Short-range lidar measurement of top fruit tree canopies for pesticide applications research in the United Kingdom

Peter J. Walklate; G. M. Richardson; D. E. Baker; P. A. Richards; J. V. Cross

doi:10.1117/12.277609

2 July 1997 Short-range lidar measurement of top fruit tree canopies for pesticide applications research in the United Kingdom

Peter J. Walklate, G. M. Richardson, D. E. Baker, P. A. Richards, J. V. Cross

Author Affiliations +

Proceedings Volume 3059, Advances in Laser Remote Sensing for Terrestrial and Oceanographic Applications; (1997) https://doi.org/10.1117/12.277609
Event: AeroSense '97, 1997, Orlando, FL, United States

Abstract

This paper presents the measurements of dwarf and semi-dwarf Cox apple trees with a tractor-mounted LIDAR (light detecting and ranging). An analysis is presented which derives structural parameters of the canopy for use in pesticide spraying research by considering the number flux of LIDAR scans intercepted by the crop in a known spatial segment. LIDAR measurements of the crop area normalized by the horizontal projected area of the crop are compared with measurements derived from a destructive sampling method. The distributions of local crop area density and crop interception probability are also presented. Crop area density distribution can be used to estimate the deposition distribution of spray by utilizing a suitable transport and deposition model. Alternatively, crop interception probability distribution can be used as a first order estimate of the spray deposition distribution by making an analogy between light and spray transmission.

Citation Download Citation

Peter J. Walklate, G. M. Richardson, D. E. Baker, P. A. Richards, and J. V. Cross "Short-range lidar measurement of top fruit tree canopies for pesticide applications research in the United Kingdom", Proc. SPIE 3059, Advances in Laser Remote Sensing for Terrestrial and Oceanographic Applications, (2 July 1997); https://doi.org/10.1117/12.277609

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