Saab is pushing deeper into passive electronic warfare (EW) with a new compact sensor designed to quietly monitor radar emissions from a range of threats, including fighter jets, surveillance radars, and surface vessels.
Called Sirius Compact L24R, the system operates autonomously and continuously processes intelligence data without storing sensitive information on the sensor itself.
It is compatible with interfaces such as Sensing for Asset Protection with Integrated Electronic Networked Technology and Cooperative Electronic Support Measure Operations.
Designed for mounting on masts or existing infrastructure, Sirius Compact L24R supports both fixed and mobile deployment, giving operators flexibility to expand coverage.
Its modular architecture enables rapid installation while allowing integration across networked defense and surveillance environments.
“The new Sirius Compact sensor, L24R, is a welcome extension to the existing tactical Sirius Compact R-ESM portfolio, with a sensor built specifically for persistent, fixed-site surveillance, offering wide area strategic coverage,” said Carl-Johan Bergholm, head of surveillance business area at Saab.
The company showcased the system at the Association of Old Crows Electronic Warfare Europe 2026 event in Helsinki, Finland.
Frequency and Performance
Weighing only 8 kilograms (17.6 pounds), the Sirius Compact L24R is roughly the size of a shoebox and optimized to meet strict size, weight, and power requirements.
It offers a frequency coverage range of 1 to 18 gigahertz and an instantaneous bandwidth of 500 megahertz, enabling it to monitor and process a wide spectrum of radar signals.
The system uses Ethernet connectivity, runs on 14-32 volts direct current, and has a typical power consumption of 65 watts.
Saab also noted that the sensor does not require external cooling, simplifying integration and reducing the system’s overall logistical footprint.
