months — when can we expect to see a review and when will you be returning our equipment?” Fortunately, Trimble is very understanding and would never make such a call or send such an email, I... read more

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Col. Bernard Gruber, GPS Directorate: Farewell Perspective on GPS Program

June 12, 2013By

I first met just-pinned-on, shiny and bright, Captain Bernard Gruber-USAF in 1992. Bernie had just arrived at the Space and Missile Systems Center at Los Angeles Air Force Base in California where he would hold several important positions. For those readers not aware of the mission and importance of the Space and Missile Systems Center (SMC), today SMC, which began... read more

Col. Bernie Gruber: Farewell Perspective on GPS Program

June 11, 2013By

This week’s Defense PNT newsletter by GPS World contributing editor Don Jewell carries an exit interview with Col. Bernard “Bernie” Gruber, who is leaving his post as director of the GPS Directorate after more than three and a half years in that position, and concluding his 26-year U.S. Air Force career. Look for the full interview later this week on... read more

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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