Don Jewell

I have long been an advocate of signal diversity as a solution to many of the ills that plague the GPS user, especially outdated user equipment. The best equipment, if it were available today, would be the PHGPST or Perfect Handheld GPS Transceiver. I cannot count the thousands of letters and...more >>

Reports in daily news media such as the Washington Post and Denver Post that “Lockheed Martin will lose its entire fee of about $70 million to defray an 18 percent cost overrun” on GPS III satellites misconstrue the facts. Don Jewell, contributing editor for GPS World, said after informal talks...more >>

One of the long-standing issues for support of IIA vehicles after the future GPS Operational Ground Control Segment’s (OCX’s) ready-to-operate (RTO) date, which should fall in December 2016 at the latest, is what ground command-and-control (C2) system will steer GPS IIA satellites, do...more >>

There is a reason the Munich Satellite Summit is billed as a summit and not a symposium or conference. It’s a different atmosphere that invites group chats, informal get-togethers, and networking. One item of note that I came away with is that the Chinese are looking for help and partners for...more >>

Most of Munich is an ultra-modern German city, albeit one of the most expensive cities in Europe, where you can travel anywhere by tram, automobile, S-Bahn, rail or taxi. But why bother when you have the opportunity and thrill of walking through the old city center and have Bavarians greet you with...more >>

Advanced low-frequency (LF) signals are back on the air in North America, with live testing of a wide-area precise-timing solution. Initial tests include a comprehensive pallet of signals, including eLoran, that are being evaluated for their ability to provide a robust, wide-area, wireless...more >>

The first part of the recent UrsaNav press release says it best: This week for the first time since August 2010 advanced low frequency (LF) signals, including a new eLORAN, are on the air in North America! As a result of a Cooperative Research and Development Agreement (CRADA) between the United...more >>

I brushed the snow from my keyboard and in my mind I could hear the neighbors whispering, "Call the men in white coats, there he goes again." They may have cause for concern, as I am sitting on my deck during a lull in a major blizzard, typing on a laptop computer half buried in snow. My warfighter...more >>

I have long advocated that our warfighters and first responders deserve the best equipment available so they can answer the basic question, "Where Am I?" quickly and with complete certainty. Or, "Where am I now and how do I get to someplace of relative safety quickly?" Unfortunately,...more >>

December is typically the month when writers of regularly featured columns wax nostalgic and engage in a certain amount of prognostication. This year I enlisted the help of Lt. Col. Jennifer Grant, the 2SOPS/CC at Schriever AFB, the home of GPS, to help us with our year-end review and crystal-ball...more >>