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Spectranetix announces high-precision A-PNT card for Army

November 30, 2021  - By
Photo: Spectranetix

Photo: Spectranetix

Spectranetix Inc., a Pacific Defense company, has announced the SX-124 ruggedized 3U OpenVPX high-performance positioning, navigation and timing (PNT) card.

With an ability to provide timing and positioning information in a GPS-denied environment through sensor fusion, the SX‑124 switch is designed for highly integrated systems with a requirement for the U.S. Army’s C5ISR Modular Open Suite of Standards (CMOSS) and alignment with the Open Group Sensor Open Systems Architecture (SOSA) technical standard.

The SX-124 can accept external sources or use its onboard GNSS receivers as reference inputs for timing and positioning data. The positioning data can be fused with internal and external inertial measurement units (IMUs). It distributes 11 100-MHz outputs and 11 1PPS outputs in a phase coherent manner.

The SX-124 provides timing and position holdover from an internal chip-scale atomic clock (CSAC) and IMU. A built-in time-of-day clock provides accurate network time stamps on system startup without GPS availability.

The SX-124 also provides enhanced location information and can be connected to an external IMU as well as a controlled reception pattern antenna (CPRA).

The SX-124 supports the standard VICTORY shared PNT services from a built-in GNSS timing receiver with an optional built-in M-code GB-GRAM receiver, CSAC and barometer to provide altitude information.

With the option for expansion to support over-the-air rekeying (OTAR), external fiber-optic gyroscope (FOG), alternative navigation (ALTNAV), and additional GNSS systems such as Galileo, the SX-124 supports the defense community’s need for a high-performance assured PNT (A-PNT) solution in the 3U VPX form factor and aligned to the latest open set of standards.

“Reliable situational awareness and cooperative, networked maneuvers demand assured PNT capability,” said Daniel Kilfoyle, CTO of Pacific Defense. “Our A-PNT solution embraces the pntOS open sensor-fusion framework and supports multiple sensor connections including GNSS receiver, GB-GRAM, IMU, FOG, CRPA and a two-channel software-defined RF receiver for added flexibility. Combined with exquisite timing and frequency performance and CMOSS alignment, this PNT card is yet another example of our commitment to CMOSS and SOSA.”

The SX-124 card is on track for production release early next year.

About the Author:


Senior Editor Tracy Cozzens joined GPS World magazine in 2006. She also is editor of GPS World’s newsletters and the sister website Geospatial Solutions. She has worked in government, for non-profits, and in corporate communications, editing a variety of publications for audiences ranging from federal government contractors to teachers.

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