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📊 Examples of potential applications

  • Bathymetry.

  • 3D mapping.

  • Estimation of tree height for small trees growing in trials.

📏 Range of flight height and captured zone width (m)

Operated within line of sight, observation altitudes often capped at 120 m.

🔗 Airshare website

📏 Spectral Range (nm)

c. 500 - 900 nm.

📏 Spatial Resolution (m)

UAV sensors capable of high point densities approaching 600 pts/m2 using sensors like the Minivux.

Tip

Benefits

  • Very high spatial resolution.

  • Can adjust the time of imagery capture to the needs.

  • Ability to capture data in remote, unsafe or difficult to access locations, lowering safety risks.

Note

Limitations

  • Need operator to acquire data in the field and battery life can limit survey duration.

  • A heavy lift drone and ground control points are important.

  • Specialised sensors are expensive and need for skilled operators.

  • Limited by visibility constraints and poor weather conditions.

Selection of references

📚 Hartley, R.J.L., Leonardo, E.M. Massam, P, Watt, M.S., Estarija, H.J., Wright, L., Melia, N., Pearse, G.D. (2020) An assessment of high-density UAV point clouds for the measurement of young forestry trials. Remote Sensing 12, 4039.

🔗 https://www.mdpi.com/2072-4292/12/24/4039


📚 Bandini F, Sunding TP, Linde J, Smith O, Jensen IK, Köppl CJ, Butts M, Bauer-Gottwein P. 2020. Unmanned Aerial System (UAS) observations of water surface elevation in a small stream: Comparison of radar altimetry, LIDAR and photogrammetry techniques. Remote Sensing of Environment. 237:111487. doi:https://doi.org/10.1016/j.rse.2019.111487.

🔗 https://www.sciencedirect.com/science/article/pii/S0034425719305061