Stabilizers are mechatronic systems that enable ships or submarines to establish uplink and downlink radio links with geostationary or geosynchronous satellites. They control parabolic reflectors with diameters ranging from 400 mm to 2,500 mm.
Cegelec Défense Mechatronics Solutions (CDMS) offers several product types, including the compact SNC naval stabilizers and the SNA servo-controlled naval stabilizers, selected based on the diameter of the telecommunications antenna.
The SNC400, SNC750, and SNC1000 models support antennas with diameters of 400 mm, 750 mm, and 1,000 mm in diameter, respectively, while the SNA1500, SNA2000, and SNA2500 models carry antennas measuring 1,500 mm, 2,000 mm, and 2,500 mm.

SNC-type compact naval stabilizers are three-axis systems, comprising yaw, roll, and pitch. They are equipped with an electrical distributor and a rotary joint allowing continuous rotation of the yaw axis. The stabilizer’s attitude is measured by an inertial measurement unit (IMU) integrated into the mechanical system.
SNA-type servo-controlled naval stabilizers are based on a patented mechanism that enables continuous pointing of an antenna within a 220° sphere, without dead spots or singular positions. Combined with inertial sensors and an electronic control unit, this system offers a high-precision, cost-optimized solution to meet antenna stabilization needs on any type of vessel.

The chosen kinematic configuration requires neither an electric rotary joint nor a microwave rotary joint. The connection to the antenna is provided by a coaxial cable or a flexible waveguide, and available space at the rear of the antenna allows, if necessary, for the integration of the transmitter in accordance with onboard mass constraints.
The stabilizer is mounted on a three-axis damped suspension, with limited travel to accommodate the available space inside the radome.
In terms of design, certain mechanical parts of the SNA and SNC models are cast from aluminum, while all components are CNC-machined. Their protective coatings are suitable for marine environments. The components are selected to meet the demanding conditions of the maritime environment and ensure high reliability: high-energy magnet servo motors, robot-type gearboxes with lifetime lubrication, waterproof angular sensors, and waterproof connectors.