Assured PNT Articles

The Traceability of Time Synchronization: Why Internet Time Isn’t Good Enough

April 2, 2019

By Jeremy Onyan, Director of Time Sensitive Networks

In today’s modern networking infrastructure, great care is taken to ensure that networks are reliable, highly available and most of all, secure. Cybersecurity has emerged as a critical area in all facets of the internet. It’s an area that companies spend millions on each year. Yet still, there are often-overlooked areas that degrade security. One example of this is time.

Navwar Threats: How to Protect Naval Operations

November 12, 2018

By Stéphane Chèze, Business Development Director, Government Systems

Navigation warfare (Navwar) is an ever-increasing threat to naval missions, some of the most complex, covert and remotely operated military missions in the world. The naval theater of operations today relies on access to secure, continuous and reliable Positioning, Navigation and Timing (PNT) data for critical situational awareness and C5ISR systems.

How Resilient PNT is Used in Cybersecurity

October 3, 2018

By John Fischer, VP, Advanced R&D

Cybersecurity is a hot topic today. Hackers are always looking to undermine our network connections and we are always trying to protect against them. I’m no cybersecurity expert, but I am often asked, “Can Resilient PNT be used to improve cybersecurity?” Resoundingly, “yes.” Here are a few simple examples.

The Importance of Low Phase Noise in Mobile Applications

September 19, 2018

By John Fischer, VP, Advanced R&D

Whether in the air, on land, or at sea, vehicles will impart shocks and vibrations to their electronics, sometimes severely. In high vibration environments, the system designer must account for induced phase noise which can drastically affect overall performance. This white paper discusses the challenges of keeping low noise signals pure in any environment.

Mitigating an NTP Distributed Denial of Service (DDoS) Attack

September 17, 2018

By Pritam Kandel, Applications Engineer

Network time service is not something many businesses think about as a key component of their critical infrastructures. In fact, it is often overlooked entirely, and in error. As a result, the network architect or engineer often defaults to an easy alternative: using a server or network switch as the source of the network clock and synchronizing these sources to Internet time servers using Network Time Protocol (NTP). This white paper discusses the risks of, and alternative solutions to, "NTP Over the Internet."

Position, Navigation, and Timing: Assured, but Affordable?

September 10, 2018

By Jon Sinden, Product Manager, Rugged PNT Solutions

Maintaining a state of military readiness is a top priority for defense agencies. The ideal approach would deliver a consistent solution that is cost-effective across different platforms, with the ability to provide a compatible, scalable system to all of them. Expensive, inflexible A-PNT solutions will not solve the total problem. To provide affordable A-PNT for every link in the communications chain, a different approach is needed.

Need Low Phase Noise Under Vibration?

August 29, 2018

By Scott Hildebrandt, Program Manager

To improve performance of your radar system or signal intelligence (SIGINT) receiver, you need a time and frequency reference that can deliver a low phase noise signal. If your mission is signal intelligence gathering, then that means deeper penetration and more intelligence gathered.

Making Time Sensitive Networks Resilient Against Threats: Recent Advances

August 1, 2018

By John Fischer, VP, Advanced R&D

Today's time sensitive networks rely on available and accurate positioning, navigation and timing (PNT) signals to provide leaders with the information required to make timely and effective decisions. The proliferation of GNSS-degrading and denying devices across state and non-state actors put this critical information capability in jeopardy. Learn how a combination of alternative PNT signals with traditional GNSS references makes PNT applications resilient against jamming and spoofing.

Securing Critical Infrastructures from Jamming and Spoofing Cyberattacks

May 23, 2018

By Frederic Silva, Global Business Development Director, Intelligent Transport Systems

More than 2,000 billion Euros of critical infrastructures around the world are directly dependent upon GPS every day – including public and private, aerospace and defense, smart cities, IoT, finance, industry, automotive, ITS, mobility, broadcast and telecom, and Cloud. All benefit from this accurate and trustable PNT service to support their operations.