Overcoming Antenna Pointing Challenges with Ultra IncOder Series with our partner Celera Motion
Celera Motion our partner has addressed a significant challenge in the realm of Satcom On-The-Move with its innovative Ultra IncOder Series. A Static Synchronous Compensator is a fast-acting device capable of providing or absorbing reactive current, thereby regulating the voltage at the connection point to a power grid. It is categorised under Flexible AC Transmission Systems (FACTS) devices. This case study details the challenges faced, the solution provided by Celera Motion, and the customer benefits derived from this advanced technology.
The Challenge:
Satellite communications typically rely on ground antennas transmitting radio signals to satellites orbiting high above the Earth, which then relay the signals to various global locations. The rise in applications leveraging the low cost and high signal bandwidth of Low Earth Orbit (LEO) satellite constellations has significantly impacted the demands on antenna pointing systems. LEO satellites provide higher bandwidth due to their proximity to Earth, leading users to expect high data transfer speeds. However, the shorter visibility period of these closer satellites requires many satellites to form a constellation.
Satcom-at-sea devices, including Automated Positioning Systems (APSs) or Antenna Pointing Systems, are compact and lightweight systems mounted into Velocity Synthetic Aperture Radars (VSARs) with Very Small Aperture Terminals (VSATs) on maritime vessels. These systems, placed in wet environments, are susceptible to motion-induced antenna pointing errors and require stabilized control of the servo-driven azimuth and elevation axes.
The solution:
Celera Motion addressed these challenges with its Ultra IncOder Series, high-accuracy, inductive, rotary position encoders designed for tough conditions. Each unit is pre-calibrated to deliver sensor accuracies down to less than 19 arc seconds, with resolutions of up to 22 bits, and can be installed with modest tolerances.
Using rugged and reliable electromagnetic induction sensing principles similar to resolvers but replacing bulky coil winding with PCB conductive traces, the Ultra IncOder enables a low-profile sensor design with a large through-hole. This design allows it to be mounted in situ to meet the requirements of challenging application environments.
Customer Benefits:
The Ultra IncOder Series offers several customer benefits:
With MIL standard vibration and shock performance, the housed and potted PCB sensor is optimised for resilience against temperature changes, electromagnetic noise, and wet and dusty environments. The Ultra IncOder is perfectly suited for integration into azimuth and elevation-actuated axes using modest installation tolerances.
Specifications:
The Ultra IncOder Series boasts impressive specifications tailored for tough applications:
| Dimensions (OD) | 75 to 300 mm |
| Resolution | 22 bits |
| Accuracy | ≤19 arc-seconds |
Operating Temperature Standard Low Temperature Supply High-Temperature Supply | -45°C to +85°C -60°C to +85°C -45°C to +105°C |
| Housing | IP68 |
| Shock and Vibration | MIL-STD-810G |
Celera Motion's The Ultra IncOder Series provides a robust solution to the complex challenges of Satcom On-The-Move. By offering high precision, rugged performance, and customisable features, it addresses critical needs in harsh environments while ensuring reliable and efficient operation. This case study highlights the success of the Ultra IncOder in meeting the stringent demands of sophisticated antenna-pointing systems.
For further information or inquiries about this product, please contact us using the details provided.
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