Inertial Labs, a VIAVI Solutions company, has announced IRINS, a Low Earth Orbit (LEO)-aided inertial navigation system (INS) designed to allow full operation across land, air and sea in denied, degraded and disrupted space operating environments (D3SOE).
This platform, which combines the capabilities of an INS, an altitude and heading reference system (AHRS), and a LEO PNT receiver, is said to represent a significant advancement in VIAVI’s leading portfolio for assured Positioning, Navigation, and Timing (APNT) by bringing together the timing expertise of Jackson Labs with the globally proven INS capabilities of Inertial Labs.
In order to tackle the rapidly increasing amount of spoofing and jamming attacks that have affected military and critical infrastructure, the IRINS embedded system was developed. Inertial navigation and robust LEO-based PNT are now offered by a single vendor in a fully integrated system.
The GNSS-independent STL-2600 LEO Iridium receiver module, an AHRS, and an INS are all part of the system. These features allow the system to minimize bias from causing drift in addition to calculating altitude, location, velocity, and time data.
The device also incorporates a GNSS receiver with a Controlled Reception Pattern Antenna (CRPA) port to help in the detection and elimination of attack signals.
IP67 and MIL-STD-810G environmental requirements are met by the IRINS. The company’s fully calibrated tactical-grade MEMS 3-axis accelerometer, gyroscope, and clock serve as its foundation.
As part of its AHRS, these are integrated with magnetometers, barometers, and an optional onboard air-data computer.
The company’s STL-2600 receiver, which connects to the Iridium LEO constellation, facilitates satellite communication. All features are housed in a compact 126.5 × 49.3 × 53.3 mm enclosure.
Leadership Comments
“The IRINS is the first fruit borne of VIAVI’s visionary strategy to mitigate vulnerabilities in positioning, navigation and timing, bringing together resilient satellite-based timing with tactical-grade IMUs to deliver the most precise PNT for GNSS-denied environments,” said 
Jamie Marraccini, Vice President, Inertial Labs Products, VIAVI. “By tightly coupling inertial sensing, LEO-based timing and navigation and anti-jam GNSS technologies into a single platform, the IRINS provides unmatched continuity, accuracy and trust for operations in contested and denied environments.”
“Assured access to PNT is critical for operations in contested environments,” said Maynard Porter, Director, Government PNT Business, Iridium. “Integrating Iridium PNT alongside VIAVI’s INS and AHRS provides users with an exceptionally resilient source of time and location data to maintain operational effectiveness when GNSS signals are disrupted.”
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