Defense PNT Newsletter

Review: Putting the Mountain-Tough Yuma 2 through Its Paces

January 8, 2014By

My original review of the first Yuma rugged tablet from Trimble MCS (Mobile Computing Solutions) was penned in August of 2011. My original plan was to have the review of the new Yuma 2 ready to go exactly two years later. But, as we all know, man plans and God laughs. Actually, the problem, I must admit, is a bit more personal in nature; you see, I have been enjoying the Yuma 2 to such a degree that it was difficult to write about it because then I have to send it back. I have been selfish too long — read on for the review of the new Trimble Yuma 2 rugged tablet computer that is perfect for fieldwork, especially fieldwork involving GPS and GIS applications. read more

Gordon’s Positioning System, Circa 1970

December 10, 2013By
800px-MonNatForest

One of my oldest and best friends died today – and he was just a kid, only 62. In the prime of his life, and yet I know he led a very full life and had no regrets when he passed on to that highway in the sky — somewhere where he will hopefully not have to ask directions, because neither one of us was very good at that. Indeed, in our youth, both Gordy and I were GPS-challenged long before GPS was a gleam in Dr. Parkinson’s eye. read more

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Ubiquitous PNT and Sequestration: The World Runs on GPS Time

November 18, 2013By

A couple of years ago, wearing a different hat, I found myself on a guided tour of a key military C2 (Command and Control center) that was about as big as a football field and was to be deployed somewhere in Southwest Asia. My colleagues and I, who are all GPS SMEs (Global Positioning System Subject Matter Experts), asked the... read more

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Decisions, Decisions: GeoGathering and ION GNSS

October 9, 2013By
Don Jewell visits the Exelis table at the GPS World Leadership Dinner.

Many may consider it a distinction without a difference, but quality matters, whether it concerns a life-changing decision or something as simple as which conference to attend. When resources are scarce, making the right decision, or sometimes just making any decision, matters — for many in our government this paradigm should reign supreme. Over the past 24 months, it seems... read more

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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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