Second-generation transcoder for assured PNT in GPS-denied environments

VIAVI Solutions Inc. has launched its second-generation RSR Transcoder, created to maintain operational capability in GPS/GNSS-denied, degraded or disrupted space operational environments (D3SOE).

Globally, incidents of GPS and GNSS jamming and spoofing have surged as these tactics become a standard aspect of electronic warfare. While aimed at disrupting defence operations, these hostile signal manipulations also pose a growing threat to sectors reliant on precise timing and geolocation, including aviation, communications and emergency services.

The second-generation transcoder delivers assured PNT across a wide range of outputs, enabling the upgrade of legacy systems. It includes a GPS full constellation simulator and utilises a patented algorithm to deliver near-instant conversion of assured inputs, such as M-code, SAASM, IMU/INS, and other signals of opportunity. These are converted to Universal GPS L1 and L2 signals with C/A-code and P-code output, enabling easy upgrading of any legacy GPS with assured PNT capability.

The ruggedised IP68 enclosures are mountable on land, sea and air platforms and have been developed to run in a covert lights-out operation mode. The transcoder outputs at 100Hz, features an ICD-GPS-153 interface, and is available with 4-, 8-, and 24-hour holdover oscillator options.

“Modern military systems are heavily reliant on PNT technologies, but advances are enabling adversaries to jam and spoof GNSS, forcing those fighting, as well as equipment such as drones, to operate in D3SOE,” said Doug Rusell, senior vice president of Aerospace and Defence, VIAVI. “The RSR Transcoder enables cost-effective upgrades to legacy systems with state-of-the-art resilience against such attacks.”