Defense

Anti-jam technology: Demystifying the CRPA

April 12, 2017By

Controlled reception pattern antennas (CRPAs, pronounced “serpers”), adaptive antennas, null-steering antennas, beamforming antennas… You’ve probably heard of at least one of those terms in any discussion around GPS anti-jam technology for defense. Because they are all terms that describe essentially the same thing: a specialized antenna that helps protect GPS receivers from interference and jamming. But what exactly are they? Where... read more

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GPS satellite security discussed in House hearing

April 11, 2017By

A U.S. Congress hearing on March 29 focused on the vulnerability of satellite systems to strategic attacks, according to an article by The Hill. The GPS constellation in particular was discussed as critical to energy, telecommunications and finance sectors. Experts and lawmakers expressed their concerns at the joint hearing between the House Homeland Security Committee and House Armed Services Subcommittee on Strategic... read more

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GPS Source receives security approval for DAGR device

April 11, 2017By

GPS Source has received Global Positioning Systems Directorate security approval for its family of Selective Availability Anti-spoofing Module (SAASM)-based Host Application Equipment (HAE). GPS Source announced security approval for the Enhanced D3 (ED3) and Enhanced FLO-G (E-FLO-G) with integrated SAASM receivers. The ED3 and E-FLO-G are upgradeable versions of the popular DAGR Distributed Device (D3) and are capable of distributing SAASM today,... read more

Spectracom, Satelles sync in multiple indoor locations

March 22, 2017By

Orolia has synchronized a Spectracom SecureSync high-precision time server with the new Iridium Satelles Satellite Time & Location (STL) time synchronization signal powered by Iridium satellites in several indoor environments in the field. Configured with an embedded STL receiver and a small patch antenna, the SecureSync synchronized with the STL signal in several challenging indoor locations. Indoor success can be... read more

What is the biggest unmanned autonomous vehicle (UAV) challenge?

March 6, 2017By

What is the biggest challenge facing the UAV industry? Go to gpsworld.com/17marpoll to give us your opinion by March 22 and you’ll also be entered in a drawing to receive a $50 gift card. Here are the possibilities on offer, plus an “other” category for you to specify something bigger if you think we’ve omitted anything. Better quality images and... read more

This article is tagged with , , and posted in Defense, Featured Stories, Latest News, Machine Control/Ag, Mapping, Survey, UAV/UGV

Raytheon, US Air Force upgrade navigation in decoy-jammer vehicle

March 1, 2017By

Raytheon Company and the U.S. Air Force validated performance of an upgraded navigation system for the Miniature Air Launched Decoy-Jammer (MALD-J) in six flight tests from B-52 and F-16 aircraft at White Sands Missile Range, New Mexico. The system upgrade, designated as GAINS II (GPS-Aided Inertial Navigation System), includes an enhanced multi-element GPS-controlled antenna assembly. The new technology improves MALD-J... read more

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Homeland Security spells out receiver improvements

February 23, 2017By

In early January, a new U.S. Department of Homeland Security (DHS) document appeared: “Improving the Operation and Development of Global Positioning System (GPS) Equipment Used by Critical Infrastructure.” The document focuses on receivers used in critical infrastructure, with an emphasis on timing receivers. It provides owners, operators, researchers, designers and manufacturers with information to improve the security and resilience of... read more

Name the alt-PNT leader for a $50 gift card

February 13, 2017By

Quick, what’s the best alternative when GNSS signals are not available? This is not a simple question, but we’re asking for a simple answer. Among the multiple avenues pursued at the U.S. Defense Advanced Research Projects Agency (DARPA), as described in February’s PNT Roundup, which has the most promise? Inertial sensors Chip-scale atomic clocks Cell signals Low-Earth orbit communications satellites... read more