Unmanned ISR Platforms

Extended Range, Auto-Tracking Antennas and Control Systems for Bidirectional HD 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)
  • Continuous Tracking in GPS Denied Environments
  • 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

RF Tracking in GPS Denied Environments

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

By default, Troll’s antennas utilize Dual-GPS (DGPS) and its high-capability inertial navigation systems (INS) to automatically orient, calibrate 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. In GPS denied environments Troll’s patented RF tracking software measures deviation from the antenna’s angle of peak gain to automatically steer the antenna to maximize signal strength.

Automatic Calibration and Alignment

Troll antennas are capable of auto-aligning both position and orientation without operator input. An embedded INS with Dual-GPS (DGPS) initially determines the system orientation and steers the antenna’s boresight to lock-on to a remote target. Once initialized, the system dynamically maintains this alignment automatically.

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

Troll systems utilize a high performance INS that incorporates the latest solid-state sensor technology, combining three-axis accelerometers, gyros, magnetometers, a barometric pressure sensor, dual GNSS (Global Navigation Satellite System) receivers, and a low-power micro-processor. In static and dynamic situations the INS utilizes the multiple sensor types and DGPS to determine its location and orientation in three-dimensions. By attaching this device to the antenna directly, the system continuously establishes 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.