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Our nation’s security, economy, and infrastructure depend on positioning, navigation, and timing (PNT). While GPS is an integral and irreplaceable part of PNT, Assured PNT must take a layered approach due to GNSS vulnerabilities. The Army PM PNT defines Assured PNT as access plus integrity: maintaining access to PNT data in GPS degraded or denied environments and ensuring non-corrupted data. Spirent Federal can help our customers achieve Assured PNT through many modalities, some of which include jamming & spoofing assessment and mitigation, GNSS interoperability, inertial and other non-GNSS sensors, and alternative RF navigation.
Phil Bonilla, Systems Engineer at Spirent Federal, presents information on non-GNSS sensors
Executive order 13905, Strengthening National Resilience Through Responsible Use of Positioning, Navigation, and Timing Services, issued on February 18, 2020, requires the development of a national plan “for the R&D and pilot testing of additional, robust, and secure PNT services that are not dependent on global navigation satellite systems (GNSS).” To meet this requirement, a high amount of interest has developed to use multiple navigation sensors to improve integrity, performance, and autonomy. Spirent Federal is continuing to partner with government and industry to enhance its existing solutions and implement new capabilities following open source standards. One such project, the Open Ethernet Interface (OEI), will enable realistic sensor modeling via ethernet connectivity, allow for control of error inputs, maintain low latency communications, and facilitate precise timing.
Phil Bonilla, Systems Engineer at Spirent Federal, discusses alternative RF navigation
Additionally, non-GNSS sources of RF (radio frequency) are of interest in highly degraded or contested signal environments. Interest is focused on LEO (low earth orbit) constellations. These systems offer high receiver signal power (relative to GNSS) and a secure & resilient link to augment GNSS. Spirent is actively engaged with Alternative RF vendors to incorporate signal simulation capability and plans to offer an Alternative RF navigation product in 2021. This product, SimAltNav Replay, will allow for concurrent GNSS and alternative RF signal simulation.
Roger Hart, Engineering Director at Spirent Federal, discusses the benefits of GNSS interoperability
GPS Anti-jam and the Latest in Sensor Fusion Testing
In this webinar, we will discuss the merger that formed Raytheon Technologies, the critical importance of GPS anti-jam solutions, new methods to interface non-GNSS sensors into a GNSS test suite, how precise time synchronization improves sensor use, and the latest in sensor fusion testing. Raytheon Intelligence & Space Join Chad Pillsbury and Ben Graham, senior […]View Webinar
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Inertial navigation systems (INS), like most navigation systems, have evolved through countless iterations and improvements over many years. An INS, unlike other navigation technologies, does not rely on any external signals or inputs to aid navigation. It is, therefore, extremely difficult to spoof, jam or disrupt the system, and solar flares, ground/sky visibility and climate […]Read Blog