General Knowledge
      Back to home
      1. Doodle Labs Technical Library
      2. Self-Service
      3. General Knowledge

      Antenna Gain Estimation (UGV)

      Understanding Antenna Gain Requirements for Unmanned Ground Vehicles (UGV) or Other Ground Based Systems

      Example Setup for Antenna Gain Estimation (UGV)

      Likewise, utilizing the Throughput Estimation Tool we can create a simple profile for a Unmanned Ground Vehicles (UGV) utilizing  mini-OEM Mesh Rider Radio at 915-MHz, 20MHz bandwidth and we can start with the stock +3 dB gain antennas ( Doodle Labs, ANT-915-3-O, Multipolarized Antennas ) . This setup is shown in Fig. 9.

      We can further make the assumption that this UGV is to be driven in good flight conditions such that the  Fresnel Zone Clearance is the default is 60%). Furthermore, the option 'Ground level', is enabled as 'True'. The complete settings within the Throughput Estimation Tool are shown in Fig. 8 below.


      Fig. 8 Example Link Budget Setup for UGV and 915-MHz mini-OEM

       

      Example 1km Range @ 9Mbps (UGV)

      Antenna Gain Estimation

      Fig. 9  Example 1km Range @ 9Mbps (UGV)

       

      UGV and GCS Antenna Selection

      Expected Range & Throughput Performance

      • Range: 1.0 km (999.6 m)
      • Throughput at Range: 9.3 Mbps

       

      Example 1.5km Range @ 9Mbps (UGV)

      Antenna Gain Estimation

      Fig. 10  Example 1.5km Range @ 9Mbps (UGV)

       

      UGV and GCS Antenna Selection

      • UGV Antenna: Mars Antennas, MA-WA-27TB-DP8B, Antenna Link
      • UGV Antenna: Gain = +7.5 dB (Note: +7.5 dB @ 698-960 MHz, + 10 dB @ 2300-2700 MHz)
      • GCS Antenna: Doodle Labs, AANT-915-3-O, Multipolarized Antennas
      • GCS Antenna: Gain = +3 dB
      • TX + RX Antenna Gain: +10.5 dB

      Expected Range & Throughput Performance

      • Range: 1.539 km (1539.3 m)
      • Throughput at Range: 9.2 Mbps


      Example 2.5km Range @ 9Mbps (UGV)

      Antenna Gain Estimation

      Fig. 11  Example 2.5km Range @ 9Mbps (UGV)

       

      UGV and GCS Antenna Selection

      • UGV Antenna: Mars Antennas, MA-WA-27TB-DP8B, Antenna Link
      • UGV Antenna: Gain = +7.5 dB (Note: +7.5 dB @ 698-960 MHz, + 10 dB @ 2300-2700 MHz)
      • GCS Antenna: Mars Antennas, MA-WA-27TB-DP8B, Antenna Link
      • GCS Antenna: Gain = +7.5 dB
      • TX + RX Antenna Gain: +15 dB

      Expected Range & Throughput Performance

      • Range: 2.609 km (2609.1 m)
      • Throughput at Range: 9.2 Mbps

       

      Example 6-7km Range @ 9Mbps (UGV)

      Antenna Gain Estimation

      Fig. 12  Example 6-7km Range @ 9Mbps (UGV)

       

      UGV and GCS Antenna Selection

      • UGV Antenna: Mars Antennas, MA-WC90-DS13, Antenna Link
      • UGV Antenna: Gain = +13 dB
      • GCS Antenna: Mars Antennas, MA-WC90-DS13, Antenna Link
      • GCS Antenna: Gain = +13 dB
      • TX + RX Antenna Gain: +26 dB

      Expected Range & Throughput Performance

      • Range: 6.810 km (6810.2 m)
      • Throughput at Range: 8.9 Mbps