TAG: jamming

Singapore Joins with China to Develop Apps, Protect BeiDou Signals

June 22, 2015By

Singapore and China are jointly opening a center to develop applications for the BeiDou GNSS, according to a report in Space News. The nations also have signed a commercial agreement to create anti-jamming systems to protect BeiDou signals. At a briefing during the CommunicAsia show held in Singapore May 31-June 2, SpaceTime Technology Pte Ltd. and ST Electronics (Satcom & Sensor Systems) Pte Ltd.... read more

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Expert Advice: Low-End Jam Resilience May Not Be Desirable

May 29, 2015By
Jan Wendel

At the European Navigation Conference held in Bordeaux, France, April 7–10, a keynote session and ensuing panel discussion addressed the issue of “GNSS Resilience for Terrestrial and Naval Applications.” During the discussion, two questions from the floor drew these responses from panelist Jan Wendel of Airbus Defence & Space GmbH, a leading European aerospace company. read more

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Jammer Hunting with a UAV

May 4, 2015By
spicer_opener_O

A fully autonomous, unmanned aerial vehicle (UAV)-based system for locating GPS jammers, currently under development, seeks to localize a jammer to within 30 meters in less than 15 minutes in an area comparable to that of an airport. Ultimately, the design team targets the ability to locate multiple, simultaneous jammers, and navigate in intermittent GPS and GPS-denied environments using a... read more

KVH Receives $1.5M Order for TACNAV Systems

May 1, 2015By
Credit: U.S. Armed Services.

KVH Industries Inc. has received a $1.5 million contract for the delivery of tactical navigation systems for use by an international military customer in an armored vehicle application. A variant of KVH’s TACNAV TLS and TACNAV Light, the system is designed to help military vehicle crews maintain 100% situational awareness. The hardware shipments for this order are expected to be... read more

Protecting Position in Critical Operations

April 30, 2015By
Photo credit: Simon Greter (Wikimedia Commons, CC-BY-SA 3.0)

In January, the U.S. Coast Guard described how a major East Coast intermodal shipping facility was degraded by a GPS disruption for more than seven hours. read more

Expert Advice: The Impact of RFI on GNSS Receivers

April 1, 2015By
Dovis-Fig1-excerpt

By Fabio Dovis When subjected to very strong interference, a GNSS receiver can be totally blinded and stop working. This is often the scope of intentional jammers. However, in a number of cases the presence of interference is severe enough to significantly decrease receiver performance, but not so much as to make the receiver lose its lock on the satellite signals... read more

All GNSS Attend, But Galileo Gets the Spotlight

March 30, 2015By

First and foremost, let’s give a big hand to Adam and Anastasia, the two Galileo FOC satellites that were successfully launched on March 27. Following the not-so-successful Galileo launch in August, it was imperative that this go smoothly. Although the Double-A launch occurred after the conclusion of this year’s Munich Satellite Navigation Summit, anticipation of the event set the context... read more

Bill Supports eLoran as GPS Backup

March 27, 2015By

A bi-partisan group of legislators led by Congressman John Garamendi (D-Calif.) has introduced a bill that would require the U.S. Secretary of Defense to establish a backup for GPS within three years using eLoran. The National Positioning, Navigation, and Timing Resilience and Security Act of 2015, H.R. 1678, was co-sponsored by Congressmen Duncan Hunter (R-Calif.), Peter DeFazio (D-Ore.), and Frank LoBiondo (R-N.J). Garamendi is the... read more