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Resilient PNT: How to Detect, Protect and Prevent Disruption of GPS/GNSS/PNT Signals and Sources

September 10, 2020
By John Fischer, VP, Advanced R&D
 
For the last two decades, reliance upon GPS/GNSS for positioning, navigation and timing (PNT) by civilian applications has been an overwhelming success, providing increasingly accurate and reliable PNT information everywhere for free. However, in recent years, malicious threats have emerged have exposed the Achilles heel of GPS/GNSS: Its weak power and unencrypted signal format leave it vulnerable to jamming and spoofing.
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Enterprise Network Timing: NTP/PTP with Layered Timing Topology - A Best Practice Guide for GPS/GNSS Engineers
September 2, 2020
By Pritam Kandel, Applications Engineer
 
Network timing in the enterprise world is often overlooked, and that is a mistake. Network architects or engineers often default to an Internet-based timing architecture for their ultimate source of time. In today’s world of frequent cyberattacks, regulatory compliance requirements and demand for highly stable and accurate network timing, is that the best we can do? Here is another approach: the hierarchy (layering) of timing topology.
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How to Test the Resilience of Your GNSS Receiver to the Ligado Network

August 17, 2020
By Pierre-Marie LeVeel, Principal System Architect – Simulation
 
If you have read the Ligado white paper by my colleague John Fischer, you now understand the challenges caused by the new Ligado signals. This communication network will broadcast signals in the near L1 Band, potentially interfering with GNSS signals. This blog will show you how to evaluate the resilience and performance of your receivers in such environments with accessible equipment. 
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Top 5 Resilient PNT Applications for Federal Year End Funds

August 5, 2020
By Michael Messina, Senior Manager, North America Aerospace, Defense and Government
 
The federal fiscal year end is fast approaching, and 2020 may see an increase in end of year funds due to COVID-related procurement delays. As you explore the best use of year end funds, here are the top Resilient Positioning, Timing and Navigation (PNT) applications government program managers and systems integrators invest in for improved performance, security and mission success.
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11 Reasons not to Test with a GSG 5/6 Simulator

July 30, 2020
By Robyn Federman, Head of Global Commercial Marketing
 
You may think that if your GPS/GNSS receiver is tested, you don’t have to use a simulator. But your design can change everything, and it may not behave as expected post-integration and in the field.
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