Unmanned ISR Platforms

Auto-Tracking Antennas and C2 Systems for Extended Range Full Motion Video and Data

Data Link Experts

SkykLink MiniII dual-polarized or dual-band airborne tracking antenna

Troll Systems manufactures air-to-ground data links and data terminals suitable for high-performance manned or unmanned aircraft. Our equipment provides continuous broadband connectivity between airborne and terrestrial platforms over long distances. These secure Ethernet or serial data links connect ISR sensor payloads, video, data and telemetry to command and control networks on the ground.  

Troll Systems Enable:

  • Long-Range (over 200km)
  • Automatic Asset Acquisition
  • High Data Rates
  • Intelligence and Automation
  • Fast and Simple Set-up
  • Highly Configurable and Scalable
  • Multi-Band or Multi-Waveform
  • High Precision and Accuracy
  • Efficient Network-Aware Common User Interface consistent across product-line
  • Ethernet and Serial Interfaces
  • ITAR Free

Auto-Acquisition and RF Tracking

Precision INS/DGPS subsystem determines the system orientation and then directly steers the boresight to the desired target

By default, Troll’s antennas use Dual-GPS (DGPS) and a high-capability inertial navigation system (INS) to automatically orient, calibrate, acquire and track assets. Unlike most tracking antennas, Troll’s ground data terminals are capable of auto-aligning the position and orientation of the antenna's boresight without operator input. 

Automatic Calibration and Alignment

To determine alignment and orientation MT-300 and MTX antennas rely on the INS, Dual-GPS (DGPS). Once initialized these systems are designed to dynamically maintain tracking alignment in real-time.

Precision INS/DGPS subsystem determines the system orientation and then directly steers the boresight to the desired target 

To ensure pointing accuracy, MT and MTX antennas depend on the latest solid-state INS sensor technology. Three-axis accelerometers, gyros, magnetometers, a barometric pressure sensor, dual GNSS receivers, a low-power micro-processor and dual-GPS combine to determine location and orientation in three-dimensions. By attaching this device directly to the antenna in both static and dynamic situations the system can continuously establish the orientation of the antennas boresight in real-time. This eliminates errors caused by the mechanical gear train or mechanical flexure as they are normalized out of the feedback loop while tracking.

Ultra-High-Gain Quad-Band-Tracking-Antenna-with-Dual-GPS_INS

Auto-Boresight Alignment

Although the mechanical alignment of the INS is factory set, small mechanical changes can occur over time. The INS has an RMS (root mean square) error window of ± 0.15° which falls within the narrowest 3dB beam-width of our antennas.

To maximize the accuracy in all conditions however, Troll uses an “auto-boresight” alignment routine to keep the INS and the RF boresight in precise parallel alignment. This is accomplished by periodically “peaking” the signal using the RSSI information from the RFE/modem. When this function is activated (either automatically or by user input) the antenna will recalibrate an offset to the INS data while monitoring the RSSI level. Once the peak is found, the offset is maintained, resulting in a properly calibrated boresight to INS alignment. Periodically repeating the process corrects INS drift on an ongoing basis and compensates for minor common alignment errors in real-time.

Rapid and Reliable Link Availability

MT-300 Assembly in less than 10 minutes

Troll’s Mobile Tracking Antenna MT-300 is designed for extremely quick-deployment and portable operation. Set-up time is less than ten minutes with a two-man crew and time from antenna/modem “power-on” to tracking a remote target is also under ten minutes. Calibration and orientation are automatic making it possible to establish a +100nm bidirectional data link in nothing flat.