3 • True Terrain Following Kit
The True Terrain Following (TTF) enables the drone (UAV) to accurately follow the terrain
during the flight, based on data received from the laser or radar altimeter. True Terrain
Following enables the drone to fly at low and constant AGL altitudes (up to 1 meter) without a
need to import precise Digital Elevation Model (DEM) height-map into UgCS.
Components:
• UgCS SkyHub device
• Laser altimeter: Attollo WASP-200, Lightware SF11/C, or
• Radar altimeter: Nanoradar NRA24
• Mounting kit, cables
Radar Altimeter: Nanoradar NRA24
Nanoradar NRA24 is the compact K-band radar altimeter. It adopts 24GHz-ISM frequency
band with the advantages of 2 cm measuring accuracy, small size, high sensitivity,
lightweight, and stable performance.
Figure 3.1 — Nanoradar NRA24 altimeter
Specifications
Interface
UART
Effective measurement
range
0.1 m to 30 m
Measuring accuracy
2 cm
Power input
5 V to 20 V, 1.5 W
Temperature range
−40°C to +50°C
Weight
168 g with mountings
3 • True Terrain Following Kit
UgCS SkyHub User Manual
Copyright © 2019—2021, SPH Engineering
16
Revision 5 • November 2021
