Anti-jamming Archives - Page 2 of 3 - Inside GNSS
January 29, 2019

ION’s ITM/PTTI 2019 Kicks Off in Fine Fashion on Tuesday

The first full day of the Institute of Navigation’s ITM/PTTI 2019 conference wrapped up Tuesday after a busy, education-filled day at the Hyatt Regency Reston in Reston, Virginia.

The program kicked off with a welcome and introductions by ION President Dr. John Raquet and program chairs Dr. Olivier Julien (ITM Program) and Dr. Michael Coleman (PTTI Program), who announced that this year marked 50 years of meetings for PTTI, with the first meeting having been held in 1969.

Read More >

By Stan Goff
January 22, 2019

GNSS Technologists Continue to Impact Industry Developments, Policies

At next week’s Precise Time and Time Interval Systems and Applications (PTTI) annual conference sponsored by ION, attendees can take part in a technical program designed to disseminate and coordinate PTTI information at the user level, review present and future PTTI requirements, inform government and industry engineers, technicians, and managers of precise time and frequency technology and its problems, and provide an opportunity for an active exchange of new technology associated with PTTI.

Read More >

By Stan Goff
January 10, 2019

Webinar on GNSS Jamming and Crowd Sourcing Detection and GeoLocation Held Jan. 22

Smartphones are seemingly omnipresent in our everyday lives. But new usage suggests that these mighty miniature devices can utilize crowd sourcing to defeat GPS jamming. For the latest on this critical topic, make sure to register for this 90-minute webinar on January 22 that will explore and compare the potential and current limitations of using smartphone density, ease of deployment and signal utility against the capabilities of dedicated networks.

Read More >

By Inside GNSS
January 3, 2019

Spirent’s SimMNSA Granted Security Approval by the Global Positioning System Directorate

GPS/GNSS test equipment provider Spirent Federal Systems has announced that their new M-Code solution, SimMNSA, has been granted Security Approval by the Global Positioning System Directorate. They are the first and only company to provide this highly anticipated solution for simulating classified GPS signals, and are currently taking orders, according to a press release.

Read More >

By Inside GNSS
December 24, 2018

Launch of First GPS III Satellite Begins Modernization of the GPS Constellation

At approximately 12,550 miles (20,200 kilometers) up … turn left. You have arrived at a new era for the Global Positioning System (GPS).

A major milestone in the U.S. Air Force’s plan to bring new technology and capabilities to the GPS constellation, the first Lockheed Martin-built GPS III satellite began “talking” with engineers and operators from ground control, as planned, following its successful launch Sunday morning.

Read More >

By Inside GNSS
November 27, 2018

Septentrio’s AIM+ Designed to Overcome RF Interference on GNSS Signals

GNSS signals are exceptionally vulnerable to radio frequency interference which can happen by accident – think of an amateur radio operator broadcasting locally – but also occur intentionally by jamming and spoofing devices. No matter the application, the stakes can be extremely high when GNSS signals are lost due to radio interference.

This could mean a loss of position in cars, taxis, trucks or robotic vehicles, emergency response vehicles, but also construction machines, marine survey, drone inspection or even financial transaction synchronization, food delivery and ride-sharing services. Interference is not some new phenomenon but with the many markets —demanding reliable positioning — it has become a priority today.

For more than 15 years Septentrio has been developing and perfecting unique interference mitigation techniques to address interference threats on GNSS. The countermeasures employed include adaptive notch filtering, pulse blanking, and unique wide band interference mitigation. Together, these measures along with other analogue and digital advancements form Septentrio’s AIM+ (Advanced Interference Mitigation) technology.

The company has an informational brochure designed to address the ever-increasing number of connected devices operating across the increasingly crowded RF spectrum that can cause unintentional interference of GNSS signals. Maintaining position accuracy, reliability and availability is a serious challenge both today and tomorrow for GNSS receivers operating in this crowded RF interference environment. As more and more new applications for GNSS are developed, challenges grow as more complex forms of interference appear worldwide. Identifying and overcoming interference with the application of advanced mitigation technologies is critical to ensure the quality of GNSS measurements and positioning.

You can download  your free 20 pages GNSS interference brochure and find out how we can help you monitor and mitigate interference in your everyday work and life.

Septentrio has developed a sophisticated RF interference monitoring and mitigation system (AIM+). To mitigate the effects of narrow-band interference, 3 notch filters can be configured either in auto or manual mode. These notch filters effectively remove a narrow part of the RF spectrum around the interfering signal. The L2 band, being open for use by radio amateurs, is particularly vulnerable to this type of interference. The effects of wideband interference, both intentional and unintentional, can be mitigated by enabling the WBI mitigation system. The WBI system also reduces, more effectively than traditionally used pulse-blanking methods, the effects of pulsed interferers.

By Inside GNSS
November 16, 2018

Air Force to Battle Hostile Navigation Environments with High-Assurance GPS Receiver Technology from Rockwell Collins

Rockwell Collins has been selected by the U.S. Air Force Life Cycle Management Center (USAF AFLCMC) to provide its latest-generation Digital GPS Anti-Jam Receiver (DIGAR). With unsurpassed GPS threat protection levels, DIGAR receivers will bring highly-reliable navigation for U.S. Air National Guard and U.S. Air Force Reserve F-16 aircraft operating in contested, electromagnetic environments, according to Rockwell Collins. This will be the first combat fighter aircraft to be installed with the latest version of the receiver.

Read More >

By Inside GNSS
October 31, 2018

Criminal Investigation Underway in GPS Jamming Incident That Crashed Drones, Caused HK$1M in Damage

More than 40 drones performing in a professionally organized light show fell from the sky in Hong Kong Saturday after the GPS signal they were using was jammed. The incident, which caused some HK$1 million in damage (U.S. $127,500), is now under criminal investigation.

The firm Sky Magic, which uses a customized fleet of performance dronesto do indoor and outdoor light shows, confirmed the incident but declined to discuss details of what happened because the investigation was still underway. The company, which has offices in the UK and Singapore, said it would provide more information once the investigation was concluded.

The unmanned aircraft were part of a 100-drone show that was cancelled after an outside party interfered with their operation, Asian news outlets reported. The light show was being performed in conjunction with the annual Hong Kong Wine & Dine Festival.The planned seven-minute show featured 100 rotorcraft with LED lights honoring the 10th anniversary of the festival by forming the outline of a birthday cake and the number 10.

The drones were lost during a show Saturday, October 27. Shows already had been done Thursday and Friday.

“After initial checks, the GPS signals for the drones were found to be interfered [with] by external parties and the board reported the issue to police immediately,” organizers said in a press release, according to the South China Morning Post.

“These are professional drones, which are already built with technologies that would direct them back to the takeoff origin,” Hong Kong Tourism Board’s Executive Director Anthony Lau told the Morning Post, “but the signals were so strong that many of them just dropped from the air.”

Lau said an initial police investigation ruled out the possibility that the machines had been hacked.

“They [the police] were here all night working with us, and our vendor, and looking into all sorts of possibilities, and have come to the conclusion that it is not computer hacking,” Lau said. “It is because someone jammed the GPS signal.”

By Inside GNSS