GPS World Staff

Letters to the Editor: The Cost of Reliability

August's letters to the editor.

“The Economic Benefits of Commercial GPS Use in the United States and the Costs of Potential Disruption” was presented by Nam D. Pham, Ph.D., of NDP Consulting, during a June 21 webinar sponsored by the Coalition to Save Our GPS. The report states: “The direct economic benefits of GPS...more >>

My first impression of the new Nike+ SportWatch (with GPS powered by TomTom) was, “How is a brick that size not going to get in the way of this 50-year-old runner who still thinks he’s all that and a bag of chips?”

I was fortunate enough in 1993 to have three minutes of fame on 60 Minutes in a program about GPS that aired between Christmas and New Year’s that year. Also in the 13-minute segment was a short demo of a GPS PLGR...

Letters: The GPS history articles by Brad Parkinson; gifts to L5; Paul Cross, GPS World Advisory Board member, bids Farewell.

A look at how things have changed since GPS World began, with participation by CAST Navigation, Hemisphere GPS, ITT, Rakon, and Spirent Federal.

Few outside the position, navigation, and timing (PNT) community will also recall that the day before the 9/11 attacks, the U.S. government released a landmark document that described the vulnerabilities of services provided by GPS to disruption, whether by attack or inadvertent interference. The...more >>

Our readers respond to the cover features in the May and June issues: the two-part special the "Origins of GPS" and Richard Langley's look at "GPS by the Numbers."

After choosing the most appropriate receiver for your application from last month’s survey, you may need an antenna, too. We have collected key specifications for 336 antennas from 34 manufacturers. We have made every effort to present an accurate and comprehensive listing of antenna information;...more >>