Archives

Does Automobile as Ultimate Mobile Device Include LBS?

June 9, 2011 - By

As touchscreens get larger in vehicles, so does the thought that location-based services should be included. At the Telematics Detroit 2011 conference, while most industry observers say that some sort of advertising will soon be in every vehicle, not everyone is sold on having advertising flashed to drivers as they go by a business. read more

My 1967 Israeli GPS, Eyewitness to History

June 8, 2011 - By

The recent furor concerning President Obama telling Israel to withdraw to its 1967 pre-war boundaries brought back some vivid memories for me. I was there in Israel in 1967, coincidentally and thus unintentionally covering the Six-Day War for Radio Free Europe, along with several other genuinely surprised correspondents and journalists. We encountered many unusual situations and not a few difficulties, which I will relate shortly. In his Mideast statement, the President obviously misread his GPS (Geo-Political Situation) where Israel is concerned. He, along with his appointee at the Federal Communications Commission, also misreads the needs of this nation, and here I’m talking about the real GPS — the Global Positioning System. The two scenarios — Israel in 1967 and the United States today — are connected, and that connection has to do with GPS. I urge all my readers to take prompt action, as outlined at the end of this column. Believe me, it is in your own best interest. read more

This article is tagged with , and posted in Defense, Opinions

Innovation: MBOC Signal Options

June 1, 2011 - By

Performance of Multiplexed Binary Offset Carrier Modulations for Modernized GNSS Systems
A candidate for modernized GNSS civil signals in the L1/E1 band was BOC(1,1), a binary-offset-carrier signal with a "split spectrum" that has negligible impact on the existing GPS signals. However, a signal with better acquisition capabilities and improved multipath performance (while still compatible with the existing GPS signals) is a multiplexed BOC modulation, MBOC(6,1,1/11). The MBOC spectrum can be achieved by following one of several different signal-construction paths with some resulting differences in how a receiver tracks the signal and its associated performance. read more

This article is tagged with and posted in From the Magazine, GNSS, Innovation

How GPS and GLONASS Got Together — and Other Recent Events

June 1, 2011 - By

The recent broadcast of the first CDMA signal from the new GLONASS-K satellite culminates a long series of events that began in 1989. A key participant gives a first-hand account of the history of many meetings, formal and informal, that created true interoperability between the two major satellite systems, giving users a modern GNSS in action. read more

This article is tagged with , , , and posted in Design & Test, GNSS

Mitigation for Missiles: Fuzzy Logic and Intelligent Tracking Loops Cope with Interference

June 1, 2011 - By

A fuzzy tracking system performs as a narrow bandwidth tracking system in terms of noise reduction, and a wide bandwidth tracking system in terms of dynamic response, overcoming the contradiction between receiver bandwidth requirements using classical tracking techniques for either noise reduction or dynamic tracking. read more

This article is tagged with and posted in Defense

The System: Third Report by LightSquared/GPS Technical Working Group

June 1, 2011 - By

Plus: Locata as Alternative PNT, Indian SBAS, Galileo Launch Slow but steady progress of the Working Group (WG) convened by the Federal Communications Commission (FCC) to study the GPS overload/desensitization issue is related in the group’s Third [monthly] Pogress Report, filed with the FCC on May 16. For the third consecutive time, the report contains little in terms of actual... read more

This article is tagged with , , and posted in GNSS

Out in Front: Business Hand at the Helm

June 1, 2011 - By

I met Chris Litton at my first European Navigation Conference in Sevilla, Spain, May 2001. I recall a long conversation over a dinner of Moorish and Andalusian dishes, attended by the staffs of NavCom Technology and GPS World, in the Mesón Don Raimundo. Over the years we met again and again at conferences hither and yon. “Great cities of the world!” became our greeting. I’m very happy to announce that we now play on the same team — to your ultimate benefit. Meet J. Christopher Litton, international account executive and ad manager for GPS World magazine, website, e-newsletters, webinars, and the whole enterprise. read more

This article is tagged with , and posted in From the Magazine, Opinions