Azimuth Positioner for IFF Antenna
Axis Servo-Driven Pedestal for IFF Radar Grid Antenna Systems on Vehicle and Ship Platforms
The Azimuth Positioner for IFF Antenna is a compact, stand-alone single-axis servo positioner designed and supplied by System Controls for rotating IFF radar grid antennas in continuous azimuth on vehicle and ship platforms. Delivering ±0.01° azimuth accuracy at 15 RPM with N x 360° continuous rotation, the system comprises a Servo Drive Assembly for open-environment antenna drive and an independent Servo Control Unit for remote operation from a closed, convenient location. Compliant with JSS 55555 and MIL-STD-461F, and rated for outdoor operation at altitudes up to 3,500 metres.
What is the Azimuth Positioner for IFF Antenna?
The Azimuth Positioner for IFF Antenna is a single-axis servo-driven pedestal system designed to mount and rotate an IFF radar grid antenna in continuous azimuth on vehicle or ship platforms. The system is built around two primary assemblies: the Servo Drive Assembly, which houses the motor, rotary joint and mechanical drive in the open environment alongside the antenna, and the independent Servo Control Unit, which can be located remotely in a closed and convenient location for ease of operation.
| Parameter | Specification |
|---|---|
|
Number of Axes |
Single axis
|
|
Travel Limits
|
N x 360° (continuous)
|
|
Accuracy
|
±0.01°
|
|
RPM
|
15 RPM
|
|
Rated Torque
|
25 Nm at 15 RPM
|
|
Application Type
|
Ground / Marine
|
|
Mounting Type
|
Vehicle / Ship
|
|
Payload Mounting
|
Top mount
|
|
Weight of Pedestal
|
20 kg max
|
|
Weight of Payload
|
25 kg max*
|
|
Turntable Diameter
|
300 mm
|
|
Height
|
400 mm
|
|
Hollow Shaft Diameter
|
40 mm
|
|
Rotary Joint
|
2 channel co-axial
|
|
Motion Controller
|
Independent controller
|
|
Interface
|
RS485 / Ethernet
|
|
Finish
|
Painting or powder coating as per customer requirement
|
|
Operating Environment
|
Outdoor at 3500 m altitude
|
|
Defence Standards
|
JSS 55555
|
|
EMI/EMC
|
MIL-STD-461F
|
High Accuracy Continuous Azimuth Rotation
The positioner delivers N x 360° continuous azimuth rotation at 15 RPM with an accuracy of ±0.01°, providing the precise, consistent antenna scan rotation that IFF radar system operation demands. An optimum motor drive and associated electronics ensure stable and accurate angular motion to the payload throughout continuous operation cycles.
Integrated Rotary Joint for Uninterrupted Signal Continuity
A 2-channel co-axial rotary joint is built into the Servo Drive Assembly, maintaining uninterrupted electrical connectivity between the rotating antenna assembly and the stationary signal path during continuous azimuth rotation. This eliminates the need for an external rotary joint and simplifies system integration on vehicle and ship platforms.
Dual Assembly Architecture for Flexible Installation
The system separates the Servo Drive Assembly from the Servo Control Unit, allowing the mechanical drive to operate in the open environment with the antenna while the controller is located in a closed, protected and convenient location on the vehicle or ship. Both assemblies are electrically interfaced via cables and connectors, enabling flexible installation across a wide range of vehicle and naval platform configurations.
Defence-Grade Environmental Qualification
The positioner is qualified for outdoor operation at altitudes up to 3,500 metres, compliant with JSS 55555 Indian defence environmental standards and MIL-STD-461F for EMI/EMC. The finish is available in painting or powder coating as per customer and platform requirements, ensuring long-term corrosion resistance in the full range of ground and marine operating environments.
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It is a single-axis servo-driven pedestal that rotates an IFF radar grid antenna continuously in azimuth at controlled speed and accuracy. It delivers ±0.01° accuracy at 15 RPM with N x 360° continuous rotation for ground and marine IFF radar deployments on vehicle and ship platforms.
The positioner achieves azimuth accuracy of ±0.01° with N x 360° continuous rotation at 15 RPM, providing the precise, consistent antenna scan rotation that IFF radar operation demands.
The positioner is designed for vehicle and ship mounting, covering both ground and marine IFF radar deployment scenarios. The Servo Control Unit can be located remotely from the Servo Drive Assembly for flexible installation across different platform configurations.
The Servo Drive Assembly (SDA) is the mechanical drive unit that operates in the open environment alongside the antenna. The Servo Control Unit (SCU) is the independent controller that can be located remotely in a closed and convenient location on the platform. Both are electrically interfaced via cables and connectors.
Yes. A 2-channel co-axial rotary joint is integrated into the Servo Drive Assembly, maintaining electrical connectivity between the rotating and non-rotating segments of the system during continuous azimuth rotation without requiring an external rotary joint assembly.
The positioner complies with JSS 55555 Indian defence environmental standards and MIL-STD-461F for EMI/EMC. It is rated for outdoor operation at altitudes up to 3,500 metres.
