Defense

Applied EM Offers Anti-Jam Antenna

March 26, 2014By

Applied EM’s anti-jam GPS antenna, AJGPS045, has achieved a four-channel Controlled Radiation Pattern Antenna (CRPA) in a very small size, weight and power (SWAP) particularly suitable for airborne platforms. Its footprint is the same as a standard GPS Fixed Radiation Pattern Antenna (FRPA), the FRPA-3. This is a key enabler to bringing greatly improved anti-jam performance to smaller platforms and... read more

Exelis GPS Threat Detection Helped Safeguard Super Bowl XLVIII

March 18, 2014By

Signal Sentry 1000, an Exelis product that detects and locates GPS interference sources in 3D by using longitude, latitude and altitude, was deployed during Super Bowl XLVIII at the MetLife Stadium in East Rutherford, New Jersey. During the Super Bowl, GPS devices were used extensively to track and monitor the location of team members and officials. GPS was also used... read more

ANGELS, GSSAP, CNAV, and GPS: Guidance From Above

March 13, 2014By
A still from the movie Gravity, where space real estate feels really small. (credit: Warner Bros. Pictures)

Wow, what a bevy of acronyms. If you already know what they mean, great. If you don’t, just hang in and all will be made clear. E. L. Doctorow once wrote, “Writing is a socially acceptable form of schizophrenia.” Now, I am not sure how I feel about that or how my daughter who is a practicing Clinical Psychologist (PsyD) would interpret... read more

This article is tagged with and posted in Defense PNT Newsletter, Newsletter Editorials

PNT Advisory Board Hears Air Force CNAV Plan

March 12, 2014By
PNTAdvBd-O

The U.S. National Space-Based Positioning, Navigation, and Timing (PNT) Advisory Board has published the minutes of its December 4–5, 2013, meeting, opening with a quote from Albert Einstein, “We cannot solve our problems with the same thinking we used when we created them,” courtesy of Board Chair Dr. James Schlesinger. Among many other topics addressed, the Board heard a report... read more

Airbus Helicopters Selects Honeywell Navigation System

February 25, 2014By

Honeywell Aerospace’s LASEREF VI navigation system has been selected by Airbus Helicopters for its light helicopter platforms, the EC145 T2 and EC645 T2 family. The LASEREF inertial reference unit (IRU) allows helicopter operators to always have an autonomous navigation source available in the absence of a GNSS and radio navigation. The capability is especially useful when navigating during a mission... read more

GNSS Vulnerable: What to Do?

February 18, 2014By

Too Much Sensitivity, Not Enough Robustness, Says Parkinson Brad Parkinson, the founding architect of GPS, told a UK conference that the system needs to be made more robust to ensure worldwide availability of services to users. His concerns over GPS availability relate to threats such as the loss of authorized frequency spectrum (implicitly creating licensed jammers), space weather due to... read more

The Gold Standard: What’s in a Name?

February 12, 2014By
Don Jewell

Our esteemed editor-in-chief and publisher at GPS World, Alan Cameron, penned an editorial in January concerning claims made by the People’s Republic of China regarding the Gold Standard for PNT (position, navigation and timing). The Chinese recently claimed that its BeiDou system averaged a user range error (URE) of 2.5 meters using zero age of data (ZAOD), 95% of the... read more

GPS III Payload Facing Delays

February 11, 2014By

Gen. William Shelton, chief of Air Force Space Command, said the date when prime contractor Lockheed Martin and payload manufacturer Exelis are expected to have the first GPS satellite ready for launch will slip from its original target at the end of this fiscal year, according to National Defense Magazine. Technical difficulties are slowing the development process, he said. “We’re... read more